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Two point charges, q1=q1= 4.0×10-6 C and q2=q2= -1.0×10-6 C, are located on the x axis...

Two point charges,

q1=q1= 4.0×10-6 C and

q2=q2= -1.0×10-6 C,

are located on the x axis at x1 = -1.0 cm and

x2 = 3.0 cm.

(a) Determine the electric field at the origin.

b) Determine the x coordinate of a point on the positive x axis where the electric field is zero; i.e., a test charge placed at this point would experience no force.
(a) Determine the electric field at the origin.

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