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    mrs_vick's Avatar
    mrs_vick Posts: 7, Reputation: 1
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    #1

    Mar 27, 2006, 07:57 PM
    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:
    colbtech's Avatar
    colbtech Posts: 748, Reputation: 66
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    #2

    Mar 28, 2006, 12:35 AM
    wavelength = 299792458 divided by frequency

    approx: 6000m
    rudi_in's Avatar
    rudi_in Posts: 251, Reputation: 45
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    #3

    Mar 28, 2006, 02:46 PM
    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.
    colbtech's Avatar
    colbtech Posts: 748, Reputation: 66
    Senior Member
    		  
    #4

    Mar 29, 2006, 12:22 AM
    Apologies to all... doh!

    Bad day at the races.
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