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Meaning of Derivating PV=K

  1. Feb 27, 2009 #1
    Hi, I'm wondering what the physical meaning there is to taking the volume derivative of the equation pv=k.

    d/dv [ pv = k ]
    (v * dp/dv ) + p = 0

    I know this has to do with the elasticity of a gas but I am unsure as to why this process of deriving the equation pv = k was taken. Any help would be appreciated.

  2. jcsd
  3. Feb 27, 2009 #2
  4. Feb 28, 2009 #3
    The equation is important because in this process....according to the ideal gas equation,the temperature remains constant....and thus the internal energy.
    I hope this is what you asked......if not please elaborate a little more on what you mean........
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