Pls help

Problem 3 EM wave in a solenoid An N -turn solenoid of radius a and length h has a decreasing current I (t) = I, - kt, where k is a constant, in the direction shown in the figure 2. k I(t) N turns h I(t) Figure 2 a) Find the magnitude and direction of the magnetic field inside the solenoid b) Find the magnitude and direction of the electric field at the point D c) Find the magnitude and direction of the Poynting vector at the point D Problem 4 Polarization of Light A beam of unpolarized light of intensity /, passes through a series of ideal polarizing filters with their polarizing directions turned to various angles as shown in figure below. (a) What is the light intensity (in terms of 1.) at points A, B and C? (b) If we remove the middle filter, what will be the light intensity at point C? Unpolarized