four_point_charges - Four Point Charges q 7 C Given: Find:...

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Unformatted text preview: Four Point Charges q 7 C Given: Find: Ex ? a 4m Ey ? c 0.008m m 5 x10 8 kg V ? v ? Q 0.75C W ? Solutions a.) To find E x and E y we can use the following formula: E q top row left to right 4 0 r 2 Ex Ex 4q cos 45 4 0 a 2 a 4q cos 45 4 0 2a 2 2 2 4q cos 45 4 0 4q cos 45 4 0 2a 2 a q cos 45 4 4 2 1 Ex 8 0 a 2 2 a 2 2 bottom row left to right 2q cos 45 2q cos 45 4 0 2a 2 4 0 a 2 a 2 1q cos 45 4 0 2a 2 2 1q cos 45 4 0 a 2 a2 2 Ey Ex b.) 4q sin 45 4 0 a 2 a 2 2 4q sin 45 4 0 a 2 a 2 2 2q sin 45 4 0 a 2 a 2 2 1q sin 45 4 0 q sin 45 4 4 2 1 8 0 a 2 To find V we can use the following formula: V V V q 4 0 r 4q 4 0 a 2 a 2 q 4 0 a 2 a 2 4q 4 0 a 2 a 2 4 4 2 1 2q 4 0 a 2 a 2 1q 4 0 a 2 a 2 a 2 a2 2 c.) To find v we can use the following formula: U VQ 2 v v d.) U q 4 0 a 2 a 2 m 2 mv 2 VQ 4 4 2 1Q 2m 0 a 2 a 2 2m 0 a 2 a 2 To find W we can use the following formula: W q 4 0 a a 2 qQ4 4 2 1 4 0 a 2 a 2 2 4 4 2 1Q qQ4 4 2 1 qQ4 4 2 1 W VQ 2 mv 2 v 2VQ m ...
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This note was uploaded on 01/26/2012 for the course PHYSICS 211 taught by Professor Selig during the Fall '10 term at University of Illinois, Urbana Champaign.

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four_point_charges - Four Point Charges q 7 C Given: Find:...

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