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Physics, 17.04.2020 22:44 hi105

A weightlifter curls a 28kg bar, raising it each time a distance of 0.70m .
How many times must he repeat this exercise to burn off the energy in one slice of pizza? Assume 25% efficiency.
Express your answer using two significant figures.

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A weightlifter curls a 28kg bar, raising it each time a distance of 0.70m .
How many times mu...
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