When the velocity of a moving object stays the same, it has a what speed

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?

Anybody wanna ? (picture included? )