When humans look at the sky, it appears blue, but the sun appears yellow. what causes this phenomenon?

a. the atmosphere creates blue light and the sun creates yellow light.
b. the atmosphere absorbs yellow light more than blue light.
c. the atmosphere scatters blue light more than yellow light.
d. the atmosphere reflects all of the colors of light.

How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=