Three charged spheres are located at the positions shown in Figure 20-14. Find the total force on sphere B. (qA = 4.5µC, qB = -2.7 µC, and qC = +8.7 µC.) Distance between AB is 4.0cm, Distance between AC is 3.0cm.
1. Find the Magnitude:

2. Find the Direction (counterclockwise from the +x axis)