Part A A parallel-plate capacitor is made from two plates 12.0 cm on each side and 4.50 mm apart. Half of the space between these plates contains only air, but the other half is filled with Plexiglas of dielectric constant 3.40 (Figure 1). An 18.0 V battery is connected across the plates. What is the capacitance of this combination? Express your answer with the appropriate units. HA C = Value Units Submit Request Answer Part B How much energy is stored in the capacitor? Express your answer with the appropriate units. HA U : Value Units Figure Submit Request Answer Part C + + + + + + If we remove the Plexiglas, but change nothing else, how much energy will be stored in the capacitor? Plexiglas" Air Express your answer with the appropriate units. - - - - - - HA fo ? U = Value Units