P2213_HW06_AnswerKeys_Fall2008

P2213_HW06_AnswerKeys_Fall2008 - Physics 2213 HW #6 --...

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Unformatted text preview: Physics 2213 HW #6 -- Answer Keys 2kQ ; downward . a2 Fall 2008 21.96 [Half-Ring of Charge] 22.8 [Gauss's Law] (a) 452 N m 2 /C. (b) -881 N m 2 /C. (c) 22.37 [Coaxial Cable] 1 2 4 0 r -429 N m 2 /C. (d) 723 N m 2 /C. (e) -158 N m 2 /C. (f ) No. (a) a < r < b, E = 22.42 (a) (c) q. 22.54 , radially outward. (b) r > c, E = 1 2 4 0 r , radially outward. (d) . [Concentric Spherical Shells] r < a, E = 0, q a < r < b, E = 1 2 , 4 0 r b < r < c, E = 0, r > c, E = 1 q . 4 0 r 2 (d) +q. [Slab of Charge] (b) x d : E = x . 0 xd: E= d 0 #1 [Hollow Cylinder of Charge] (b) E(r) = R = for r > R or 2or E(r) = 0 for r < R #2 [Uniformly Charged Sphere] Q 2 4or Q 2 4oR (b) r>R: E(r) = (c) r < R: E(r) = Qr 3 4oR (d) Yes. Emax = E(R) = (e) 33 C . At the edge of the cloud. #3 [Charge-Induced Dipole Force] kQ R 2 3 D . Stable equilibrium when D = 0 . (a) Fon nucleus = qR 3 2 (b) D = Qx (c) Fx on q = 2kq R x 5 2 3 - 2kq R x 5 2 3 (d) Fq on atom = , it's attractive . (e) n = 5 . (f) Attractive. -1- ...
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This note was uploaded on 10/24/2008 for the course PHYS 2213 taught by Professor Perelstein,m during the Fall '07 term at Cornell.

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