A coastal radio station broadcasts electromagnetic waves at a frequency of 100MHz.
a. (i) Calculate the wavelength of the waves in free space.
b. (ii) If the instantaneous electric field amplitude in the signal is 2.0Vm−1, determine the corresponding magnetic field amplitude.
c. (iii) Estimate the time taken for these waves to travel a distance of 1500km over the ocean surface, assuming free-space propagation throughout.