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Here we can use the properties of dipole and forces due to it at a distance from it, In second part we will assume a charge at distance ra from the +ve charge and find distance and coordinates. Jor a dipole, feild at perpendicular bisector,E=(1)/(4piepsilon_(0))(qd)/((r^(2)+((d)/(2))^(2))^(3//2))here r≫d, so neglecting d//2 term, new charge{:[E=(1)/(4pi6_(0))(qd)/(gamma^(3))=8//9xx1phi^(2)alpha],[f=qE=(1)/(4piepsilon_(0))xx(q^(2)d)/(r^(3))=8.9 xx10^(9)xx((1.6 xx10^(-19))^(2)xx(0 ... See the full answer