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31 July, 09:47

How many joules of energy does a 100-watt light bulb use per hour?

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  1. 31 July, 12:06
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    Watt is a unit of power that is a simplified form of the quotient of joules and seconds.

    1 Watt = 1 joule / second

    It is known that 1 hour is equal to 60 minutes that is also equal to 60 seconds. Converting 1 hour to second,

    1 hour x (60 minutes/1 hour) x (60 seconds/1 minute) = 3600 sec

    Thus, for every hour, there is 3600 seconds.

    Energy = (100 Joule/second) (3600 s)

    Energy = 360,000 joule

    Thus, the energy emitted by the bulb is equal to 360,000 joule.
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