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Physics, 28.08.2019 06:00 manou76

Two movers use a rope system to lift a box to a third-story apartment. they do 1,200 j of work on the rope system, and the rope system does 1,020 j of work on the box. what is the efficiency

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Two movers use a rope system to lift a box to a third-story apartment. they do 1,200 j of work on th...

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