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-   -   Waves (https://www.askmehelpdesk.com/showthread.php?t=23513)

  • Mar 27, 2006, 07:57 PM
    mrs_vick
    Waves
    the speed of radio waves in air is 3 x 10^8 m/s. what is the wavelength of radio waves having a frequency of 5 x 10^5 hz? :eek:
  • Mar 28, 2006, 12:35 AM
    colbtech
    wavelength = 299792458 divided by frequency

    approx: 6000m
  • Mar 28, 2006, 02:46 PM
    rudi_in
    Thank you for posting your question to the Ask Me Help Desk!

    A formula that you need to be familiar with here is...

    Speed = Frequency x Wavelength
    Where speed is measured in meters per second, frequency is measured in Hertz, and wavelength is measured in meters.

    The speed of the wave as given in your problem is 3 x 10^8 m/s. If the wave has a frequency of 5 x 10^5 Hz we can then substitute these values in the appropriate place in the formula.

    3 x 10^8 = (5 x 10^5) x (wavelength)

    To solve, we can divide both sides by 5 x 10^5

    This will give us a wavelength of 600 meters.
  • Mar 29, 2006, 12:22 AM
    colbtech
    Apologies to all... doh!

    Bad day at the races.

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