Which occurrence would contradict the big bang theory?
(A. The percentage of carbon dioxide in Earth’s atmosphere increases. ) (B. Scientists discover that 99% of the universe’s mass is hydrogen.)
(C. A radio telescope detects microwave radiation in space. )
(D. Distant galaxies move progressively farther away from Earth.)

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?