Radio astronomers detect radio waves at a frequency of 660 Hz. Given that radio waves travel at the speed of light (3.0 x 10^8 m/s), the wavelength of these radio waves would be:
Select one: a. 2.2 x 10^-6 m b. 4.55 x 10^3 m c. 4.55 x 10^5 m d. 1.98 x 10^14 m