Asingle polarizer will stop of the incoming light. less than 50% 50% more than 50% but less than 100% 100%

So we want to know how much light will a single polarizer stop. Since the polarizer intensity formula is I=I0cos^2(a), where I is the intensity, I0 is the initial intensity and a is the angle of the light's initial polarization direction and the axis of the polarizer. Also, the average of cos^2a is 1/2 so I=(1/12)*I0. and I/I0=1/2 or 50%. So the light that passes trough one polarizer has 50% of the initial intensity. And the correct answer is 50%.

Jet streams are relatively narrow bands of strong wind in the upper levels of the atmosphere. the winds blow from west to east in jet streams but the flow often shifts to the north and south. jet streams follow the boundaries between hot and cold air. the earth's rotation is responsible for the jet stream as well.

Ibelieve the correct answer would be c.