Electromagnetic energy that is invisible to the human eye is known as
a. red light.
b. blue light.
c. yellow light.
d. ultraviolet light.

During cooling, the kinetic energy of the molecules falls. why does this happen? a.the motion of the molecules increases. b. the motion of the molecules slows down. c.the van der waals forces between molecules decrease d. the forces of attraction between the molecules are overcome.