Problem A3:
Two point objects lie in the x-y plane. One object with charge n2q lies on the
y-axis a distance d from the origin. The second object has a charge of n1q, lies
on the x-axis, and is a distance 2d from the
origin. See the figure above. What is the integer value for n3 in the expression for the
magnitude of the electric field at the origin?
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