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Escaping field lines Charges 2q and −q are located on the x-axis at x = 0...

Escaping field lines Charges 2q and −q are located on the x-axis at x = 0 and x = a, respectively.(a) Find the point on the x-axis where the electric field is zero, and make a rough sketch of some field lines.(b) You should find that some of the field lines that start on the 2q charge end up on the −q charge, while others head off to infinity. Consider the field lines that form the cutoff between these two cases. At what angle (with respect to thex-axis) do these lines leave the 2q charge?

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