What is the si unit for capacitance?

What are the factors that affect the resistance of a wire?

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

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?