Three charges, q1 = +q, q2 = -q, and q3 = +q, are at the vertices of an equilateral triangle, as shown in FIGURE 19-40.

(a) Rank the three charges in order of increasing magnitude of the electric force they experience. Indicate ties where appropriate.

(b) Give the direction angle, u, of the net electric force experienced by charge 1. Note that u is measured counterclockwise from the positive x axis.

(c) Repeat part (b) for charge 2.

(d) Repeat part (b) for charge 3.

Figure 19-40

91 = +q is, 13 = +q 92 = -q 93 = +9