How many times louder is the intensity of sound at a rock concert in comparison with that of a whisper, if the two intensity lev

Question

How many times louder is the intensity of
sound at a rock concert in comparison with
that of a whisper, if the two intensity levels
are 130 dB and 2 dB, respectively?

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Farah 3 days 2021-07-19T14:12:08+00:00 1 Answers 1 views 0

Answers ( )

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    2021-07-19T14:13:46+00:00

    Answer: the intensity of sound at a rock concert will be 6.31 × 10^12 time louder than that of a whisper.

    Explanation: Given that sound at a rock concert power is 130 dB of intensity l2

    a whisper power is 2 dB of intensity l1

    Using the formula

    130dB – 2dB = 10Log(I2/I1)

    128/10 = logI2/I1

    12.8 = log (I2/I1)

    I2/I1 = 6.31 × 10^12

    Therefore, the intensity of sound at a rock concert will be 6.31 × 10^12 time louder than that of a whisper.

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