1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Gauge pressure of blood

  1. Feb 4, 2016 #1
    1. The problem statement, all variables and given/known data
    A person has a 5200 N/m^2 gauge pressure in a 0.01m radius artery, with blood flowing at 0.5 m/s. the gauge pressure outside the artery is 3200 N/m^2. When using her stethoscope, a physician hears a fluttering sound farther along the artery. the sound is a sign that the artery is vibrating open closed, which indicates there must be a constriction in the artery that has reduced its radius and subsequently reduced the internal blood pressure to less than the external 3200 N/m^2 pressure. What is the maximum artery radius at this constriction?

    2. Relevant equations

    Flow rate = Volume/Time

    Velocity of cylindrical vessel = Flow rate/Area

    A = pi*r^2

    Force is equal throughout

    3. The attempt at a solution

    Not a clue. There are 6 people in my class working on this together
  2. jcsd
  3. Feb 4, 2016 #2
    By any chance, are you learning about the Bernoulli equation?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted