PrestonPaul PrestonPaul

10-06-2020
Physics

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Please explain how you got the answer :(

Please explain how you got the answer class=

Respuesta :

MathPhys MathPhys

10-06-2020

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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