Which shows the correct magnification equation?

An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?