You are on a building with a snowball. you see your favorite physics teacher walking by about 10 m away from you. how fast must you throw the snow ball to hit him (assume you hit him on the foot and you throw the snow ball horizontally from a height of 5.5m)

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?