nagle_phys2020_fa07_lecture13

# nagle_phys2020_fa07_lecture13 - 1 28 • Exam solutions...

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Unformatted text preview: 1 28 • Exam solutions posted on the web page (under Exam Info). • Hope to have grades mailed/posted later by tommorow. • CAPA #5 due on Friday • Reading on circuits and circuit components – Chapter 18. 29 Clicker Question I thought the exam was: A) Too Easy B) Just Right C) Too Hard I thought the exam was: A) Fair (in that it tested material I knew I should know) B) Unfair (in that it tested material I did not expect to have to know) 30 Exam #1 Results: Mean = 71 Median = 75 Standard Dev. = 16 We will try to post the scores on CULearn soon. No official letter grades are given for each exam, but to give a very rough idea: 90-100 A range 70-85 B range 55-65 C range <= 50 D,F range 31 Dielectric Material – what if the gap between the capacitor plates is not empty? +Q-Q r 2 4 1 | | r QQ F πε + = v +Q-Q +q-q 3 2 ) 2 / ( 2 1 4 1 4 1 | | r qqd r QQ F πε πε − + = v Weakens the force (screening)!...
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## This note was uploaded on 02/27/2008 for the course PHYS 2020 taught by Professor Dubson during the Fall '06 term at Colorado.

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nagle_phys2020_fa07_lecture13 - 1 28 • Exam solutions...

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