WPRR-AM is a radio station that serves the Grand Rapids, Michigan, area. The main broadcast frequency is 1680 kHz. At a certain distance from the radio station transmitter, the magnitude of the magnetic field of the electromagnetic wave is 8.5 x 10-11 T. (a) Calculate the wavelength. 178.57 m (b) What is the angular frequency? 1.05E7 rad/s (c) Find the wave number of the wave. 5.6E-3 Your response differs from the correct answer by more than 10%. Double check your calculations. rad/m (d) What is the amplitude of the electric field at this distance from the transmitter? 2.55E-2 V/m