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Physics 19 Online
OpenStudy (anonymous):

What is the formula to find efficiency of simple machines?

OpenStudy (anonymous):

can someone please help me!!!

OpenStudy (anonymous):

\[E=\frac{ Useful Energy Converted }{ Total Energy Input }\] or \[\frac{ (power)output }{ (power)input }\] multiply them both into 100 and you get your answer.

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