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arranged q1 to q2 to q3 a is between q1 and q2 b is between q2...

arranged q1 to q2 to q3 a is between q1 and q2 b is between q2 and q3

Let a=3 m, b=7 m, q1=2 C, q3=-3 C. What must q2 be for q1 to feel no net force.

b)

Let a=3 m, b=8 m, q1=4 C, q2=5 C, q3=-5 C. What is the magnitude of the electric field a distance c=4 m vertically above q2 i.e. located at (x,y)=(a,c)?

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