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Introductory Physics Homework Help
Net Electric Field Between Two Point Charges
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[QUOTE="Rachelbot12, post: 4986455"] [h2]Homework Statement [/h2] Two point charges q1 = 4.90×10-5[I] C[/I] and q2 = 2.45×10-4[I] C[/I] are separated by a distance d = 0.10[I] m[/I]. Compute their net electric field E (x) as a function of x for the following positive and negative values of x, taking E to be positive when the vector E points to the right and negative when E points to the left.What is E(-0.100)?[B][/B][h2]Homework Equations[/h2] I tried the following equations, but I couldn't get any to work for any of the values of x: E(x<0)= -k [(Q1/x^2)+(Q2/(d-x)^2] E(0<x<d)= k [(Q1/x^2)-(Q2/(d-x)^2] E(d<x)= k [(Q1/x^2)+(Q2/(d-x)^2] [h2]The Attempt at a Solution[/h2] E(-0.100)= -9e9 [(4.90e-5/-0.01)+(2.45e4/0.04)] = -1.1e7 N/C This is being marked incorrect and I don't know what I'm doing wrong. I've attempted multiple times with no luck. [/QUOTE]
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Net Electric Field Between Two Point Charges
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