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Homework Help: Intensity levels

  1. Dec 1, 2004 #1
    A recording engineer works in a soundproofed room that is 43.5 dB quieter than the outside. If the sound intensity in the room is 1.00 10-10 W/m2, what is the intensity outside?

    Here is how I THINK I should be solving this problem.

    Intensity level = 10dB * log ( I / Io)

    Intensity level = 43.5
    Io = 1x10^-10


    I = 10 ^ { (43.5 + logIo)/10 }

    The computer is telling me I am wrong, can anyone help please? Thanks a lot!
  2. jcsd
  3. Dec 1, 2004 #2
    I = (1e-10)10^(43.5/10)
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