Which best explains how an object at rest deep in space and far from any massive body behaves compared to an object in free fall in earth’s gravitational field?
they behave differently because, according to the principle of equivalence, the laws of physics depend on frames of reference.
they behave differently because, according to gravitational redshift, the laws of physics depend on frames of reference.
they behave the same because, according to the principle of equivalence, the laws of physics work the same in all frames of reference.
they behave the same because, according to gravitational redshift, the laws of physics work the same in all frames of reference.

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

1.in one challenge on the titan games, competitors have to lift 200 pounds up a long ramp. angel is able to move the weight in 42 seconds. anthony gets it done in only 38 seconds. which statement is true? angel has more power than anthony. angel does more work than anthony. anthony does more work than angel. anthony has more power than angel. 2.a mountain climber exerts 41,000 j of work to climb a cliff. how much power does the climber need if she wants to finish in only 500 seconds? power = work / time 20,500,000 watts 82 watts 0.0122 watts 41,500 watts 3.your family is moving to a new apartment. while lifting a box 83 joules of work is done to put the box on a truck, you exert an upward force of 75 n for 3 s. how much power is required to do this? (hint: you only need two of the 3 numbers given! ) power = work / time 249 watts 25 watts 2075 watts 27.7 watts

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.