725_Physics ProblemsTechnical Physics

725_Physics ProblemsTechnical Physics - Chapter 25 P25.47 V...

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Chapter 25 65 P25.47 Vk dq r k dx x k ds R k dx x ee R R R R == ++ zz z z all charge semicircle λλ λ 3 3 x k R Rk x R R kk k e R R e e R R e e =− + + =+ + = + πλ λπ λ π ln ln ln ln ln af a f 3 3 3 32 3 Section 25.6 Electric Potential Due to a Charged Conductor P25.48 Substituting given values into V kq r e = 750 10 899 10 0300 3 9 . . . ×= ×⋅ V Nm C m 22 ej q . Substituting q 250 10 7 . C , N e = × × −− 156 10 7 19 12 . . C 1.60 10 C electrons . P25.49 (a) E = 0 ; V R e ×× = 260 10 0140 167 96 .. . . e j MV (b) E r e = 2 2 0200
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