If a 20 cm diameter wheel travelled 100 cm while turning, how far will the outside of a 2 cm diameter axle have travelled?

Distinguish between a transverse wave and a longitudinal wave.

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

More solar radiation is absorbed by earth’s surface than by