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Density and pressure relationship

  1. Apr 2, 2010 #1
    I am not a physics person and came across this

    diff (density)/diff (time) = (1/speed of sound^^2) diff (pressure)/diff (time)

    I want to know what are conditions of application of this? I was advised that the equation assumes thermal equilibrium as density is a function of temperature and pressure. I want to be sure before going any further.

    Many thanks
     
  2. jcsd
  3. Apr 3, 2010 #2

    vanesch

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  4. Apr 3, 2010 #3
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