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Simple dopler question.!

  1. Jan 27, 2006 #1
    hi what will happen to teh sign on doppler's general equation when both source and dectector are moving in the same direction at the same speed.? I didnt find this on my books.? Does anyone knows?

    dopler equation

    F' = f (V +/- Vd)
    ------------
    (V +/- Vs)


    ?
     
  2. jcsd
  3. Jan 28, 2006 #2
    Does anybody know about this?
     
  4. Jan 28, 2006 #3
    if both source and dectector are moving in the same direction at the same speed, is there a relative speed between them?

    then, does it matter what the sign is?
     
  5. Jan 28, 2006 #4
    yeah both of them are at same direction at same speed 160 km
     
  6. Jan 28, 2006 #5
    There wont be any doppler effect when both the observer and source is moving at the same rate of speed.
     
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