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

+1.5x10^-6C, +3.0x10^-6C, 0.20m

2. Relevant equations

Two charges of +1.5x10^-6C and +3.0x10^-6C are 0.20m apart. Where is the electric field between them equal to zero?

3. The attempt at a solution

= (9.0x10^9)(1.5x10^-6C) + (9.0x10^9)(3.0x10^-6C)

x^2 (0.2-x)^2

1.5(0.2-x)^2=3.0(x^2)

(0.2-x)^2=2(x^2)

0.4-0.2x-0.2x+x^2=2x^2

-x^2-0.4+0.04=0

The answers you'll get are -0.48 and 0.08. The answer in the text is 1.2x10^-1m and you can get it if it's 0.06 instead of 0.04. I looked over my work but I can't find where I went wrong. =(

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# Homework Help: Field strength!

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