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

A charged particle A exerts a force of 2.62microNewtons to the right on a charged particle B when the particles are 13.7 mm apart. Particle B moves straight away from A to make the distance between them 17.7mm. What vector force does it then exert on A?

2. Relevant equations

I know its easy, very, but for the love of god I can't figure this out.

3. The attempt at a solution

I know that they are both positive particles, so im assuming both are +1.60x10^-19c.

Also I believe we use F= (K q1 q2/r^2). Ive tried inserting different things in to the formula but none of it gives me the answer im looking for which is 1.57micronewtons

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# Homework Help: Coulumbs Force question

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