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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 510 kcal of food energy? (Enter
(a)What is the efficiency of an out-of-condition professor who does 1.90 105 J of useful work while metabolizing 510 kcal of food energy? (Enter your answer as a percentage. Enter a number.)
(b)How many food calories (in kcal) would a well-conditioned athlete metabolize in doing the same work with an efficiency of 15%? (Enter a number.)
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