phys quiz group 1 soln

phys quiz group 1 soln - 1302.300 Group Quiz 1 grading...

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1302.300 Group Quiz 1 grading checklist Feb5, 2009 a) - ------------------------- [5 points] b) +Q -Q (0,0,0) L/2 -L/2 z 12 2 22 8 11 () kQ kQ kQ E EE z z z L LL =+ = = GG G ± ±± Magnitude correct: ---------------------------- [4points] Direction correct: ----------------------------- [1 point]
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c) +Q -Q (0,0,0) L/2 -L/2 z x E 1 E 2 θ (x,0,0) 23 2 2 2 2 2 2 2 2 (,0 ,0 ) 2 s i n () 4 4 4 z L kQ kQL Ex E L L L x x x θ == = + + + E Tot is on -z direction. Magnitude & direction correct: -------------------- [4 points] When 3 z kQL xL E x →− ± Limit situation:
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phys quiz group 1 soln - 1302.300 Group Quiz 1 grading...

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