An athlete training for an event does 653 104 j of work


An athlete training for an event does 6.53 104 J of work during a workout and gives off 6.17 105 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.

What is the amount of heat input needed for the amount of work the athlete does? Where does this heat input come from? J

(b) What is his efficiency?

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Physics: An athlete training for an event does 653 104 j of work
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