Be sure you understand the relationship between speed (c), frequency (f), and wavelength (X) for electromagnetic waves. The formula is:

Calculate the wavelength of a radio wave whose frequency is 100 KHz (100,000 cycles per second)._

Solution

Thus,

186,000 miles/second 100,000 cycles/second

Speed = Frequency x Wavelength

Wavelength - Speed 300,000 km/second Frequency 100,000 cycles/second

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