WinchesterGirl33981 WinchesterGirl33981

30-05-2023
Physics

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A weightlifter curls a 31 kg bar, raising it each time a distance of 0.60 m.
How many times must he repeat this exercise to burn off the energy in one slice of pizza? Assume 25% efficiency. Energy content of one slice of pizza is 1260 kJ.

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