Physics 112 Returned and reviewed diffraction test. Prepped for tomorrow's lab. Physics 122 Work through the review worksheet (p122-1-forcesproblems-alltypes.pdf).  We started to answer some of these in class (three_types_forces_solution.pdf) Test is moved to Friday, Nov. 12. Comp Sci 110 Complete unit 9 questions and assignment. Begin unit 10 notes.