How to calculate the force between THREE charges

151219 Like and subscribe. This is an archive, check the link in the end if you are. You've been asked to calculate the force on a charge. Easy right? Just use Coulomb's law. BUT WAIT! There are THREE charges! Ahh! This video walks you through every detail of how to go about solving this problem so you can ace that exam question.

Watch the next video here!
https://www.youtube.com/watch?v=LDJwqxpzA7A

1) The worked example question is: In the diagram (shown in the video), charges q1 = q2 = q3 = 2.3 x 10^-9 C. What is the size of the electrostatic force experienced by charge q1?
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