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18 June, 09:46

A horse does 910 J of work in 380 seconds while pulling a wagon. What is the power output of the horse? Round your answer to two significant figures.

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  1. 18 June, 11:49
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    Answer: 2.4 watts

    Explanation:

    Work done by horse = 910J

    Time = 380 seconds

    Power output of the horse = ?

    Recall that power is the rate of doing work. Thus, power is workdone divided by time taken.

    i. e Power = (work/time)

    Power = 910J/380seconds

    Power = 2.395 watts (rounded to two significant figures as 2.4 watts)

    Thus, the power output of the horse is 2.4 watts
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