If u answer i will put u as brainiest answer and give u a u
at the earth's surface, warm air expands and rises, leaving behind what is known as an area of
cold air is dense and sinks to the surface to create what is known as an area of

answer choices:
low pressure
high pressure
condution
convection
if u answer i will put u as brainiest answer and give u a u

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?