Physics
Physics, 19.03.2021 20:10, NetherisIsTheQueen

A stage crew member uses a pulley system to close the curtains on stage. If he does 620 Joules of work and the pulley system does 415 Joules of work, the efficiency of the pulley system is

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A stage crew member uses a pulley system to close the curtains on stage. If he does 620 Joules of wo...

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