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20 September, 00:24

Calculate how much power, in watts, is needed to cut a lawn in 50 min if the work involved is 100,000 J

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  1. 20 September, 00:42
    0
    Answer:The formula to use is ...

    P = W / t

    Therefore, you should get ...

    P = 100,000 J / (50 min * 60 sec / 1 min)
  2. 20 September, 00:43
    0
    1 Joule per second is equal to 1 watt.

    1 J/s = 1 W

    Therefore you have 50 Min = 3000 seconds

    so to find the power it's 100 000J/3000 sec = 33.3W
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