A parallel-plate capacitor having square plates 4.50cmcm on each side and 8.00mmmm apart is placed in series with an ac source of angular frequency 650radrad/s and voltage amplitude 22.5VV , a 75.0%u03A9 resistor, and an ideal solenoid that is 9.00cmcm long, has a circular cross section 0.500cmcm in diameter, and carries 125 coils per centimeter.and carries 125 coils per centimeter.
What is the resonance angular frequency of this circuit?