When the distance from one object to another is changing the object is said to be in

Temperature and kinetic energy are proportional. a) adirectly b) directly c) indirectly

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

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