Two charges, ± q, are on parallel trajectories a distance d apart, moving with equal spe...

Two charges, ± q, are on parallel trajectories a distance d apart, moving with equal speeds v in opposite directions. We’re interested in the force on +q due to −q at the instant they cross (Fig. 12.42). Fill in the following table, doing all the consistency checks you can think of as you go along.

Figure 12.42