HW _2 Brief Answers - Physics 2213 2kQ 2 a (b) = HW #2...

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Unformatted text preview: Physics 2213 2kQ 2 a (b) = HW #2 Brief Answers Spring 2010 #21.96 #1. 2 or R for r > R or and 0 for r < R #2. (a) Ex = k k k , Ey = - , E = 2 x x x , same direction at all locations y = 0 and x > 0 1 - sin 1 1 + sin 1 2 (c) Ey = - k k 1 - sin 1 k , Ex = = R R cos R 1 k , Ex = 0 H kQ 2 for r r R [ using cos 1 = 1 - sin 1 ] (d) #3. (b) Ey = Q 4 or 2= (c) Qr kQr 3= 3 for r 4 oR R kQ Q 2= 2 R 4 oR 44 C R (d) (e) ...
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