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Select the correct answer.
A mixer-grinder has an efficiency of 65 percent. If the output work is 50 joules, what is the amount of input work required?

Respuesta :

HamK

Answer:77J in 2 s.f.

Explanation:

Use formula,

E = ( O / I ) * 100%

Where,

E = efficiency

O = Output

I = Input

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