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13 March, 02:11

On a recent adventure trip, Anita Break went rock climbing. Anita was able to perform 1370 J of work in 100 seconds. Determine Anita's power rating during this portion of the climb

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  1. 13 March, 05:40
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    Power = (energy) / (time)

    = (1370 joules) / (100 seconds)

    = 13.7 joules/second

    = 13.7 watts.

    That's not an awful lot of power, especially for a strenuous activity like

    rock-climbing. Shoot! Even I could probably perform at that level.

    Compare 13.7 watts to the light power coming out of a 20-watt night light.

    13.7 watts = 0.018 horsepower. (rounded)
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