At high noon, a sinusoidal electromagnetic wave is heading straight toward san diego. at a 12: 00 sharp, the electric field at a certain location is 700 n/c directed south. a) what is the magnitude and direction of the magnetic field at this location at this instant? b) if it takes 1.0 x 10^-15 seconds for the fields at this location to return to the values described above, what is the wavelength of this wave? c) does this wave fall within the visible range? d) at what rate does this wave deliver energy to a patch of earth of area 2 m2, assuming all is absorbed?