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12 October, 21:16

A machine does 1000 J of work in 3.5 minutes (210 seconds). What is

the power output of this machine?

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Answers (1)
  1. 13 October, 00:20
    0
    Answer: 4.76 watts

    Explanation:

    Work = 1000 J

    Time = 3.5 minutes (210 seconds)

    Since the SI unit of time is seconds, 210 seconds will be used in calculation.

    Power output of the machine = ?

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

    i. e Power = (work/time)

    Power = 1000J/210seconds

    Power = 4.76 watts

    Thus, the power output of the machine is 4.76 watts
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