What is the efficiency of an out-of-condition professor who


(a) What is the efficiency of an out-of-condition professor who does 1.90x105 J of useful work while metabolizing 500 kcal of food energy?

(b) How many food calories would a well-conditioned athlete metabolize in doing the same work with an efficiency of 25%?

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Physics: What is the efficiency of an out-of-condition professor who
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