Heat energy can be transferred from a source to a receiver by I. radiation.
II. convection.
III. conduction.
A.
I, II, and III
B.
II only
C.
I only
D.
III only

In which phase(s) do the molecules take the shape of the container?

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.

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