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11 July, 20:56

Which of the following would have the highest power rating? 100 joules of energy used in 0.5 seconds 500 joules of energy used in 0.5 seconds 100 joules of energy used in 0.25 seconds 500 joules of energy used in 0.25 seconds

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  1. 11 July, 21:05
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    Power = (amount of energy moved or work done) / (the time it takes)

    100 joules of energy used in 0.5 seconds = (100/0.5) = 200 watts

    500 joules of energy used in 0.5 seconds = (500/0.5) = 1,000 watts

    100 joules of energy used in 0.25 seconds = (100/0.25) = 400 watts

    500 joules of energy used in 0.25 seconds = (500/0.25) = 2,000 watts

    The last choice describes the greatest power.
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