+50 An electromagnetic wave is represented by the electric field represented mathematically by:
E= Eo cos [(9.369x10^6 m^-1) x +(2.809x10^15 s^-1) t]
(a) Find the frequency and wavelength of the wave.
(b) Check that the speed of the wave is as expected, namely, c.
(c) What is the direction of the motion of the wave?
(d) If the electric field is vibrating north-south, how is the magnetic field vibrating?
(e) If Bo = 4.000x10^-9T, finf Eo, the intensity of the magnetic field.
(f) Find the average intensity, I = S, of the wave.
