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

*ignore the given numbers in the image, mine is different*

My numbers are:

Q1: 1nC

Q2: 8nC

Q3: -6nC

2. Relevant equations

[tex]

E = \frac{kq}{r^2} * \hat{r}

[/tex]

3. The attempt at a solution

I only did (a1) so far. I know (a2) involves the exact same process (find r and plug it into the formula), except I don't know how to express it in coordinates since they're not on the same axes.

r = <? , ? , ?>

If i know r I think I could solve the problem.

thanks

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# Homework Help: Electric fields by point charges

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