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13 February, 13:43

What is the power of a hair dryer if it uses 72,000 joules of energy in 60.0 seconds?

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Answers (2)
  1. 13 February, 15:17
    0
    Power = energy/time

    So by using this equation:

    72000/60 = 1200 Watts
  2. 13 February, 15:28
    0
    Power = work done / time consumed

    = 72000/60

    = 1200 J/s

    = 1200 watt
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