I'm having trouble understanding how to apply the Coulomb's law equation.(adsbygoogle = window.adsbygoogle || []).push({});

F=(1/4 x pi x epsilon) x (q1 x q2/r2)

I know this much:

F(newtons)= {1\4 x pi x [8.854 x 10 - 12 Flow / m] (electrical permittivity)}

x

charge of particle 1 x charge of particle 2/r2 (their distance squared)

Let's say we have two hypothetical particles: 1 with charge 2 C and the other 4 C, they are at a distance of 20 meters apart. I just don't see how to apply this info, would you have to place circle around the 2 particle so that they are at a diameter of 20 apart? If so, then let the radius be 10. Then what?

Thnx to anyone who helps

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# Coulomb's law

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