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4 September, 06:42

A 3kilowatt oven supplied with 9mj, how long can it be ran for

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  1. 4 September, 06:51
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    The basic definition or formula for this condition is 1 watt = 1 joule / second

    The formula is W = J/T

    W = watts

    J = joules

    T = Time = ?

    Givens

    W = 3 kW = 3000 W

    J = 9 megaJoules = 9 * 10^6 Joules

    T = time in seconds.

    Solution

    3000 = 9 * 10^6 / T Multiply both sides by T

    3000*T = 9*10^6 Divide by 3000

    T = 9*10^6 / 3000 = 3000 seconds which is 5/6 of an hour. Answer
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