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For electromagnetic radiation, frequency x wavelength equals the speed of liqht, c, in a vacuum, which is 3.0 x 108 cm/s.

Formula: c = frequency x wavelength

Your given information is the frequency of 2.5 x 108/s.

Your known information is c, which is 3.0 x 108 m/s.

To solve for wavelength, do the following:

wavelength = c/frequency = (3.0 x 108 m/s)/(2.5 x 108/s) = 12 m

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Q: What is the wavelength of radiation that has a frequency of 2.5 times 10 to the 8th power?
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