Lect01 - http/online.physics.uiuc.edu/courses/phys212...

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Unformatted text preview: http://online.physics.uiuc.edu/courses/phys212 ! ' 01 " # % % $ % & ( ) $ * + &+ #& $ #" $ $ , ! 03 89 http://online.physics.uiuc.edu/courses/phys212 ( 2 2 2 4 ) ( ! # # # ! 3 . /0 + ( + 1 3$ ! 3 3$ # ! # ( ( ! # # $ 6 # 3 3 # 3 ) $ $ $ 5 # ) 2 4 )$ 2 ) . 7 7 ! # 6 : 2 2 : # # 05 ! % 3 ( $ # - 1 ! ) ! # Prelectures: 50 Prelectures: Checkpoints: 25 Lecture participation: 25 participation: Your top 22 HW/Quiz scores determine your grade out of 250. Prelectures + Preflights + Lectures 14 Homework + 10 Quizzes Labs Hour exams (3 x 100 each) Final Exam 100 250 150 300 200 Bonus Points: You can earn up to 1 extra bonus point in every lecture (for a maximum of 25 bonus points for the semester) by getting the right answers to all of the clicker questions. At the end of the semester your lecture bonus points are added to your HW/Quiz score (250 max). You can make up for several bad quizzes by answering correctly in class. 06 ; =, 7, 30 # Viewer Non-Viewer $ $ )> 25 Data from last year's first exam 20 15 10 5 0 43 48 52 57 61 65 70 74 78 83 87 91 96 100 Exam Score ! ! 4 ! 07 ? 8 8 ( 5@ A B-A ) $ ) $ < 4 )4 2 1 ! : . ) 3 ) D % % : 3 ) ! E DF 8 ! E> " C + 2 2 2 G . F H" # 3 ! 3% ! $ <$ % 5 & 2 G # ! 1 0 $ I 0 F I0 '' 44 0 ) 09 B 0 0 F ! ), 1 ! 3 points 9 # 3J 1.0 performance Your answer has been judged correct; the exact answer is: 1.0078643271894E+00 1.0 1.0 11 5 1 ! 3, : ' # 3 These questions serve as a test of your understanding of the questions posed as immediate feedback. $ ' 11 , + 90 F After first deadline Delayed Feedback questions turn into "immediate feedback questions". 80% credit can be questions" obtained by answering these questions correctly before the second deadline. K + ) $ $ ) J #" ) ( !, $ $ $ $ J J F r ! # J J J 11 q1q2 2 r ) ) ) 0 $$ 3 ) , ) $ @ $ $ J J J ) 4 3 ! # # ! , 8 $ . 8 $ # ! # $ 7 7& 7 4& +& 13 4 9 ! ! J $ % ) # ) # ) L L L L L L L L 14 + 0 #" # ! F1,2 3 D# 8 E& F1,2 ^ r12 $ 9 ) kq1q2 ^ r1,2 2 r1,2 ( $ ) ! J ( # ) # r1,2 ( # J $$ $$ J F1,2 ) ) & 9 ) ) ! ) J # ) & F1,2 17 r1,2 - $ ,+ 2 ! $ $ $ $ # @ $ $ $ #' ( $ k= 9 x 109 N m2 / C2 electron charge = 1.6 x 10-19 Coulombs NA = 6.02 x 1023 ! 7& 7 ( 4& $ ( # > 17 ; $ ,+ 2 ! $ $ $ $ # @ $ $ $ #' ( $ k= 9 x 109 N m2 / C2 electron charge = 1.6 x 10-19 Coulombs NA = 6.02 x 1023 $ $ ! ) $ ! ) $$ M ) ) MK5 # I &> ! 7& $ $ ) )& 4& # 3 3) x g& +& 3 @ ; 3) x g& :& 7 (108 kg x g) &G ( @ ; 3) x g& 22 < Checkpoint 1 24 C $ 9 )( ) N ) , ! ( $ ) $ , J '; ' ' ' ' ''; J '- J; J- F1 28 F2,1 F3,1 F4,1 ... B $ $$ 7 & O' O 4 & O' O + & O' O :& F $ ' J 7+ ) ) J J J; J30 5 ) J '; ' # 5@ . ) J '; ' , J '- ' ' J '- J; ' ' ''; J; ' ' ''; J- J- F1 33 F2,1 F3,1 F4,1 ... F1 F2,1 F3,1 F4,1 ... K ) D E + 3 #' $ ) & @ + 3$ +Q +Q Compare the magnitude of the net force on q in the two cases. A) B) C) D) |F1 | > |F2| |F1 | = |F2| |F1 |< |F2| Depends on sign of q q ' -Q q ' M@ +Q Case 1 Case 2 33 + ' # $ ) ! 7 $ $ )! ! $ ) = ) ! 3$ y 3q x P 7 & ' Q@ => 4& ' M @ +& ' R @ Q q q q 41 + ' # $ 7 ( ) ! 7 $ $ )! ! ) ) $ ) = ) $ ! # 3$ 3q Q y x q q q ( 7 & ' Q@ 4& ' M @ => +& ' R @ 47 - 2 : 2 4 2 # # ) S $ C ! 3 + 3$ ; ...
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This document was uploaded on 03/08/2012.

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