A parallel-plate capacitor having square plates 4.50cm on each side and 8.00mm apart is placed in series with an ac source of angular frequency 620rad/s and voltage amplitude 22.0V , a 75.0Ω resistor, and an ideal solenoid that is 9.00cm long, has a circular cross section 0.500cm in diameter, and carries 130 coils per centimeter.
What is the resonance angular frequency of this circuit?