Consider two engines. The larger is rated at 2 W and the smaller at 1 W. The sma

Question

Consider two engines. The larger is rated at 2 W and the smaller at 1 W. The smaller one can do a certain quantity of work in 2 h. The larger can do twice as much work in a time of Answer A. 1.4 h B. 2 h C. 1 h D. 4 h E. 30 min Consider two engines. The larger is rated at 2 W and the smaller at 1 W. The smaller one can do a certain quantity of work in 2 h. The larger can do twice as much work in a time of 1.4 h 2 h 1 h 4 h 30 min A. 1.4 h B. 2 h C. 1 h D. 4 h E. 30 min

Explanation / Answer

Power = Work/time smaller: 1 = W/(2) =>W = 2 Larger: Power = Work/time => 2 = 2W/time =>Time = W = 2hr........Option B

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