Question

(a) Give an expression for the Coulomb force between two charged particles, defining all terms. (b)...

(a) Give an expression for the Coulomb force between two charged particles, defining all terms.


(b) Charge q2 initially lies a distance r to the right of q1. The Coulomb force on charge q2 is F. Where must q2 be moved so that the force on q1 is now twice as strong and in the opposite direction (i.e. F' = −2F)?

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