8/05 You should skip part (d) in Wolfson 34: 71 in tonight's HW. We did not cover EM wave momentum. 8/03 Problem H36: 17 was originally left off the online problem list for July 30 - Aug 5. It has now been added. 7/30 There is a misprint in the HW list for Mon Aug 2. H 31:11,12 should be H 33:11,12. 7/30 The solutions for test 3 are now available at the Noble Library Copy Center. 7/25 The solutions for test 2 are now available at the Noble Library Copy Center. 7/17 The solutions for test 1 are now available at the Noble Library Copy Center. 7/16 The answer originally given for H27:43(a) uses Halliday's value for kappa of Pyrex (4.7). Using Wolfson's value of kappa for Pyrex (5.6) yeilds a capacitance of 863 pF. 7/15 The answer to Wolfson Chapter 25 problem 58(a) was originally posted incorrectly. The correction was made at 1 PM TH 7/15. The correct answer is 288 kV. 7/14 Comment on HW problem H26:20 -- Use of "k" in the original statement of this problem results in confusion with the electrostatic value of k. So I have changed that "k" to a "c", and the answers on the even-numbered answers page are given in terms of that "c". 7/09 In the HW for July 12, please drop problem 26:5 and add problem 26:3. Also, I STILL did not give complete info for problem P24:55. In order to get the numerical answers you need to know the value of y at the top and bottom of the cube. y = 0 at the bottom, and thus y = 2 m at the top of the cube. This is a valuable exercise in the use of Gauss' Law, so - in spite of my awkward presentation - I hope that everyone will work through it completely. 7/08 In problem P24:55, the figure reference was originally wrong. It was corrected at 10:00 AM Thur Jul 08. 7/07 The Old Tests, with solutions, are now available in the Noble Library Copy Center. 7/06 Problem P 23:25 was initially left off of the Online Problems list for July 6 - 12. It was added July 6 at 2:00 PM.