(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

At a particular moment, three small charged balls, one negative and two positive,are located as shown in Figure 13.46. Q1 = 3 nC, Q2 = 7 nC, and Q3 = -6 nC.

What is the electric field at the location of Q1, due to Q2?

2. Relevant equations

[tex]\vec E = q1q2\hat{r} / 4\pi\varepsilon r^2[/tex]

3. The attempt at a solution

r = <0, .04, 0> m

rmag = .04

rhat = <0, 1, 0>

E = [3e-9(7e-9)(9e9)] / .0016

Which gives me:

E = <0, 1.18125e-4, 0>

What am I doing wrong here? At first I figured I missed a negative, so I tried making my answer negative, but apparently that's not the case.

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# Homework Help: Electric Field Location Help

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