Homework Statement
The molar energy of a monatomic gas which obeys van der Waals' equation is given by
E = (3/2)RT - a/V
V volume, T temperature, a is a constant. Initially you have T1 at V1, and the gas expands adiabatically in a vacuum so that you have V2. What is T2?
Homework...
Given the term 1/|x|, and assuming in the context of the problem that a spherical coordinate basis is preferred, how can I write 1/|x| so that I can perform operations on it (gradient, etc), i.e in terms of it's unit vectors? Sorry about the vagueness of the question, but I think that's the...