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Homework Help: How does power relate to intensity?

  1. Dec 11, 2005 #1
    In this problem you will use the decibel scale to analyze a small firecracker that emits 1200 W of peak power.

    How does I(the intensity) relate to 1200 peak power?

    THANKYOU!!!
     
  2. jcsd
  3. Dec 12, 2005 #2

    Tide

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    Intensity is power per unit area.
     
  4. Dec 12, 2005 #3
    Oh, I think I figured it out, the area is the area of the sphere, not a circle!
    Isn't it right?
     
  5. Dec 12, 2005 #4

    Pengwuino

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    The surface area you mean?
     
  6. Dec 12, 2005 #5
    P/A where A is the area of a sphere! isn't it?
     
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