Pripremni Test Iz Fizike - VII Razred

The correct answer is "kilogram, kg" because the kilogram is the standard unit of measurement for mass. It is a metric unit and is used to measure the amount of matter in an object. The abbreviation "kg" is commonly used to represent the kilogram in scientific and everyday contexts.

The correct answer is "njutn, N". The explanation is that the unit of force is called the newton, symbolized by the letter N. It is named after Sir Isaac Newton, a famous physicist who made significant contributions to the study of forces and motion. The newton is defined as the amount of force required to accelerate a one-kilogram mass at a rate of one meter per second squared.

The correct answer is "njutn, N". This is because the unit of measurement for body weight is expressed in newtons (N).

If a body is more inert, it means that it has a greater resistance to changes in its state of motion. This resistance is directly related to the mass of the body. Therefore, if a body is more inert, it implies that it has a greater mass.

Gravitaciono međudjelovanje je uvijek privlačno jer gravitacija je sila koja privlači tijela jedno prema drugome na temelju njihove mase. Prema zakonu gravitacije, veće tijelo će privlačiti manje tijelo s većom silom. Ovo se može primijetiti u svakodnevnim situacijama, poput toga kako Zemlja privlači objekte prema sebi ili kako Mjesec privlači oceane što rezultira plimnim valovima. Odbijanje gravitacijskog međudjelovanja nije moguće prema trenutnom razumijevanju fizike.

The correct answer is "kilogram po metru kubnom, kubni metar." This is because the units for density are typically expressed as mass per unit volume, which is represented by "kilogram per cubic meter." The second part of the answer, "kubni metar," refers to cubic meter, which is a unit used to measure volume.

The given statement states that gravitational force is expressed in Newtons (N), which is correct. Newton is the unit of measurement for force, and gravitational force is measured in Newtons as it is a type of force. Therefore, the answer "TAČNO!" is correct.

The correct answer is "intenzitetom, pravcem i smjerom" (intensity, direction, and sense). This means that the quantity of force (intensity), the path along which it acts (direction), and whether it is a push or pull (sense) are all necessary to fully determine the physical quantity called force.

The correct answer is "masa tijela". Mjera inertnosti tijela refers to the measure of inertia of an object, which is directly related to its mass. Inertia is the property of an object to resist changes in its motion, and it is directly proportional to the mass of the object. Therefore, the mass of an object determines its inertia, making it the correct answer in this context.

The correct answer is "mjera inertnosti tijela". Inertia is the property of an object to resist changes in its state of motion. The mass of an object is a measure of its inertia, meaning that objects with larger mass have greater resistance to changes in their motion. Therefore, mass is a measure of inertia of an object, and this is the most appropriate explanation for the given answer.

U čvrstom agregatnom stanju, međumolekulske sile su najjače. U ovom stanju, molekule su blizu jedna drugoj i imaju snažne interakcije među sobom. Ove sile uključuju dipol-dipolne interakcije, vodikove veze i Londonove disperzijske sile. U gasovitom stanju, molekule su daleko jedna od druge i imaju vrlo slabe međumolekulske sile. U tečnom stanju, međumolekulske sile su jače nego u gasovitom stanju, ali slabije nego u čvrstom stanju.

The correct answer is "sile kohezije" (cohesive forces). These forces refer to the attractive forces between molecules of the same substance. They are responsible for holding the molecules together and creating surface tension. Adhesive forces, on the other hand, refer to the attractive forces between molecules of different substances. Nuclear forces, on the other hand, refer to the forces that hold atomic nuclei together.

The correct answer is "Molekuli formiraju atome." This statement is not true because atoms form molecules, not the other way around. Molecules are formed when two or more atoms chemically bond together. Atoms, on the other hand, are the basic units of matter and cannot be broken down into smaller particles by ordinary chemical means. Elektroni se nalaze u atomskom omotaču (Electrons are located in the atomic shell) is a true statement as electrons are found in the electron shells or orbitals surrounding the nucleus of an atom.

When an object is moving in inertia, it means that no external force is acting on it. According to Newton's first law of motion, an object in motion will continue to move at a constant velocity unless acted upon by an external force. Therefore, the speed of the object will not change when it is moving in inertia. Hence, the correct answer is "Ne!" (No!).

The correct answer is the force with which the Earth attracts all objects, and the force with which the Earth attracts all objects that are located on the surface and above the surface of the Earth. This means that the Earth's gravitational force acts on all objects, regardless of their location in relation to the Earth's surface.

The weight of an object on Earth is equal to the mass of the object multiplied by the acceleration due to gravity (9.8 m/s^2). In this case, the weight of the body is given as 49.05 N. Since weight = mass x acceleration due to gravity, we can rearrange the formula to find the mass. Dividing the weight by the acceleration due to gravity (49.05 N / 9.8 m/s^2) gives us a mass of approximately 5 kg.

The correct answer is "čvrsto, tečno i gasovito". This answer correctly lists the three basic states of matter: solid, liquid, and gas.

The correct answer is that the weight of an object is the force with which the object acts on a horizontal surface or pulls on a suspended string. This is because weight is the force exerted by gravity on an object, and it is directed towards the center of the Earth. When an object rests on a horizontal surface or is suspended by a string, the weight of the object is balanced by an equal and opposite force exerted by the surface or the string. Therefore, the weight of the object is the force with which it acts on the surface or the string.