Energy Transformations — Unit test Answers
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The gravitational force between two objects is 45,000 N. What will be the gravitational force between the two objects if the distance between the objects is reduced by one-half?
A
11,250 NB
22,500 NC
90,000 ND
180,000 N22
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Two satellites, X and Y, are orbiting Earth. Satellite X is1.2 × 106 m from Earth, and Satellite Y is 1.9 × 105 m from Earth.
A
Satellite X has a greater period and a faster tangential speed than Satellite Y.B
Satellite X has a greater period and a slower tangential speed than Satellite Y.C
Satellite X has a shorter period and a faster tangential speed than Satellite Y.D
Satellite X has a shorter period and a slower tangential speed than Satellite Y.23
An object is in circular motion. How will the object behave if the centripetal force is removed?
A
It would move in a line away from the circle’s center.B
It would move in a line toward the circle’s center.C
It would move in a curved, circular path.D
It would move in a line tangent to the circular path.24
A spinning top rotates so that its edge turns at a constant speed of 0.63 m/s. If the top has a radius of 0.10 m, what is the centripetal acceleration of the edge of the top?
A
0.016 m/s2B
0.73 m/s2C
4.0 m/s2D
6.3 m/s225
Review the table detailing the mass of Jupiter’s moons and their distance from the planet.
A
IoB
EuropaC
GanymedeD
CallistoDid you find these answers helpful?
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