13 0 In Fig. 21-26, particle 1 of charge +1.0 µC and particle 2 of charge -3.0 µC are held at separation L = 10.0 cm on an x axis. If particle 3 of un- known charge q3 is to be located such that the net electrostatic force on it from particles 1 and 2 is zero, what must be the (a) x and (b) y coor- dinates of particle 3? -L- h Figure 21-26 Problems 13, 19,30,58, and 67.

In the figure particle 1 of charge q1 = 1.01 μC and particle 2 of charge q2 = -2.98 μC, are held at separation L = 10.1 cm on an x axis. If particle 3 of unknown charge q3 is to be located such that the net electrostatic force on it from particles 1 and 2 is zero, what must be the (a)x and (b)y coordinates of particle 3?

In the figure particle 1 of charge +q and particle 2 of charge +9q are held at separation L = 10.1 cm on an x axis. If particle 3 of charge q3 is to be located such that the three particles remain in place when released, what must be the (a) x and (b) y coordinates of particle 3 and (c) the ratio q3/q? X (a) Number i 1.35 Units cm (b) Number 0 Units cm (c) Number i 1.00 Units No units

A particle charge q = 1.6 x 107C is at the center of a spherical cavity of radius 3.3 cm in a chunk of metal. Find the magnitude of the electric field (a) 1.5 cm from the cavity center and (b) anyplace in the metal. (a) Number i Units (b) Number i Units