Each object is composed of identical thin sticks of uniformly distributed mass 8.11 kg and length 0.241 m. What are the moments of inertia A , B , C , and D of the objects about a rotation axis perpendicular to the screen and passing through the black dot displayed on each object?

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?