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An athlete doing push-ups performs 650 kJ of work and loses 425 kJ of heat. What is the change in the internal energy of the athlete?
a) -225 KJ
b) -1075 KJ
c) 1075 KJ
d) 225 KJ
An athlete doing push-ups performs 650 kJ of work and loses 425 kJ of heat. Wh...
Consider the head-on collision of two masses, m1 = 3 kg moving to the right wi...
A skater pushes straight away from a wall. She pushes on the wall with a force...
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