This Physics Trivia Will Pull You In With Gravity
1.
Who developed the Second Law of Motion that is described by the equation F=ma?
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Answer:
Isaac Newton
Explanation:
Isaac Newton developed the Second Law of Motion, which is described by the equation F=ma. This law states that the force acting on an object is equal to the mass of the object multiplied by its acceleration. By formulating this equation, Newton was able to provide a mathematical explanation for the relationship between force, mass, and acceleration in an object's motion.
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2.
Momentum is to force as angular momentum is to what?
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Answer:
Torque
Explanation:
Angular momentum is a quantity that describes the rotational motion of an object, similar to how momentum describes the linear motion of an object. Torque, on the other hand, is the rotational equivalent of force - it is the measure of the rotational force applied to an object. Therefore, just as momentum is related to force in linear motion, angular momentum is related to torque in rotational motion.
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3.
In a circuit, what is the ratio of the voltage drop and current flow between two points?
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Answer:
Resistance
Explanation:
Resistance is the property of a material that determines how much it resists the flow of electric current. It is defined as the ratio of voltage drop across a component to the current flowing through it. The higher the resistance, the more voltage is required to maintain a certain level of current flow. Therefore, in a circuit, the ratio of voltage drop and current flow between two points is known as resistance.
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4.
If you throw a ball in the air, what curve does it trace out?
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Answer:
Parabola
Explanation:
As the ball is thrown upwards, gravity acts as a constant force pulling it back down towards the ground. This results in the ball following a curved path known as a parabola. The shape of a parabola is determined by the ball's initial velocity, angle of projection, and gravitational force acting upon it. This curve is a common trajectory for objects experiencing projectile motion in a gravitational field.
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5.
What kind of electromagnetic radiation arises only from nuclear excitations?
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Answer:
Gamma Rays
Explanation:
Gamma rays are a form of electromagnetic radiation that arises only from nuclear excitations. They are the most energetic form of electromagnetic radiation and are produced by the decay of radioactive atoms and during nuclear reactions. Gamma rays have the shortest wavelengths and highest frequencies in the electromagnetic spectrum, making them ideal for studying the nucleus of an atom and its interactions.
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6.
According to Ohm's Law, what would the resistance be in a circuit with 40 volts and 8 amps?
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Answer:
5 Ohms
Explanation:
Ohm's Law states that resistance (R) is equal to voltage (V) divided by current (I). In this case, the voltage is 40 volts and the current is 8 amps. By dividing 40 volts by 8 amps, we get a resistance of 5 Ohms.
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7.
What is the Doppler effect?
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Answer:
The Observed Change In Frequency Of A Moving Object
Explanation:
The Doppler effect refers to the change in frequency of a wave (such as sound or light) as it is emitted or received by a moving object. This change in frequency occurs because the motion of the object causes the wave to either compress or stretch, resulting in a shift in the perceived frequency. This phenomenon is commonly experienced in everyday situations, such as the change in pitch of a siren as a police car approaches and then moves away.
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8.
In math, "pi" is equal to?
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Answer:
3.141592654
Explanation:
Pi is a mathematical constant representing the ratio of a circle's circumference to its diameter. It is an irrational number that is approximately equal to 3.141592654. This value of pi is commonly used in mathematical calculations and formulas involving circles and curves.
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9.
What is the closest value of pi?
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Answer:
3.14
Explanation:
The value of pi is commonly approximated as 3.14. While pi is an irrational number with an infinite number of decimal places, 3.14 is a commonly used approximation that is close to the actual value of pi.
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10.
What is energy of motion called?
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Answer:
Kinetic Energy
Explanation:
Kinetic energy is the energy possessed by an object due to its motion. When an object is in motion, it has the ability to do work and cause change. Kinetic energy is dependent on the mass and velocity of the object, with faster and heavier objects having more kinetic energy. This form of energy is crucial in understanding the behavior of moving objects and is an important concept in physics.
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11.
Which scientific term means "measure of resistance to flow in a liquid"?
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Answer:
Viscosity
Explanation:
Viscosity is the scientific term that refers to the measure of resistance to flow in a liquid. It is a property that determines how easily a liquid can flow, with higher viscosity indicating a thicker or more resistant liquid. This term is commonly used in various fields such as physics, chemistry, and engineering to describe the behavior of fluids.
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12.
Which scientific term means "curved inwards"?
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Answer:
Concave
Explanation:
Concave is the scientific term that means "curved inwards". This term is used to describe a surface or shape that curves inward like the inside of a bowl or a cave. In optics, concave is often used to refer to a lens or mirror that curves inward, causing light rays to converge.
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13.
Which scientific term is defined as a physical particle with a negative charge?
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Answer:
Electron
Explanation:
An electron is a subatomic particle that carries a negative charge and orbits the nucleus of an atom. It plays a crucial role in various physical and chemical processes, including electricity, magnetism, and bonding between atoms.
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14.
What is the term for the capacity of a body or system to do work?
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Answer:
Energy
Explanation:
Energy is the term used to describe the capacity of a body or system to do work. It is a fundamental concept in physics that allows us to quantify the ability of an object to exert force and cause motion. Energy can exist in various forms such as kinetic, potential, thermal, and chemical, and it can be transferred or transformed from one form to another. By understanding and harnessing energy, we are able to explain and predict a wide range of physical phenomena in the universe.
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15.
Which scientific term is best defined as "a measure of frequency"?
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Answer:
Hertz (Hz)
Explanation:
Hertz (Hz) is the scientific term that is best defined as "a measure of frequency" because it specifically refers to the unit of frequency in the International System of Units (SI). Hertz is used to quantify the number of cycles or vibrations per second in a wave or oscillation, making it a direct measure of frequency.
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16.
Which scientific term is best defined as an electrically charged atom?
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Answer:
Ion
Explanation:
An ion is best defined as an electrically charged atom because it has gained or lost electrons, resulting in a positive or negative charge. This charge imbalance causes ions to be attracted to other charged particles, allowing them to participate in chemical reactions and conduct electricity.
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17.
What is a space which is entirely devoid of matter called in science terms?
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Answer:
Vacuum
Explanation:
A space which is entirely devoid of matter is called a vacuum in science terms. In a vacuum, there is no air or any other substance present, creating an environment with extremely low pressure. This absence of matter allows for unique scientific experiments and observations to be conducted, as well as serving practical purposes in various industries such as space exploration and semiconductor manufacturing.
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18.
What is the distance between two peaks of a wave called?
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Answer:
Wavelength
Explanation:
The distance between two peaks of a wave is called wavelength. Wavelength is a measure of the length of one complete cycle of a wave, from one peak to the next peak. It is an important characteristic of a wave and is often used to describe the properties of different types of waves, such as light waves, sound waves, and water waves.
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19.
What is the rate at which something moves called?
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Answer:
Speed
Explanation:
The rate at which something moves is called speed. Speed is a measure of how quickly an object covers a distance in a certain amount of time. It is a scalar quantity that does not take into account the direction of motion, only the magnitude of the movement. Speed is an important concept in physics and is used to describe how fast an object is traveling in a given direction.
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20.
A unit of electromotive force is called what?
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Answer:
Volt
Explanation:
An electromotive force is a measure of the energy per unit charge that is available to move electrons through a circuit. The unit used to measure electromotive force is called a volt, named after the Italian physicist Alessandro Volta who invented the voltaic pile, the first chemical battery. The volt is commonly used in electrical engineering to quantify the potential difference between two points in a circuit.
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21.
What unit of measurement is one-thousandth of a gram?
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Answer:
Milligram
Explanation:
A milligram is the correct unit of measurement that is equivalent to one-thousandth of a gram. This is because the prefix "milli-" signifies one thousandth in the metric system, making a milligram the appropriate measurement for a fraction of a gram.
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22.
What is water in its solid form called?
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Answer:
Ice
Explanation:
Water in its solid form is called ice. When water is cooled below its freezing point, the molecules slow down and come together to form a solid structure with a specific crystalline pattern. This solid form of water is commonly known as ice, which is commonly found in glaciers, icebergs, and ice cubes.
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23.
A unit for measuring pressure is also known as what?
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Answer:
Pounds Per Square Inch (Psi)
Explanation:
Pressure is typically measured in Pounds Per Square Inch (Psi), which is a unit that quantifies the amount of force exerted on a specific area. This unit is commonly used in various industries such as engineering, physics, and meteorology to describe the intensity of pressure.
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24.
What is the irregular and instantaneous motion of air called?
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Answer:
Turbulence
Explanation:
Turbulence refers to the irregular and instantaneous motion of air. This phenomenon is characterized by chaotic and unpredictable airflow patterns, often causing disturbances in the atmosphere. Turbulence can be experienced during flights, in weather systems, or in fluid dynamics, where it plays a significant role in various natural processes.
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25.
What does splitting a laser light into two beams through a silver mirror make?
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Answer:
Hologram
Explanation:
Splitting a laser light into two beams through a silver mirror creates a hologram. Holograms are three-dimensional images produced by the interference of light beams. By splitting the laser light and redirecting it through a silver mirror, the beams can create a holographic image with depth and dimensionality.
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26.
Which term describes flying at six times the speed of sound?
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Answer:
Mach 6
Explanation:
Flying at six times the speed of sound is referred to as "Mach 6" because the term "Mach" is used to denote the speed of an object relative to the speed of sound in the surrounding medium. In this case, Mach 6 means flying at a speed six times faster than the speed of sound, which is a significant velocity that is typically achieved by advanced supersonic aircraft or missiles.
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27.
Which abbreviation refers to a term that literally means "below red"?
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Answer:
IR
Explanation:
The abbreviation IR refers to the term "infrared", which literally means "below red" in reference to the position of infrared light on the electromagnetic spectrum.
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28.
The four engines of a Boeing 747 jet produce 188,000 pounds (85,275 kilograms) of what?
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Answer:
Thrust
Explanation:
The four engines of a Boeing 747 jet produce 188,000 pounds (85,275 kilograms) of thrust, which is the force that propels the aircraft forward through the air. Thrust is generated by the engines as they expel high-speed exhaust gases in the opposite direction to the desired motion of the aircraft, creating a forward propulsion force.
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29.
Which form of energy can we see with the naked eye?
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Answer:
Light
Explanation:
Light is the form of energy that is visible to the naked eye. It is electromagnetic radiation within a certain portion of the electromagnetic spectrum that stimulates the sense of vision. Light is essential for vision and allows us to see colors, shapes, and objects in our environment. Our eyes are sensitive to this form of energy, enabling us to perceive the world around us.
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30.
What is the scientific word for push or pull?
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Answer:
Force
Explanation:
Force is the scientific term used to describe a push or pull. In physics, force is defined as any interaction that, when unopposed, will change the motion of an object. This term encompasses both pushes and pulls, making it the correct scientific word to describe both types of interactions.
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31.
What are the ends of a bar magnet called?
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Answer:
Poles
Explanation:
The ends of a bar magnet are called poles because they are the points where the magnetic field lines converge or diverge. The poles of a magnet are where the magnetic force is strongest, and they are typically labeled as the north pole and south pole based on their magnetic orientation.
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32.
What force slows down a rolling ball?
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Answer:
Friction
Explanation:
Friction is the force that opposes the motion of the rolling ball by acting in the opposite direction to its movement. As the ball rolls, it comes into contact with the surface it is rolling on, causing friction to occur. This frictional force converts some of the kinetic energy of the ball into heat, slowing down the ball's motion.
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33.
How fast does light travel in one second?
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Answer:
186,000 Miles Per Second
Explanation:
Light travels at a speed of 186,000 miles per second, which is approximately 300,000 kilometers per second. This speed is constant in a vacuum and is considered the fastest speed at which anything can travel in the universe according to the theory of relativity.
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34.
What is the main form of energy produced by a laser?
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Answer:
Light
Explanation:
The main form of energy produced by a laser is light. Lasers work by emitting a concentrated beam of light through a process called stimulated emission. This light energy is coherent, meaning it is all in phase and travels in a tightly focused beam. The intense light produced by lasers can have various applications in industries, medicine, communications, and many other fields.
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35.
What is a storage device for electricity called?
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Answer:
Cell
Explanation:
A storage device for electricity is called a cell, which refers to a single unit that can store electrical energy. Cells are commonly used in batteries to store and release electricity as needed.
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36.
What would you do to a bucket of sand and water to separate one from the other?
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Answer:
Filtration
Explanation:
To separate sand and water, you would pour the mixture into a filter or sieve. The water would pass through the filter, leaving the sand behind. This process is known as filtration, where a physical barrier is used to separate substances based on their particle size. In this case, the smaller water particles pass through while the larger sand particles are retained.
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37.
What form of energy are we using when we use an alarm clock or a dishwasher?
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Answer:
Electricity
Explanation:
When we use an alarm clock or a dishwasher, we are utilizing electricity as the form of energy. Electricity is a versatile form of energy that powers many of the devices and appliances we use in our daily lives. It is generated through various means such as fossil fuels, nuclear power, or renewable sources like solar and wind energy. In the case of alarm clocks and dishwashers, electricity is converted into mechanical energy to perform specific functions, such as sounding an alarm or washing dishes.
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38.
What sort of electricity do you get when you rub two balloons and they stick together?
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Answer:
Static
Explanation:
Rubbing two balloons together creates static electricity, which is a build-up of electric charge on the surface of an object. When the balloons stick together, it is because the static charge on each balloon causes them to be attracted to each other. This phenomenon is due to the transfer of electrons between the two balloons, creating an imbalance of positive and negative charges that results in the static electricity that causes them to stick together.
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39.
What is the word for getting rid of electrical charge by transferring it?
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Answer:
Grounding
Explanation:
Grounding is the process of getting rid of electrical charge by transferring it to the ground. This is done to prevent the build-up of excess charge and to ensure the safety of electrical systems and equipment. By connecting electrical devices to the ground, any excess charge can be safely dissipated, reducing the risk of electrical shocks or damage to the equipment.
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40.
What word means a loss of electrical power?
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Answer:
Blackout
Explanation:
A blackout refers to a loss of electrical power, typically affecting a specific area or building due to various reasons such as equipment failure, severe weather, or maintenance issues. During a blackout, there is a complete interruption of electricity supply, resulting in darkness and the inability to use electrical devices until power is restored.
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41.
What type of material is rubber, in terms of electrical flow?
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Answer:
Insulator
Explanation:
Rubber is considered an insulator in terms of electrical flow because it does not conduct electricity well. Insulators have high resistance to the flow of electrical current, preventing the flow of electrons. Rubber is commonly used in electrical insulation to protect against electrical shocks and short circuits.
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42.
What material gets hot when electricity flows through it and resists the flow?
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Answer:
Resistors
Explanation:
Resistors are designed to resist the flow of electricity, which causes them to heat up when electricity flows through them. This property allows resistors to regulate the flow of current in a circuit by converting electrical energy into heat. By controlling the amount of resistance in a circuit, resistors play a crucial role in various electronic devices and systems.
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43.
What simple line drawings do people use to represent the electric flow?
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Answer:
Circuit Diagrams
Explanation:
Circuit diagrams are simple line drawings that people use to represent the flow of electricity in a circuit. These diagrams use standardized symbols to represent different components such as resistors, capacitors, and wires, making it easier for engineers and electricians to understand and analyze the circuit's design and functionality. By using circuit diagrams, individuals can easily visualize the connections between various electrical components and troubleshoot any issues that may arise.
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44.
What piece of material attracts iron and some other metals?
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Answer:
Magnet
Explanation:
A magnet is a piece of material that possesses magnetic properties, which allows it to attract iron and some other metals. This attraction is due to the alignment of magnetic domains within the material, creating a magnetic field that pulls certain metals towards it. This property makes magnets useful in various applications, such as in compasses, generators, and magnetic storage devices.
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45.
What is the device that makes alternating current called?
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Answer:
Generator
Explanation:
A device that produces alternating current is called a generator. Generators work by converting mechanical energy into electrical energy through the process of electromagnetic induction. As the generator spins, it produces a changing magnetic field that induces an alternating current in the wires of the generator. This alternating current can then be used to power electrical devices and systems.
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46.
What device is made of several cells connected in series?
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Answer:
Battery
Explanation:
Batteries are made up of several cells connected in series to increase the overall voltage output. Each cell contributes a certain amount of voltage, and when connected in series, the voltages add up to create a higher total voltage. This allows batteries to power devices that require higher voltage levels than a single cell can provide.
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47.
What do we call the machine that helps control the heart muscle's regularity?
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Answer:
Pacemaker
Explanation:
A pacemaker is a medical device that helps control the heart muscle's regularity by sending electrical impulses to regulate the heartbeat. It is commonly used to treat irregular heart rhythms and ensure that the heart beats at a steady and healthy pace. The pacemaker monitors the heart's electrical activity and delivers necessary signals to keep the heart beating properly.
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48.
What is the potential energy in the nucleus of an atom called?
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Answer:
Nuclear Energy
Explanation:
The potential energy in the nucleus of an atom is called nuclear energy because it is the energy that holds the nucleus together through the strong nuclear force. This energy is released in nuclear reactions such as fission or fusion, where the nucleus either splits apart or combines with another nucleus, resulting in a release of a large amount of energy in the form of radiation.
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49.
What is the rapid back-and-forth movement that can cause sound called?
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Answer:
Vibration
Explanation:
Vibration is the rapid back-and-forth movement that can cause sound. When an object vibrates, it creates sound waves that travel through a medium, such as air or water, and are perceived by our ears as sound. This movement is what allows us to hear various sounds in our environment.
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50.
What was the first sound-recording device called?
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Answer:
Phonograph
Explanation:
The first sound-recording device was called a phonograph, which was invented by Thomas Edison in 1877. It was a groundbreaking invention that allowed sound to be recorded and played back for the first time in history. The phonograph revolutionized the music industry and paved the way for future advancements in audio technology.
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51.
What is the perception of frequency called?
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Answer:
Pitch
Explanation:
Pitch refers to the perception of frequency, specifically in terms of sound. It is how high or low a sound is perceived to be, and is closely related to the frequency of the sound wave. Different frequencies are perceived as different pitches, with higher frequencies being perceived as higher pitches and lower frequencies as lower pitches. Therefore, the perception of frequency is called pitch.
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52.
What piece of polished, cut glass can we use to see the spectrum of visible light?
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Answer:
Prism
Explanation:
A prism is a piece of polished, cut glass that can be used to see the spectrum of visible light by refracting and dispersing the light into its different colors. The angles of the prism cause the light to bend at different angles, separating the colors and creating a rainbow effect.
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53.
What are solid particles that produce color by absorbing or reflecting light called?
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Answer:
Pigments
Explanation:
Pigments are solid particles that produce color by absorbing certain wavelengths of light and reflecting others. They are commonly used in various applications such as paints, inks, cosmetics, and dyes to add color to the product. Pigments can be natural or synthetic substances that provide a wide range of colors and shades based on their chemical composition and structure.
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54.
What two factors do you need to determine the average speed of an object?
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Answer:
Distance And Time
Explanation:
To determine the average speed of an object, you need to consider both the distance traveled by the object and the time it took to cover that distance. Average speed is calculated by dividing the total distance traveled by the total time taken to travel that distance. By knowing both the distance and time, you can accurately calculate the average speed of the object.
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55.
What type of scientist studies changes and interactions with matter including time and light?
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Answer:
Physicist
Explanation:
A physicist is a scientist who studies changes and interactions with matter, including time and light. Physicists explore the fundamental principles governing the behavior of the universe, such as the laws of motion, electromagnetism, and quantum mechanics. They conduct experiments, analyze data, and develop theories to explain the physical phenomena observed in the natural world. By studying the properties of matter and energy, physicists seek to understand the underlying mechanisms that govern the universe.
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56.
What describes both direction and how fast something is going?
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Answer:
Velocity
Explanation:
Velocity is a physical quantity that describes both the direction and speed of an object's motion. It is a vector quantity, meaning it has both magnitude (speed) and direction. Therefore, velocity is the correct answer as it encompasses both aspects of how fast something is going and in what direction it is moving.
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57.
Which speed type does an object move in the same distance in each second traveled?
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Answer:
Constant
Explanation:
An object moves at a constant speed when it covers the same distance in each second traveled. This means that the object's velocity remains unchanged throughout its motion, resulting in a consistent rate of movement. In other words, the object does not speed up or slow down but maintains a steady pace, making its speed type constant.
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58.
What is the rate of change of an object's velocity called?
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Answer:
Acceleration
Explanation:
Acceleration is the rate of change of an object's velocity over time. It measures how quickly the velocity of an object is changing, either increasing or decreasing. When an object speeds up, slows down, or changes direction, it is experiencing acceleration. This term is commonly used in physics to describe the change in motion of an object.
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59.
Which force opposes motion between two objects?
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Answer:
Friction
Explanation:
Friction is the force that opposes motion between two objects. It occurs when two surfaces are in contact with each other and one object tries to slide or move over the other. Friction is caused by irregularities in the surfaces of the objects rubbing against each other, creating resistance and making it difficult for the objects to move smoothly past each other.
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60.
What instrument do scientists often use to measure the amount of force?
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Answer:
Spring Scale
Explanation:
Scientists often use spring scales to measure the amount of force because spring scales are specifically designed to measure force by utilizing the principle of Hooke's Law. When force is applied to the spring scale, it stretches or compresses the spring, allowing for the measurement of the force applied. This makes spring scales an ideal instrument for accurately measuring force in various scientific experiments and applications.
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61.
What do car makers use to test air resistance in new car models?
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Answer:
Wind Tunnel
Explanation:
Car makers use wind tunnels to test air resistance in new car models because wind tunnels allow them to simulate different wind speeds and directions, helping them understand how aerodynamic the car is and make necessary adjustments to improve its efficiency and performance on the road. Wind tunnels provide a controlled environment for car makers to accurately measure drag and lift forces on the vehicle, ensuring that the design is optimized for maximum fuel efficiency and stability.
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62.
What forces are equal in size but opposing?
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Answer:
Balanced Forces
Explanation:
Balanced forces are equal in size but opposing in direction. When two forces of equal magnitude act in opposite directions on an object, they cancel each other out, resulting in a state of equilibrium. This means that the object will not accelerate in any direction and will remain stationary or continue moving at a constant velocity.
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63.
What is a body's resistance to changes in motion or speed called?
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Answer:
Inertia
Explanation:
Inertia is a property of matter that causes an object to resist changes in its state of motion. This resistance is due to the object's mass, which determines how difficult it is to change its velocity. Inertia is the reason why objects tend to stay at rest or in motion unless acted upon by an external force.
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64.
What kind of energy is the energy of the motion of an avalanche?
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Answer:
Kinetic Energy
Explanation:
The energy of the motion of an avalanche is classified as kinetic energy because it is the energy an object possesses due to its motion. In the case of an avalanche, the moving mass of snow has kinetic energy as it travels down a slope, gaining speed and momentum. This energy is a result of the motion of the avalanche and can cause significant destruction and impact when it comes into contact with obstacles in its path.
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65.
What is the product of an object's velocity and mass called?
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Answer:
Momentum
Explanation:
Momentum is the product of an object's velocity and mass. Momentum is a vector quantity that describes the motion of an object and is calculated by multiplying the object's mass by its velocity. It represents how difficult it is to stop or change the direction of an object's motion.
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66.
What does acceleration depend on according to Newton's Second Law of Motion?
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Answer:
Mass Of Object
Explanation:
According to Newton's Second Law of Motion, acceleration depends on the mass of the object. This is because the acceleration of an object is directly proportional to the force acting on it, and inversely proportional to its mass. Therefore, the greater the mass of an object, the more force is required to accelerate it at the same rate as a lighter object.
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67.
What is the measure of how elements slow down the effect of a current?
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Answer:
Resistance
Explanation:
Resistance is the measure of how much a material or component impedes the flow of electric current. It is caused by collisions between electrons and atoms in a conductor, resulting in the conversion of electrical energy into heat. The higher the resistance, the more difficult it is for current to flow through a circuit. Therefore, resistance can be seen as a measure of how elements slow down the effect of a current.
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68.
What unit is resistance measured in?
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Answer:
Ohm
Explanation:
Resistance is a measure of how much a material opposes the flow of electrical current. The unit for resistance is the ohm, symbolized by the Greek letter omega (Ω). Ohm is named after the German physicist Georg Simon Ohm, who first defined the relationship between voltage, current, and resistance in electrical circuits.
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69.
What type of material allows electrons to flow freely?
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Answer:
Conductor
Explanation:
Conductors are materials that allow electrons to flow freely due to their loosely bound electrons that are able to move easily through the material. This is in contrast to insulators, which do not allow the flow of electrons. Conductors are often used in electrical wiring and circuits due to their ability to conduct electricity effectively.
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70.
What material resists electron flow?
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Answer:
Insulator
Explanation:
Insulators are materials that have high resistance to the flow of electrons, making it difficult for electric current to pass through them. This is due to the tightly bound electrons in insulators, which do not move easily in response to an applied electric field. As a result, insulators are used to prevent the flow of electricity and are commonly found in electrical insulation, such as in wires and cables, to ensure safety and prevent short circuits.
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71.
What are circuits with more than one pathway for electrons called?
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Answer:
Parallel Circuits
Explanation:
Circuits with more than one pathway for electrons are called parallel circuits because the components are connected in a way that allows multiple paths for the flow of current. In a parallel circuit, each component has its own separate branch that connects back to the power source, providing an alternative route for the electrons to travel. This allows for different components to operate independently of each other, unlike in series circuits where the components are connected in a single path.
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72.
What type of switch allows you to reset the circuit?
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Answer:
Circuit Breaker
Explanation:
A circuit breaker is a type of switch that is designed to automatically interrupt electrical flow in a circuit when it detects an overload or short circuit. By tripping the circuit, it effectively resets the circuit by cutting off the flow of electricity, preventing damage to the circuit and potential hazards such as fires. This feature makes circuit breakers essential for safely managing electrical systems and protecting against electrical accidents.
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73.
What exists around a magnet?
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Answer:
Magnetic Field
Explanation:
A magnetic field is the region around a magnet where magnetic forces are exerted. It is an invisible force that is responsible for the attraction or repulsion of magnetic materials. The strength of the magnetic field is strongest close to the magnet and decreases as you move further away. This field is what allows magnets to interact with each other and with other magnetic materials.
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74.
What kind of waves are formed when you send electricity through a magnet?
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Answer:
Electromagnet
Explanation:
When electricity is sent through a magnet, it creates electromagnetic waves. This is because the flow of electric current creates a magnetic field around the conductor, resulting in electromagnetic radiation being emitted. The interaction between electricity and magnetism produces these waves, which can be used in various applications such as communication, medical imaging, and power generation.
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75.
What is the energy of moving parts called?
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Answer:
Mechanical Energy
Explanation:
Mechanical energy refers to the energy possessed by an object due to its motion or position. When an object's parts are in motion, they possess mechanical energy which can be in the form of kinetic energy (energy of motion) or potential energy (energy of position). This energy can be transferred or transformed into different forms but remains constant in a closed system, following the law of conservation of energy.
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76.
If you're talking about electricity, what does "DC" stand for?
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Answer:
Direct Current
Explanation:
Direct Current (DC) is a type of electrical current that flows in one direction consistently. This is in contrast to Alternating Current (AC), which changes direction periodically. DC is commonly used in batteries and electronic devices where a steady and constant flow of electricity is required.
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77.
What physical quantity is always conserved in mechanical collisions?
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Answer:
Momentum
Explanation:
In mechanical collisions, momentum is always conserved because there is no external force acting on the system. According to the law of conservation of momentum, the total momentum of a closed system before a collision is equal to the total momentum after the collision. This means that the total momentum remains constant throughout the collision, regardless of any internal forces or interactions between the objects involved.
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78.
What are the units of torque?
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Answer:
Newton-Meters
Explanation:
Torque is a measure of the force that can cause an object to rotate around an axis. It is calculated by multiplying the force applied by the distance from the axis of rotation. The units of torque are Newton-Meters, which represents the amount of force needed to rotate an object around an axis at a certain distance.
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79.
What does Hooke's Law describe?
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Answer:
Force Exerted By A Stretched Spring
Explanation:
Hooke's Law describes the relationship between the force exerted on a spring and the amount the spring is stretched or compressed. It states that the force exerted by a spring is directly proportional to the displacement of the spring from its equilibrium position. This means that the more a spring is stretched or compressed, the greater the force it exerts.
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80.
What does the "m" stand for in maser, the predecessor of the laser?
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Answer:
Microwave
Explanation:
The "m" in maser stands for microwave because a maser is a device that produces coherent electromagnetic waves in the microwave range. The term "maser" actually stands for "microwave amplification by stimulated emission of radiation", highlighting its use in generating and amplifying microwave signals. This distinction from lasers, which operate in the optical range, is important in understanding the origins and applications of masers in various scientific and technological fields.
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81.
The Bernoulli Effect concerns what physical system?
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Answer:
A Moving Fluid
Explanation:
The Bernoulli Effect concerns a moving fluid, specifically the relationship between the pressure and velocity of the fluid as it flows through a conduit. This principle states that as the velocity of the fluid increases, the pressure decreases, and vice versa. This phenomenon is commonly observed in various applications such as airplane wings, carburetors, and even in everyday occurrences like blowing air over a piece of paper to make it rise.
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82.
Masses are to Newton's Gravitational Law as charges are to what?
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Answer:
Coulomb's Law
Explanation:
In Newton's Gravitational Law, masses are the fundamental quantities that interact with each other through gravitational force. Similarly, in Coulomb's Law, charges are the fundamental quantities that interact with each other through electrostatic force. Just as masses determine the strength of gravitational attraction between objects, charges determine the strength of electrostatic attraction or repulsion between objects. Coulomb's Law describes the relationship between the charges of two objects and the force between them, analogous to how Newton's Gravitational Law describes the relationship between the masses of two objects and the force between them.
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83.
What does the word "quantum" mean?
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Answer:
Portion
Explanation:
The word "quantum" does not mean "portion." Instead, "quantum" refers to a discrete amount or unit in physics, particularly in the context of quantum mechanics where particles and energy exist in discrete, quantized states. This term is used to describe the smallest possible discrete unit of any physical property, such as energy or matter.
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84.
How many quarks are in an electron?
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Answer:
None
Explanation:
Quarks are subatomic particles that make up protons and neutrons, not electrons. Electrons are fundamental particles that belong to a different category known as leptons. Quarks and leptons are two different types of particles in the Standard Model of particle physics. Therefore, there are no quarks present in an electron.
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85.
What word describes a material which maintains a magnetic field after an external field is removed?
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Answer:
Ferromagnetic
Explanation:
Ferromagnetic materials are able to retain a magnetic field even after an external magnetic field is removed due to the alignment of magnetic moments within the material. This property allows ferromagnetic materials to be used in a variety of applications such as in the production of permanent magnets and magnetic storage devices.
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86.
What physical constant did Henry Cavendish first determine using two weights and a cantilever?
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Answer:
Gravitational Constant
Explanation:
Henry Cavendish first determined the Gravitational Constant using two weights and a cantilever. By measuring the gravitational force between the two weights and the deflection of the cantilever, Cavendish was able to calculate the value of the Gravitational Constant, which represents the strength of the gravitational force between two objects. This experiment was groundbreaking in the field of physics and played a significant role in understanding the fundamental forces of nature.
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87.
What Scottish physicist's name adorns both a set of electromagnetic equations, and the distribution of velocities within a gas at equilibrium?
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Answer:
James Clerk Maxwell
Explanation:
James Clerk Maxwell is the correct answer because he is the Scottish physicist who formulated the set of electromagnetic equations known as Maxwell's equations. Additionally, Maxwell also derived the Maxwell-Boltzmann distribution, which describes the distribution of velocities of particles within a gas at equilibrium. His groundbreaking work in both electromagnetism and statistical mechanics solidified his place as one of the greatest physicists in history.
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88.
What measure is used to express reactance in conductors and capacitors?
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Answer:
Ohms
Explanation:
Reactance in conductors and capacitors is measured in ohms because reactance is a property that resists the flow of alternating current in a circuit, similar to resistance in direct current circuits. Ohms is the unit of measurement for resistance, and reactance is essentially a type of resistance that varies with frequency in AC circuits. Therefore, ohms is used to express reactance in conductors and capacitors.
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89.
What form of spectroscopy is concerned with the strength of the magnetic field surrounding atoms?
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Answer:
NMR
Explanation:
NMR spectroscopy is concerned with the strength of the magnetic field surrounding atoms because it relies on the behavior of atomic nuclei in a magnetic field. By applying a strong magnetic field, NMR can detect the magnetic properties of atomic nuclei, providing valuable information about the molecular structure and composition of a sample. This technique is widely used in chemistry, biochemistry, and medicine for analyzing compounds and studying molecular interactions.
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90.
How much would a 150-pound person weigh at the center of the earth?
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Answer:
Nothing
Explanation:
At the center of the earth, the gravitational pull from all directions cancels out, resulting in weightlessness. Therefore, a 150-pound person would weigh nothing at the center of the earth.
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91.
What is the force of gravity on the moon compared to that of the Earth?
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Answer:
1/6 That Of The Earth
Explanation:
The force of gravity on the moon is 1/6 that of the Earth because the moon has less mass than the Earth. Gravity is directly proportional to the mass of an object, so the smaller mass of the moon results in a weaker gravitational pull compared to Earth. This is why objects weigh less on the moon than they do on Earth.
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92.
Who discovered the neutron and in what year?
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Answer:
James Chadwick In 1932
Explanation:
James Chadwick discovered the neutron in 1932. Neutrons are subatomic particles found in the nucleus of an atom, with no electrical charge. Chadwick's discovery of the neutron was a significant contribution to the field of nuclear physics, as it helped to further our understanding of atomic structure and the behavior of particles within the nucleus.
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93.
What is a Beta particle?
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Answer:
Electron
Explanation:
A beta particle is a high-energy electron that is emitted from the nucleus of an atom during radioactive decay. This electron carries away excess energy from the nucleus, helping to stabilize the atom. Beta particles can travel at high speeds and have the ability to penetrate materials, making them useful in various scientific and medical applications.
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94.
What physical laws states that no two particles may occupy the same quantum state simultaneously?
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Answer:
The Pauli Exclusion Principle
Explanation:
The Pauli Exclusion Principle is a fundamental principle in quantum mechanics that states that no two particles with half-integer spin can occupy the same quantum state simultaneously. This principle helps to explain the behavior of electrons in atoms, preventing them from collapsing into the nucleus and determining the electronic structure of atoms and molecules.
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95.
Two positive charges repel, so how is it possible to have a nucleus with multiple protons in such proximity?
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Answer:
The Strong Nuclear Force Holds Them Together
Explanation:
The strong nuclear force is a fundamental force that acts within the nucleus of an atom to hold protons and neutrons together. This force is much stronger than the electromagnetic force that causes like charges to repel, allowing multiple protons to exist in close proximity within the nucleus without breaking apart.
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96.
How many grams are in a pound?
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Answer:
454
Explanation:
There are 454 grams in a pound. This conversion is a commonly known fact and is used in various contexts such as cooking and measuring weight.
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97.
What is the second derivative of displacement?
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Answer:
Instantaneous Acceleration
Explanation:
The second derivative of displacement gives the rate of change of acceleration, also known as instantaneous acceleration. This means it represents how quickly the acceleration of an object is changing at a specific moment in time. By taking the second derivative of displacement, we can analyze how the acceleration of an object is varying over time, providing valuable information about its motion and dynamics.
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98.
What was originally defined as one 10-millionth of the distance from the equator to the North Pole?
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Answer:
Meter
Explanation:
The meter was originally defined as one 10-millionth of the distance from the equator to the North Pole. This definition was later refined and standardized to be based on the speed of light in a vacuum.
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99.
What part of the atmosphere helps radio signals to skip?
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Answer:
Ionosphere
Explanation:
The ionosphere is a region of the Earth's atmosphere that is ionized by solar and cosmic radiation. It contains charged particles that can reflect and refract radio waves, allowing them to bounce off the ionosphere and travel long distances by skipping along its layers. This phenomenon is known as ionospheric skip or skywave propagation, and it is utilized in long-distance radio communication.
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100.
What is "humiture"?
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Answer:
Humidity And Temperature
Explanation:
Humiture is a term used to describe the combined effect of humidity and temperature on the perception of how hot or cold the environment feels. It takes into account both the actual temperature and the amount of moisture in the air, as these factors can greatly influence how comfortable or uncomfortable a person may feel in a certain environment. This term is often used in weather forecasting and climate studies to better understand the overall thermal comfort experienced by individuals.
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This Easy History Trivia Is a Quick Trip Through Time
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