Answer:
Step-by-step explanation:
efficiency = energy output x 100 / energy input
putting the values
22.3 = 6.25 x 10⁴ x 100 / energy input
energy input = .28 x 10⁶
= 28 x 10⁴ J
energy that needs to be put into the engine = 28 x 10⁴
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