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23 August, 10:23

Approximately how much electrical energy does a 5-W light bulb convert to radiant or thermal energy in one hour

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  1. 23 August, 11:16
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    answer

    18000 J

    explanation

    the lightbulb dissipates 5W of power

    P = ΔE / Δt

    rearrange to solve for energy

    ΔE = PΔt

    P = 5W

    t = 1 hour = 60 minutes = 3600 seconds

    ΔE = 5 * 3600

    ΔE = 18000 J
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