# SelectedAnswers2 - E r = 1 69 × 10 3 V/m Problem 72(a V...

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Physics 208, Assignment 2, Selected Answers, 1/30/09, RT A Few Numerical Answers to Assignment 2 1(c) v is unchanged. 2(c) V ( r ) = kQ/c for r < b . 3(d) σ = 0 . 94 × 10 3 C / m 2 . 4(a) σ = Q/A . 5(d) Voltage is unchanged. Answers to Some Even-Numbered Text Problems Chapter 24. Problem 4(a): V B - V A = 2 . 46 V. Problem 12(a): V A - V B = - 4 . 5 × 10 3 V. Problem 16: Potential vanishes only at inFnity. Problem 34: E = ( - 39 V / m) ˆ ı . Problem 36: | E | = 6 . 7 × 10 2 V/m. Problem 46: W = 0. Problem 60: Q = - 1 . 20 × 10 5 C. Problem 62: potential at center is 400 V. Problem 66(a):
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Unformatted text preview: E ( r ) = 1 . 69 × 10 3 V/m. Problem 72(a): V S-V B = 3 . 6 × 10 3 V. Chapter 25. Problem 2: q = 3 . × 10 − 3 C Problem 4(a): d = 8 . 85 × 10 − 12 m. Problem 8: C eq . = 7 . 33 μ ±. Problem 30(a): C = 35 p±. Problem 32: U = 9 . 96 × 10 − 8 J. Problem 42: κ = 4 . 0. Problem 44: C 1 = 6 . 64 × 10 − 11 ±. Problem 48: C = 8 . 41 × 10 − 12 ±. Problem 74(a): C ′ = 0 . 708 p±. 1...
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