What is the wavelength of a radio photon from an "am" radio station that broadcasts at 1080 kilohertz?

208.3 meters The product of the wavelength multiplied by the frequency will equal the speed of light which is 299792458 m/s. Simple algebra will tell you that you can divide the speed of light by the frequency to get the wavelength. So 224997958 m/s / 1080000 1/s = 208.3314426 m Rounding to 4 significant digits gives you 208.3 meters.