You are driving in a car for 30 minutes, with the windows down and the radio at a high volume. you turn the car off and leave the car for period of time. when you return to the car and turn it on, the radio comes on at the same high volume. it hurts your ears this time. you failed to realize how loudly you were listening to the radio. this shows the principle of:
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Physics, 22.06.2019 17:30
Current from a charged capacitor lights a bulb. as time goes on the brightness of the
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Physics, 23.06.2019 00:00
You are driving to the grocery store at 20 m/s. you are 110m from an intersection when the traffic light turns red. assume that your reaction time is 0.50s and that your car brakes with constant acceleration. how far are you from the intersection when you begin to apply the brakes? what acceleration will bring you to rest right at the intersection? how long does it take you to stop after the light changes? the known values: vi=20m/s xi=110m t=.50s vf=0m/s xf=0m a=?
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Physics, 23.06.2019 13:00
Inside stars in space, the nuclei of hydrogen atoms fuse together to form helium atoms. this represents which form of energy? electrical energy nuclear energy chemical energy radiant energy
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Physics, 23.06.2019 14:30
Multiple choice. choose the one alternative that best completes the statement or answers the question. 1) if the force on an object is in the negative direction, the work it does on the object must be 1) a) negative. b) positive. c) the work could be either positive or negative, depending on the direction the object moves. 2) a truck has four times the mass of a car and is moving with twice the speed of the car. if kt and kc refer to the kinetic energies of truck and car respectively, it is correct to say that 2) a) kt = 16kc . b) kt = 1 2 kc. c) kt = kc . d) kt = 2kc . e) kt = 4kc . 3) you and your friend, who weighs the same as you, want to go to the top of the eiffel tower. your friend takes the elevator straight up. you decide to walk up the spiral stairway, taking longer to do so. compare the gravitational
Answers: 1
You are driving in a car for 30 minutes, with the windows down and the radio at a high volume. you t...
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