(a): 5 points A source of electromagnetic waves radiates with power P uniformly in all directions. At some distance d from the source, the magnetic field amplitude of the waves is Bo. What will the amplitude of the magnetic field be a distance d/4 away from the source, in terms of Bo, P, d, o, Mo, and/or c? Justify your answer (b): 5 points You shine a flashlight due north and send it through a linear polarizer so that the light is vertically polarized. Along what direction does the magnetic field of that EM wave oscillate? (North-South, East-West, or Up- Down? Defend your