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When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false
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Physics, 21.06.2019 21:40
Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?
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Physics, 22.06.2019 03:00
An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.
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Acar traveling at 25 m/s starts to decelerate steadily. it comes to a complete stop in 6 seconds. wh...
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