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March 28, 2017

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If the frequency of oscillation of the wave emitted by an FM radio station is 89.8 MHz, determine the wave's wavelength.

This is what I did:

89.8 MHz = 89800000 Hz
v = lambda x f
lambda = v/f = 343 m/s/89800000 Hz = 3.82 x 10^-6 m

What am I doing wrong?

  • physics - ,

    You are using the velocity of sound instead of the velocity of light. There is a considerable difference in them.

  • physics - ,

    How do you know that the speed of light should be used.

    I used the speed of sound because the question said, "radio station".

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