A lawnmower engine running for 20 min does 4,560,000 J of work. What is the power output of the engine? (Power: P = W/t)

Power is work divided by time: P = W/t. Convert 20 minutes to 1,200 seconds, then calculate 4,560,000 J ÷ 1,200 s = 3,800 W. The engine’s power output is 3,800 W, choice A.

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