Physics, 21.01.2021 20:00, stephaniero6

a machine has an efficiency of 70 percent, how much work does the machine do when 20000 j of work is done on it a. 14000 b. 20600 c. 1400000 or c. 2860000

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a machine has an efficiency of 70 percent, how much work does the machine do when 20000 j of work is...