10. [-/4 Points] MY NOTES DETAILS OSCOLPHYS2016 7.8.P.047. ASK YOUR TEACHER PRACTICE ANOTHER (a) What is the efficiency of an out-of-condition professor who does 2.20 x 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%? kcal

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