What subatomic particle gives off visible light when it drops back down to a lower energy state?
a) proton
b) neutron
c) electron

Determine the mass of fuel required for the expected energy consumption in the united states for the next ten years. energy use per person per year in the united states = 3.5 x 1011joules base calculations on current population of 310,000,000.

Which term refers to a property that depends only on the amount of a substance? ©@

How does the motion of particles in a gas change as the gas cools