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Help needed on exponential decay

  1. Jun 24, 2003 #1
    I'm doing a research about water flowing from a barrel through a small hole. I am trying to proove that there is an exponential relationship between the height level of the water and the time. This basically implies that
    dh/dt= -kh.

    In order to do that , I have to prove first that the rate of change of volume remaining in the barrel is proportional to the pressure.
    i.e.: dV/dt = -kp. This is the bit were I got quite stuck. If someone could help me with some cool tecky ideas or some adequate sites, I would be gratefull.
  2. jcsd
  3. Jun 24, 2003 #2

    Tom Mattson

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