The power supply for a pulsed nitrogen laser has a 0.050-F capacitor with a maximum voltage rating

Question:

The power supply for a pulsed nitrogen laser has a 0.050-μF capacitor with a maximum voltage rating of 35 kV.
(a) Estimate how much energy could be stored in this capacitor.
(b) If 12% of this stored electrical energy is converted to light energy in a pulse that is 6.2 microseconds long, what is the power of the laser pulse?