Chapter 16
1. (p.497 prob.11) Particles of charges +70, +48, and -80mC are placed in a line (Fig.16-37). The center one is 0.35m from each of the others. Calculate the net force on each charge due to the other two.
2. (p.498 prob.14) Repeat Problem 13 for the case when two of the positive charges, on opposite corners, are replaced by negative charges of the same magnitude (Fig.16-39).
3. (p.498 prob.29) Determine the direction and magnitude of the electric field at the point P shown in Fig. 16-40. The two charges are separated by a distance of 2a and the point P is a distance x out on the perpendicular bisector of the line joining them Express your answers in terms of Q, x, a, and k.
4. (p.499 prob.32) Calculate the electric field at one corner of a square 1.00m on a side if one corner is occupied by a +45.0mC charge and the other three are occupied by 2.80 x 10-6-C charges.
5. (p.499 prob.34) Draw, approximately, the electric field lines about two point charges, +Q and -3Q, which are a distance l apart.