Avessel having a volume of 100 ft^3 contains 1ft^3 of saturated water vapor at 14.7 lb/in^2. heat is transferred until the vessel is filled with saturated vapor. determine the heat transfer for this process

A6.0-μf air-filled capacitor is connected across a 100-v voltage source. after the source fully charges the capacitor, the capacitor is immersed in transformer oil (of dielectric constant 4.5). how much additional charge flows from the voltage source, which remained connected during the process?