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28 November, 17:21

If it takes 15 minutes to dry your hair with a 1.200 kW hair drier, how much energy is used in drying your hair?

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  1. 28 November, 17:36
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    E=Pt where e = energy P = power t = time

    E=1.200kiowatt/15 minutes

    E={1200/100*1000}/15

    E=800 watt/minute
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