Physics - sound

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When wearing proper ear protection, a jack hammer operator experiences a sound intensity of 1x10^-6 W/m2. The ear protection purpots to reduce the sound intensity by 100 times. What is the actual sound level of the jack hammer?

  • Physics - sound -

    I = 10^-4 W/m^2

    10 log(10^-4/10^-12)
    10 log 10^8
    80 log 10
    80 dB
    between busy street traffic and a subway train

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