1. Unpolarized light with intensity 440 W/m2 passes first through a polarizing filter with its axis vertical, then through a polarizing filter with its axis 20.0 degrees from vertical. 2. Malus's Law 3. Ok, the intensity after going through the first polarizer should be 1/2 the original. This, after the second polarizer, I = 220*cos20) = 207 W/m2, which is incorrect.