A2 kg bowling bowl is 1 meter off the ground on a post when it falls. just before it reaches the ground, it is travelling 4.4 m/s. assuming there is no air resistance, which of the following statements is true 1. the mechanical energy is conserved 2. the initial potential energy is less than the final kinetic energy 3. the initial potential energy is greater than the final kinetic energy 4. the mechanical energy is not conserved

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?