Dear Physics 129L students,

I graded homework 8.
I understand that it was very hard (by design).
Many of you did quite well on it, exceeding my expectations.
Good job.

The solutions are posted.

I then calculated a "combined" numerical score for each
student as the average of the best 7 homework scores out 
of 8.  I then assigned letter grades as follows:

>97	A+
>90	A
>86	A-
>82	B+
>77	B 
>73	B-
>68	C+
>60	C
>55	C-
>50	D+
>45	D+

In some cases I rounded up, when the numerical score 
was close to the letter grade boundary (*)

If you find a problem, come see me.
The first week of Spring quarter I will be available 
Monday and Tuesday.  Then I will go to CERN for 10 days,
so you should try to catch me before I leave.
It is probably best to make an appointment.
Email brittany@physics.ucsb.edu for a 15 minute appointment,
(she has my schedule).

Have a great spring break.

C.


(*) If I did not round up your score, it was because 
    I decided that it was not close enough to the 
    boundary.  Yes, the boundaries are arbitrary.
    Please do not argue....