Two point charges are enclosed by a spherical conducting shell that has an inner and outer radius of 13.0 cm and 15.2 cm, respectively. One point charge has a charge of q1 = 9.30 μC, while the second point charge has an unknown charge q2. The conducting shell is known to have a net electric charge of −3.10 μC, but measurements find that the charge on the outer surface of the shell is 3.70 μC. Determine the charge q2 of the second point charge in units of microcoulombs. q2 = μC TOOLS ×10y