A parallel-plate capacitor having square plates 4.50 cm on each side and 8 millimeter apart is located in series with an ac source of angular frequency 620 rad/s and voltage amplitude 22 Volt, a 75 ohm resistor, and an ideal solenoid that is 9 centimeter long, has a circular cross section 0.5 centimeter in diameter, and carries 130 coils per centimeter. Obtain the resonance angular frequency of this circuit?