sethandkiaya sethandkiaya

25-02-2019
Physics

contestada

A mechanical device requires 420 J of work to do 230 J of work to lift a crate. What is the efficiency of the device? 190% 0.5% 183% 55%

Respuesta :

dylant636 dylant636

01-03-2019

power out / power in so 230/420 = 0.547619048 using sigfiges its about .55 or 55%

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abrahamruiz49 abrahamruiz49

10-05-2019

Answer:

55%

Explanation:

Answer Link

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