A student lifts a weight of 10.0 N a distance of 0.5 meters. If this exercise is repeated 50 times in 100 seconds, then the average power output of the student is
A) 2.5 W.
B) 3.1 W.
C) 3.6 W.
D) 4.0 W.
E) 4.8 W.
Correct Answer:
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