[问答题]
An air-filled parallel-plate capacitor has capl, l-k89t jyqnacitanpq xj4ud,: mhll 2,yy )ai*xz9(kyd s0ce $C_0$. If two identically sized dielectric slabs of dielectric constants $K_1$ and $K_2$ are inserted as shown in Fig. 19–64, what is the new capacitance? [Hint: treat this as two capacitors in combination.]