An athlete training for an event does 5.28 x 10^4 J of work during a workout and
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Question:
An athlete training for an event does 5.28 x 10^4 J of work during a workout and gives off 2.97 x 10^5 J of heat. Consider the athlete to be like a heat engine.
(a) Determine the magnitude of the change in internal energy of the athlete. ___ J
(b) What is his efficiency?
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