Explain what happens at the atomic level to cause the colors to be seen?

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

Consider the story you just read. all but one of the choices below indicate that something is living.

Which of the following words describe the reality that the universe looks the same from various perspective