Normal radio-frequency waves can’t go through more than a few meters beneath the surface of the ocean. One process of communicating with submerged submarines employs very low frequency (VLF) radio waves. Determine the wavelength (in air) of a 10.0-kHz VLF radio wave?
i) 50.0 km
ii) 30.0 km
iii) 40.0 km
iv) 10.0 km