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12 November, 04:32

an incandescent lightbulb has an efficiency of 2.1% and a power of 60 w. how much light energy does the lighbulb produce in 1 second

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  1. 12 November, 04:42
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    Power output of the bulb:

    0.021 * 60 W = 1.26 W

    Energy produced by the bulb in 1 second:

    E = Pt

    E = (1.26 W) (1 s)

    E = 1.26 J

    Round as needed.
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