Part A - Practice Problem: Now we will consider a two-dimensional arrangement of charges (Figure 1). A point charge q1 = 2.0 uC is In the same example, what is the magnitude of the net force on q3 if q1 = 2.0 uC, as in the example, but 92 = -3.0uC? located on the positive y axis at y = 0.30 m, and an identical charge q2 is at the origin. Find the magnitude Express your answer in newtons. and direction of the total force that these two charges exert on a third charge q3 = 4.0 uC that is on the positive x axis at x = 0.40 m. ? F = N Figure 1 of 3 Submit Request Answer +91= 20 MC Part B - Practice Problem: Three point charges arranged at the vertices of a right triangle 15 In the same example, what is the direction of the force on 93 if q1 - 2.0 uC, as in the example, but 0.30 m 92 -3.0uC? 92 = 2.0 MC OT 93 = 4.0 MC Express your answer in degrees below the -x axis. > X IVO AEQ ? 23 = 0.40 m Q = below the -x axis