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Umnica [9.8K]
3 years ago
8

Please explain how you got the answer :(

Physics
1 answer:
tensa zangetsu [6.8K]3 years ago
3 0

Answer:

36.5 kJ

Explanation:

Energy by machine = energy to machine × efficiency

E = 52.1 kJ × 0.70

E = 36.5 kJ

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