25 W Mar 18 B2.pdf #2-3    https://youtu.be/45Z7WSnVFgk   https://youtu.be/A9XZJDwkkww   
exam 2 (postponed, perhaps to Mar 23)
see if you can find whats required for online meeting with zoom (webcam, mic often part of laptops)
Given that perhaps not all will be able to zoom, I'm not sure physics content will happen there
(you can use a phone to get audio, but clearly video is also required for physics content).

Note that 2013/lectures/17*
covers much of the same material