The diagram below shows a flat mirror reflecting
In the above image, what is represented by line D?
the mirror
the angle of reflected light
the angle at which light hits the surface of the mirror
the imaginary line used to measure angles of rays

PLEASE I NEED THE ANSWER I DONT UNDERSTAND IT

Aneutron and a proton combine to form a nucleus. why does the mass of the nucleus differ from the sum of the masses of the individual nucleons?

Which statement best describes copper? a. it has a low resistance and prevents charges from moving freely. b it has a high resistance and allows charges to move freely. c. it has a high resistance and prevents charges from moving freely. d. it has a low resistance and allows charges to move freely

Examine the nuclear reacti why is this classified as a nuclear reaction rather than a chemical reaction? it is not balanced. a new compound is formed. a change has occurred in a nucleus. a new element has been formed.