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November 22, 2014

November 22, 2014

Posted by **Stephanie13** on Friday, July 6, 2012 at 10:38pm.

- College Physics -
**Elena**, Saturday, July 7, 2012 at 5:17amThe point where electric field is zero may be either to the left from q1 or to the right from q2; y-coordinate of the ‘zero point’ is zero.

Let ‘x’ be the distance to the “zero point” located to the left from q1. Then

E1=k•q1/x², (the field deiected to the left)

E2=k•q2/(10.8+x)² ,(to the right)

E1=E2

k•q1/x²= k•q2/(10.8+x)²

1.04/ x² = 2.99/(10.8+x)².

Solve for “x”

I obtained x1=18.35 cm and x2=-15.64 cm . Check my calculations

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