Pls help

Q = 10 MC + Q. ++ C = 10 nF - Q20 C L = 10. MH 1) [30] The circuit shown in the diagram has a switch which is turned on at time t = 0, and it is known that the capacitor C is charged with Q = +1.0 /C on its plates. as shown. The capacitance is known to be C = 1.0 nF, and the inductance equals L = 10 /H. a) [5) as you close the switch, what is the current in the circuit? b) [10] Which function describes the current as a function of time? (there may be undetermined constants in your expression) c) [5) What is the natural oscillation frequency for this circuit? d) [10] What is the total energy stored in the circuit