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Finding wavelength with just frequency?

  1. May 27, 2009 #1
    One radio station in the middle of the FM band has a frequency of 95.0 MHz. What is its wavelength?



    lambda=v/f



    I assume that the velocity of the wave is 343 m/s. I convert 95MHz to Hz, which is 95,000,000 Hz.
    lambda=(343 m/s) / 95,000,000 Hz.
    I come up with 3.51e-6.
    Webassign, being a big jerk, marks it wrong.
    What am i dong wrong =(
    I tried dividing by 95 MHz anyway just to see, and that was wrong as well.
    Thanks in advance for your guys' help! =)
     
  2. jcsd
  3. May 27, 2009 #2
    Your approach looks right. I got 3.61e-6 so maybe your program is sensitive to that
     
  4. May 27, 2009 #3

    Hao

    User Avatar

    Radio refers to electomagnetic waves, which propagate at the speed of light, which is the speed of the wave in this question.
     
  5. May 27, 2009 #4
    Yeah...i was about to delete this forum topic becuase i finally found the same problem in an earlier assignment.
    I'd have to use the speed of light and divide the Hz. xD Woops.
    Thanks guys =)
     
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