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Unformatted text preview: PHYS 0040 25 February 2009 Exam 1 Calculators may be used but no books or other written materials. Answer all five questions and show the steps leading to your answers. Credit will be given based on evidence of your understanding of the material. Be sure to express all quantities in proper units. Potentially useful information: 1 4 πǫ = 9 . × 10 9 N · m 2 / C 2 ; ǫ = 9 . × 10 12 C 2 / N · m 2 e = 1 . 6 × 10 19 C Surface area of a sphere = 4 πr 2 ; Volume of a sphere = 4 3 πr 3 Surface area of a cylinder = 2 πrL (side) + 2 πr 2 (both ends) Volume of a cylinder = πr 2 L vector F = mvectora ; vector F = q vector E KE = 1 2 mv 2 E = 1 4 πǫ q r 2 Gauss’s Law: contintegraltext vector E · d vector A = Q enc /ε U 12 = 1 4 πǫ q 1 q 2 r 12 ; V = 1 4 πǫ q r V a V b = integraltext b a vector E · d vector l U = 1 2 CV 2 ; u = ǫ 2 E 2 vector p = q vector d τ = vector r × vector F τ = vector p × vector E U = vector p · vector E Q = CV C = ǫ A d C eq, parallel = C 1 +...
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 Spring '07
 Cutts
 Physics, Electric charge, point charge

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