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30-10-2019
Physics

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A construction worker uses 1,000 J of work to screw two boards together. The screw does 855 J of work. Calculate the efficiency of the screw.

PLZ HELP!!!

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tonypew14 tonypew14

30-10-2019

Answer:

The efficiency of the screw is 85.5%

Explanation:

to calculate efficiency you have to do

efficiency=energy output/ energy input × 100%

so e=855/1000 × 100%=85.5%

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