Three point charges are arranged along the x axis. Charge q1=-4 nC is located at x=0.240m and charge q2=2.10 nC is at x=-0.350m. A positive point charge q3 is located at the origin.
Part A: What must the value of q3 be for the net force on this point charge to have a magnitude of 4.30?N?
Part B: What is the direction of the net force on q3?
Part 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=???