A 15.0−μF capacitor is charged by a 150.0-V power supply, then disconnected from the power

A 15.0−μF capacitor is charged by a 150.0-V power supply, then disconnected from the power and connected in series with a 0.280-mH inductor. Calculate:
a) the oscillation frequency of the circuit;
b) the energy stored in the capacitor at time t = 0 ms (the moment of connection with the inductor);
c) the energy stored in the inductor at t = 1.30 ms.