3 years ago

3

Physics

2 answers:

kramer3 years ago

5 0

Answer:

60.2 J

Explanation:

Efficiency is the ratio of work out to work in.

e = Wout / Win

0.86 = Wout / 70 J

Wout = 60.2 J

jeka943 years ago

5 0

60.2 joules is correct

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