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

A point charge of +2.0 microC is separated from a second point charge of -0.35 microC by a distance of 4.0 x10-4 m. Calculate the size of the force that each charge exerts on the other and its direction. (Assume 1/4 pi ε0 = 9.0 x109 m F-1)

2. Relevant equations

F = 1/(4 pi ε0) x (q1 x q2 / r-squared)

3. The attempt at a solution

I get an answer of -3.9 x 10 (power of 4) N

The question asks for the direction. So by stating the -'ve before the 3.9 am I indicating the direction?

Or should I state the answer is +3.9 x 10 (power of 4) N in a particular direction?

Thank you

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# Homework Help: Size of Force between two Point Charges

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