test1spring2007 - PHY 207 SPRING 2007 Prof. Massimiliano...

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1 PHY 207 – SPRING 2007 Prof. Massimiliano Galeazzi Midterm #1 February 14, 2007 Problem #1 NAME: ________________ SIGNATURE: ________________ Problem #2 UM ID: ________________ Problem #3 __________ T o t a l ________________________________________________________________________ Some useful relations: r r q E o ) r 2 4 1 πε = , = i i i o r r q E ) r 2 4 1 , = r r dq E o ) r 2 4 1 , E q F o v r = Dipole: E p r r r × = τ , E p U r r = Gauss Law: = A d E E r v φ = o encl Q ε r q V o 4 1 = , = i i o r q V 4 1 , = r dq V o 4 1 , k z V j y V i x V V E ˆ ˆ ˆ = = r r , V q U = , = b a ab l d E V r r dV dA dl dq r A rL A dr r dV r V r A cir cyl sph sph sph ρ σ λ π = = = = = = = = 2 2 3 3 4 2 , 2 4 , , 4
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2 Problem #1 Four point charges are placed at the corners of a square of side 2 L . The value of the charges is either +q or –q , as shown in the figure. a)
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This note was uploaded on 04/26/2008 for the course PHY 207 taught by Professor Lab during the Spring '08 term at University of Miami.

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test1spring2007 - PHY 207 SPRING 2007 Prof. Massimiliano...

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