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17 June, 05:15

A gas-powered lawnmower is rated at 98 db. how many times more intense is the sound of this mower than that of an electric-powered mower rated at 70 db?

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  1. 17 June, 06:24
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    The gas - powered mower is

    (98dB - 70dB) = 28 dB louder.

    28 dB = 10^2.8

    = 631 times as much sound power.
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