Three point charges are arranged along the x-axis Charge q2 = −4.50 nC is located at x = 0.200 m, and q2 = +2.50 nC is at x = −0.300 m. A positive point charge q3 islocated at the origin. (a) What must the value of q3 be for the net force on this point charge to have magnitude 4.00 µ.N? (b) What is the direction of the net force on q3? (c) Where along the x-axis can q3 be placed and the net force on it be zero, other than the trivial answers of x = + ∞ and x = −∞?
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