An ideal LC circuit consists of an inductor of inductance \(L\) and a parallel-plate capacitor filled completely with a dielectric slab of dielectric constant \(\kappa > 1\). The circuit oscillates with an initial angular frequency \(\omega_0\) and a maximum capacitor charge \(Q_0\). At the exact instant when the current in the circuit reaches its maximum value, the dielectric slab is instantaneously pulled out of the capacitor without altering the charge on the plates at that instant. What are the new angular frequency \(\omega'\) of oscillation and the new maximum charge \(Q_{\max}'\) on the capacitor during subsequent oscillations?