How do I answer number 4? Please help x

asked May 7, 2020 195k views

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6 votes

Step-by-step explanation:

Efficiency is the ratio of energy out to energy in.

e = Eout / Ein

0.52 = 800 J / Ein

Ein ≈ 1538 J

Round as needed.

Dmila Ram answered May 14, 2020

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