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Angular frequency, phase velocity, and period

  1. Mar 7, 2009 #1
    1. The problem statement, all variables and given/known data
    Given: angular frequency=2000pi
    phase velocity=320m/s
    period=? unknown


    2. Relevant equations
    f=w/2pi; w=omega. T=1/f. phase velocity = lambda/T

    3. The attempt at a solution
    i don't know what the sgnificance of the phase velocity is. this is because from 1/T = w/2pi, i can already compute the T=2pi/w or 1x10^-3. unfortunately, it s not in the choices. can someone help? thanks!
     
  2. jcsd
  3. Mar 7, 2009 #2
    The phase velocity isn't important. If you have angular velocity (w) then you can always find T using T = 2pi/w.
     
  4. Mar 7, 2009 #3
    2pi/w should give piX10^03, not 1X10^-3.
     
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