A dipole lies on the y axis and consists of an electron at y1 = 0.70nm and a proton at y2 = -0.70nm .
A) Find the electric field midway between the two charges.
B) Find the electric field at the point x = -2.5nm , y = 0.
C) Find the electric field at the point x = -20nm , y = 0.
I have some trouble with finding the X, Y .