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Homework Help: Beat frequency

  1. Jan 3, 2009 #1
    1. The problem statement, all variables and given/known data

    What would be the beat frequency if radio waves of wavelenght 3.141m and 3.135 are mixed?

    3. The attempt at a solution

    I need frequency of wave1 and wave2, because Fb=|f1-f2|
    But i dont have nothing but wavelength...
    Any hints?
     
  2. jcsd
  3. Jan 3, 2009 #2

    Hootenanny

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    Can you work out the frequency?

    HINT: At what speed do radio waves travel?
     
  4. Jan 3, 2009 #3
    I have no idea... Where can I find that?
     
  5. Jan 3, 2009 #4

    Hootenanny

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    Another hint: Radio waves are electromagnetic waves. At what speed do all EM waves travel at?
     
  6. Jan 5, 2009 #5
    Iw as trying but no idea at all...
     
  7. Jan 5, 2009 #6
    What speed does light travel at?
     
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