What is the photoelectric effect?
a. electricity used to produce light from metals
b. electricity produced when light hits metal
c. electricity produced when electrons hit metal
d. electricity produced when metal is hit with atoms
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In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible?

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

Which three statements represent the benefits of performing experiments using computer simulations?