A woman eats a cupcake and proposes to work off its 400-kJ energy content by exercising with
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A woman eats a cupcake and proposes to work off its 400-kJ energy content by exercising with a 15-kg barbell. If each lift of the barbell from chest height to overhead is through 60 cm and the efficiency of her body under these circumstances is 10 percent, how many times must she lift the barbell?
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Solution We know that the energy of a food is about 400 kJ pe...View the full answer
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Labindao Antoque
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