what is the efficiency of a machine if your work on the machine is 1,200 j and the machines output work is 300j

asked Nov 4, 2020 26.6k views

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Answer:

25%

Step-by-step explanation:

Efficiency is (output work ÷ input work) × 100

Efficiency = (300 J ÷ 1200 J ) × 100 %

= 25%

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