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Power of wave on string

  1. Dec 10, 2016 #1
    1. The problem statement, all variables and given/known data
    http://i.imgur.com/sWZS9vQ.png
    sWZS9vQ.png

    2. Relevant equations
    P=½ √μF ω2 A2

    3. The attempt at a solution
    How is the equation related to the wavelength?
    Thanks
     
  2. jcsd
  3. Dec 10, 2016 #2

    haruspex

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    Your relevant equation has frequency in it. What connects that with wavelength?
     
  4. Dec 10, 2016 #3
    Where is frequency in the equation?
    the F in the equation isn't meaning force (i.e. tension)?
     
  5. Dec 10, 2016 #4

    haruspex

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  6. Dec 10, 2016 #5
    well, i think w is directly proportional to frequency from this web, leading the answer b, right?

    frankly, i just copy the equation from my textbook "university physics" of Young & Freedman
    every symbol means the same to the website other than F is missing in the website.
    does it mean anything for the difference?
    thanks
     
  7. Dec 10, 2016 #6

    haruspex

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    Since wave velocity is √(tension/linear density), the two equations are the same.
    ω is the angular frequency, i.e. in radians/time, rather than in oscillations/time.
     
  8. Dec 10, 2016 #7
    what i mean is w = 2 pi f
    thanks for telling me this new thing :)
     
  9. Dec 10, 2016 #8

    haruspex

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