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(a) What is the efficiency of an out-of-condition professor who does 1.90 ✕ 105 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%? kcal
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(a) What is the efficiency of an out-of-condition professor who does 1.90 ✕ 105 J of useful work whi...
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