A roller coaster is stationary at the top of a ramp. What is the kinetic and potential energy of the roller coaster?

A. potential energy: high
kinetic energy: zero

B. potential energy: zero
kinetic energy: zero

C. potential energy: high
kinetic energy: high

D. potential energy: zero
kinetic energy: high

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?