Aball rolling on a skee-ball ramp must be able to rise to the height of the highest-scoring ring if the ball is to have a chance of entering the ring. the ball is released at a height of 0.18 m above the floor and the highest-scoring ring is at a height of 1.05 m above the floor. how fast must the ball be moving upon being released if the ball is to reach the height of the highest-scoring ring?

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?