Physics, 23.08.2019 12:30 kimlyn58p0wyn0
Awoman eats a cupcake and proposes to work off its 400-kj content by exercising with a 15-kg barbell. if each lift of the barbell from the chest height to overhead is through 60 cm and the efficiency of her body under these circumstances is 10% how many times must she lift the barbell?
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Awoman eats a cupcake and proposes to work off its 400-kj content by exercising with a 15-kg barbell...
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