Three identical conducting spheres denoted as X, Y, and Z are separated in space. They have initial net charges of -2Q, -3Q, and 5Q, respectively. Sphere Z is touched to X and separated, then touched to Y and separated. Upon reaching electrostatic equilibrium, what is the final net charge of Y? a. 3Q/2 b. 3Q/4 c. -3Q/2 d. -30/4
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