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What is energy density?

  1. Dec 7, 2009 #1
    and what is kinetic energy spectrum?
     
  2. jcsd
  3. Dec 9, 2009 #2
    Energy density is the amount of energy per unit of volume. So if I have 10 joules of energy stored in a capacitor, and the capacitor has a volume of 0.001 cubic meters, then the capacitor has an average energy density of 10 / 0.001 = 10 000 joules per cubic meter (for the electrical energy it stores, that is).

    As for "kinetic energy spectrum", you're going to have to explain a little bit more. Where did you see those words together?
     
  4. Jul 11, 2010 #3
    thank you.
     
  5. Jul 12, 2010 #4
     
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