At one location on the Earth, the rms value of the magnetic field caused by solar radiation is 1.85 µT. (a) Calculate the rms electric field due to solar radiation. V/m (b) Calculate the average energy density of the solar component of electromagnetic radiation at this location. µJ/m3 (c) Calculate the average magnitude of the Poynting vector for the Sun's radiation. W/m2 (d) Assuming that the average magnitude of the Poynting vector for solar radiation at the surface of the Earth is Sav = 1000 W/m2, compare your result in part (c) with this value. %