PHYS 135 : P135Day42-101129.pdf
Document Summary
Physics 135 day 40 november 22, 2010. Exam 3 : covering chapters 9 through 12 in rooms 207 & 203. Section 1: thursday, december 9, 2:45 4:45 pm. Section 2: wednesday, december 8, 2:45 4:45 pm. Ch12 hw4 has been extended until 11:59 pm on tuesday, nov. 30. Today: the boltzmann distribution, exam 3 preview/review, course evaluation. This is a problem that can be attacked by applying the boltzmann distribution. The b-distribution is relevant if the hydrogen atom in question is in thermal equilibrium with the rest of the sun"s surface atoms, because the rest of those atoms form a very large reservoir of thermal energy. Ideal gas: individual atoms/molecules do not interact : what does interact mean in this context? (interact can mean exchange energy and momentum, which happens in elastic collisions) No forces of interaction that would lead to a potential energy of interaction, except hard sphere scattering .
