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OpenStudy (anonymous):
The input work done on a machine is 9.63 × 103 joules, and the output work is 3.0 × 103 joules. What is the percentage efficiency of the machine?
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OpenStudy (anonymous):
efficieny %=output/input*100 =31.25%
OpenStudy (anonymous):
thx everytime i try it i feel like i do something wrong
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