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Two point charges are positioned in the x-y plane as shown in the figure. 90 80 Q2 70 60 50 y (mm) 40 30 Q1 20 10 0 0 10 20 30 40 50 60 70 80 90 x (mm) The point charges have the following values: Q1 = 31.5 nC and Q2 = 14.1 nc.Three electric charges are arranged on a straight line as shown in the figure. In the above figure, R = 1.12 m, Q1 = 1.78x10-6 C, Q2=-Q1 and Q3=-Q1. Calculate the total force on Q2. Enter your response as positive if the force is to the right and negative if the force is to the left.Four identical point charges of q = 1.44 nC are at the four corners of a square with a side length of 29.8 cm as shown in the figure. What charge Q should be placed at the center of the square to keep the other four charges in eouilibrum? Two point charges Q1 = 80.3 pic and Q2 = 16.6 JuC are fixed on the two ends of the diameter of a semi-circle with a radius of r = 22.4 cm as shown in the figure. Q A Q Q 1 2 A massless point charge Q = 3?.0 ,u.C can slide on the semicircle without any frictior At which value of the angle 6 will the point charge Q be in equilibrum