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Sound waves

  1. Nov 20, 2005 #1
    A 95-dB sound wave strikes an eardrum whose area is 5.0 x 10¯5 m². How much energy is absorbed by the eardrum per second? ...been stuck on this question for so long.
  2. jcsd
  3. Nov 20, 2005 #2

    Chi Meson

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    First, convert decibels to "intensity" using that equation with the "log" in it. Intensity equals power divided by area, measured in "watts per meter squared."

    Your answer, "energy per second" is the same thing as power.
  4. Nov 20, 2005 #3
    thanks a lot! i get it now =)
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