A point charge of q = +4.1 C is placed at the origin (x = 0) of a coordinate system, and another charge of q2 = 1.4 C is placed on the x-axis at x = 2.1 m. Where on the x-axis (position x3) can a third charge be placed in meters so that the net force on it is zero? Hint: The third charge can be positive or negative and its value is arbitrary. Draw a free body diagram. 5.29