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Unformatted text preview: Physics 213 Homework #2 Spring 2008 Read: Chapter 21, sections 21.5, 6 Chapter 22, intro., sections 22.1 thru 22.4 Handouts: Electric Field Line Model, Gauss' Law For study: Chap. 21: E's & P's: #21.53, 57, 62, 90, 91, 99, 103, 107 Chap. 22: Q's #Q22.1, 2, 3, 4, 5, 6, 9 E's & P's #22.1, 5, 7, 8, 11, 13, 49, 57, 63, 65 To be prepared for Wednesday-Friday, Feb. 6-8, at your 2nd weekly recitation session: #21.59 [E-Field Lines & Particle Paths] #21.61 [Infinite Line Charge E-Field Lines] #21.89 [Finite Line of Charge] #21.96 [Charge Semicircle] #21.93 [Disk of Charge] [HINT: You'll need to use the binomial expansion (1 + z) n = 1 + nz + n(n-1)z 2 /2! + ... on the square-root in (b). This power series is good (convergent) for |z| < 1.] Please add: (e) Draw electric field lines for a (+) charged disk. Use what you know about the electric field very close to the disk and very far away to make your drawing. #1. [Line Charge & Superposition Principle] In lecture, we derived expressions for the x and y-components of the electric field at point P due to a uniform line of charge with length L situated as shown. (a) What are the x and y-components of the electric field at point P when the length L of the line charge is very large (>> x), or when L in the +y-direction? What are the magnitude and direction of the electric field vector at point P? Express your answers in terms of...
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