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Homework Help: Flow rate+Bernoulli

  1. Nov 24, 2008 #1
    1. The problem statement, all variables and given/known data

    When physicians diagnose arterial blockages, they quote the reduction in flow rate. If the flow rate in the artery has been reduced to 10% of its normal value by a blood clot and the average pressure difference has increased by 20% by what factor has the clot reduced the radius of the artery.

    2. Relevant equations

    3. The attempt at a solution
    Totally lost on how to start this one, I kind of think that the following equation has something to do with it, bu not sure

    D=sqrt(4Q/piv) where v= velocity Q = volumetric flow rate
  2. jcsd
  3. Nov 24, 2008 #2


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    Welcome to PF!

    Welcome to PF! :smile:

    (have a pi: π :wink:)
    ok, now combine that with Bernoulli's equation …

    what do you get? :smile:
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