Flashcard Set Preview
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| 1 |
(1) The value of the acceleration of an object moving at constant velocity is ___.
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0 m/s2
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| 2 |
(1) A vector quantity has both magnitude and ___ while a scalar has only magnitude.
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direction
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| 3 |
(1) State Newton's First Law as completely as possible.
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An object at rest or in motion will remain in that state until acted on by an unbalanced force.
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| 4 |
(1)State Newton's Third Law.
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For every action there is an equal and opposite reaction.
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| 5 |
(1)What is the contribution of Copernicus early to Astronomy?
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Sun is the center of the solar system, not the earth.
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| 6 |
(1) I'm just like you, only ___.
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Prettier
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| 7 |
(2) An object will not fall back to Earth if it is thrown horizontally with a velocity of at...
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8 km/s18,000 mph
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| 8 |
(2) ___ provides the centripetal force needed to allow a car to turn a corner.
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Friction
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| 9 |
(2) The "American" unit of power is ___.
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Horsepower
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| 10 |
(2) Energy is the ability to do ___.
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Work
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| 11 |
(2) For an object to be stable (not fall over), its center of mass (gravity) must remain over...
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Base
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| 12 |
(2) ___ keeps the planets in their orbits.
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Gravity
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| 13 |
(2) If you double your speed, how many times more distance do you need to stop?
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4 times
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| 14 |
(2) Kepler's mother was tried for ___.
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Witchcraft
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| 15 |
(2)The metric unit of power is the ___.
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Watt
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| 16 |
(2) State Kepler's First Law of planetary motion.
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The orbit of each planet is an ellipse with the Sun at the focus.
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| 17 |
(3) The value of atmospheric pressure on you right now is about ___.
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15 lb/in2
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| 18 |
(3) How many neutrons are in the nucleus of a 146C (Carbon - 14)?
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14 - 6 = 8
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| 19 |
(3) If you double the pressure of a gas, what happens to its volume?
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1/2
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| 20 |
(3) A ___ is uesed to measure atmospheric pressure.
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Barometer
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| 21 |
(3) Which phenomenon is NOT due to Bernoulli's principle?Fireplace draws smokeAirplane wingsWater...
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Water skiing
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| 22 |
(3) How many electrons are in neutral Uranium 23592U (U-235)?
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92
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| 23 |
(3) In a container of fixed volume, what happens to the pressure if you increase the temperature?
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Pressure increases.
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| 24 |
(4) Heat transfer that occurs in the absence of a medium across space is called ___.
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Radiation
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| 25 |
(4) Heat transfer involving the movement of a cooled or heated fluid is called ___.
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Convection
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| 26 |
(4) Heat transfer involving physical contact of two bodies is called ___.
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Conduction
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| 27 |
(4) Temperature is an indication of the ___ of molecules.
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Kinetic Energy (KE)MotionEnergy
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| 28 |
(4) The non-metric unit of heat amount is the ___.
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British Thermal Unit (BTU)
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| 29 |
(4) The temperature of the water in a boiling steam kettle or boiler is ___.
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212 degrees F100 degrees C
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| 30 |
(4) Does the temperature of an expanding gas increase or decrease?
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Decrease
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| 31 |
(4) Must heat be added or removed from water vapor for it to condense?
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Removed
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| 32 |
(4) Define calorie.
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Amount of heat E needed to raise 1 gram of water 1 degree C.
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| 33 |
(4) Define heat capacity of a material.
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A specific heat in how much heat must be added or removed to change the temperature of 1 gram...
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| 34 |
(5) In a parallel circuit of light bulbs, each bulb experiences the same ___.
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Voltage
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| 35 |
(5) In a standing wave, the ___ is the point where maximal amplitude or motion occurs.
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Antinode
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| 36 |
(5) Magnets are made up of small oriented regions called ___.
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Domains
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| 37 |
(5) THe thinner the wire the ___ current it can carry.
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Less
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| 38 |
(5) Lines of magnetic force come out of the ___ pole.
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N
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| 39 |
(6) the value of magnification of a flat mirror is ___.
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One
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| 40 |
(6) An optical "device" that utilizes total internal reflection is a ___.
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PrismOptical FiverPentax CameraBinoculars
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| 41 |
(6) When light enters a medium of higher refractive index, it bends ___ the perpendicular to...
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Toward
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| 42 |
(6) For a convex mirror where the object is placed "outside" the focal point (further from...
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VirtualBehindSmaller
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| 43 |
(6) For a convex lens where an object is placed outside the focal point further from the lens...
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RealInvertedOpposite side
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| 44 |
(7) Isotopes of an element differ in their ___.
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Number of neutronsAtomic Mass
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| 45 |
(7) After three half lives, what fraction of a radioisotope amount is remaining?
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1/2 X 1/2 X 1/2 = 1/8
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| 46 |
(7) 23892U has how many neutrons?
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238 - 92 = 146
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| 47 |
(7) What form of ionizing radiation is the most penetrating?
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r or v
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| 48 |
(7) Which has more energy- a photon of UV light or a photon of infra-red light?
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UV light
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| 49 |
(7) Roentgen discovered ___.
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x-rays
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| 50 |
(7) The Curies discovered which element?
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RodiumRadonThorium
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| 51 |
(7) A ___ is a positively charged electron from the nucleus.
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Positron
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| 52 |
(7) How many naturally occurring elements are there?
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92
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| 53 |
(7) J.J. Thompson proposed the ___ model of the atom.
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Plum Pudding
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| 54 |
(7) Give a way to detect radioactivity.
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GeigerCrystalsFilmBubble cloudScintillation
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| 55 |
(7) When an electron goes from a higher energy to a lower energy level, it emits a ___.
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Photon
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