(a) Using Eq. 25.5, determine whether the electrostatic work done on particle 2 along path CB in Figure 25.15 is positive, negative, or zero.

(b) Does moving the particle carrying charge \(q_{2}\) along path CB involve positive, negative, or zero mechanical work done on the particle? Assume the particle begins and ends at rest; verify the consistency of your answer with part \(a\).

(c) By how much does the electric potential energy of the two charged particles change as particle 2 is moved from \(\mathrm{C}\) to \(\mathrm{B}\) ? Is this change positive, negative, or zero?

W12 9192 == (25.5) 4TE0 12,12,f.