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A. What is the efficiency of an out-of-condition professor who does 1.90 10 5 J of useful work while metabolizing 490 kcal of food energy?
A. What is the efficiency of an out-of-condition professor who does 1.90 105 J of useful work while metabolizing 490 kcal of food energy?
B. How many food calories (in kcal) would a well-conditioned athlete metabolize in doing the same work with an efficiency of 25%?
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