It turns out that Kevin and I had managed to screw up, so that Puzzle 8 grades had never been recorded, and consequently what was listed before as your Puzzle 8 grade was actually your Puzzle 9 grade, and so forth. I've had some questions about how to figure out what your course grade is, given all of your exam, homework, etc scores. The midterm 2 solutions in PDF format.
Midterm grades are available on-line following the usual method .
Most students picked up three or four points on problem 4, and lesser adjustments elsewhere. The high score on the exam is now a 98, the average score a 66, and the average grade between a B and B - . Everyone should note that a magnitude is always a positive number. Tutoring by Physics graduate students is offered in Engineering E111 and E112 during most weekdays 11-5. A schedule is posted near the Physics department office.