ch22-p022 - 22(a We use the usual notation for the linear...

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L = (0.0400 m)(0.698 rad) = 0.0279 m. With q = 300(1.602 × 10 19 C), we obtain λ = 1.72 × 10 15 C/m. (b) We consider the same charge distributed over an area A = π r 2 = π (0.0200 m) 2 and obtain σ = q/A = 3.82 × 10 14 C/m². (c) Now the area is four times larger than in the previous part ( A sphere = 4 π r 2 ) and thus obtain an answer that is one-fourth as big: σ = q/A sphere
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This note was uploaded on 06/07/2010 for the course PHYS 344 taught by Professor Bb during the Spring '10 term at The Petroleum Institute.

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