Physics question, show work for brainliest : )

Although light from the sun appears white, it is actually made up of a lot of different colors. this portion of the electromagnetic spectrum, we call white light is referred to as within the electromagnetic spectrum.

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.