Evaluations are today

If you were planning to stay home this morning ... we are doing course evaluations during the second half of class. FYI.

Sigh.

Snipped from an article on wired.com:

Toyota's bland bar graph makes saving gas about as much fun as a physics lecture.

Sigh. Having attended my fair share of physics lectures, they do make a good point ... you can only aspire to be an occasional exception to the rule.

HW 10

Yes, the spring break is over. Sigh.

Homework 10 is out, first problems are due Tuesday following the break. The first problems are more angular momentum and torque, after that you will need to read Ch. 13 in your text.

Problem 10.42

Right .... so I screwed up a unit conversion myself.

The numerical answer to 10.42a should be 8.32e-6, not 8.32e-3.

(I missed that the mass was in mg, not g ... my bad.)

Recent episodes of FAIL

So, here's how it is. Thanks to weather-related FAIL today, I'm stuck in Miami for another day. I had hoped to get back late tonight, go grab the exams tomorrow morning, and have them graded and back by Tuesday.

At the earliest, I'll now be back in town Saturday afternoon. If all goes well, I can still get the exams graded by Tuesday ... I will try. At the very least, I will get you solutions to the exam by Tuesday, one way or another. I really did choose all the problems there for a reason, and I want you to see how they are worked out while the ideas are still fresh in your mind.

Typo 9.45

There is a typo in the numerical answer in the back of the book. It should be +45, not -45.

Draw the initial velocity vectors, and it will be clear why (I think) even if your math doesn't jive.

Gallalee has its own episode of FAIL

Due to the renovations on the restrooms. The water in Gallalee Hall will be shut off today, January 27th. The faculty, staff and students will need to find alternatives today and maybe the rest of the week.

I'm not kidding, I only just found out this morning myself. Take your restroom breaks before you head over ...