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Homework Help: Logarithms and Intensity-HELP !

  1. Apr 16, 2008 #1
    Logarithms and Intensity---HELP ASAP!

    1. The problem statement, all variables and given/known data
    a)What is the intensity of sound at 123 dB?

    b)Compare it to that of a whisper at 20 dB.

    2. Relevant equations

    something with logarithms??

    3. The attempt at a solution

    a) 10^123
  2. jcsd
  3. Apr 16, 2008 #2


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    Science Advisor
    Homework Helper

    Inensity is equivalent to power and so the ratio of power is
    L = 10* log * (P1/P0)

    Where Log is the base 10 log ( labbled Log on your calculator)
  4. Apr 16, 2008 #3
    so for a) I would do:

    is that correct?
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