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: What is the speed of the blood?

  1. Jul 16, 2005 #1
    The artery in Figure 22-11 has an inside diameter of 2.30 mm and passes through a region where the magnetic field is 0.065 T.


    (a) If the voltage difference between the electrodes is 175 µV, what is the speed of the blood?
    m/s

    quite honestly, i do not know how to go about this one maybe v= E/B BUT E is not given and i don,t know of an equation to acquire E from the above eaqn, since no charge is given. how should i go about. thks
     
  2. jcsd
  3. Jul 16, 2005 #2
    you can find E because you know the potential difference and the geometry of the blood vessel. The magnitude of the electric field depends on the distance a point is from a potential difference.
     
  4. Jul 17, 2005 #3
    thank very solvable now :)
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook