Assume that all four h-r diagrams below represent a star in different stages of its life, after it starts to fuse hydrogen in its core. rank the hr diagrams based on when each stage occurs, from first to last.

a. star in the sequence
b. a little outside
c. more outside
d. then below the line

How are calculation for velocity and speed different

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic