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Homework Help: Enough information? (WaveLength Question)

  1. Nov 23, 2006 #1
    All it the question says is that AM modulation operates at 1 AM = 1 KHz
    and 800 AM = 800 KHz. the questions says to calculate the wavelength of radio station broadcasting at 820 AM
    now i know that frequency is 820 KHz but i dont know what velocity it travels at so how do i calculate the wavelength from that
     
  2. jcsd
  3. Nov 23, 2006 #2

    rsk

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    You should know the speed it travels at.

    What speed do all electromagnetic waves travel at?
     
  4. Nov 23, 2006 #3
    i dont know its not given in the book..
     
  5. Nov 23, 2006 #4
    looking it up on the internet it says 3.0 x 10^8 m/s is that correct
     
  6. Nov 23, 2006 #5

    rsk

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    yes, that's the speed of light and it's the speed at which all em waves
     
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