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Torricellis´s law and viscosity

  1. Nov 16, 2009 #1
    1. The problem statement, all variables and given/known data

    Hey, im doing some work with torricellis equation and I have some questions. Im using the equation:

    dH/dt*A(h)=-B*squareroot(2*g*h)

    My question is, in my textbook it says the general formula is:

    dH/dt*A(h)=-0.6*B*squareroot(2*g*h)

    I want to know where the constant 0.6 comes from. Is it a constant which takes height for viscosity or turbulence and if so how do I find this constant?

    Thanks.
     
  2. jcsd
  3. Nov 16, 2009 #2

    tiny-tim

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    Welcome to PF!

    Hi sting10! Welcome to PF! :smile:

    (have a square-root: √ :wink:)
    From http://en.wikipedia.org/wiki/Bernoulli's_principle#Real_world_application"
     
    Last edited by a moderator: Apr 24, 2017
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