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

Question:

The power supply for a pulsed nitrogen laser has a 0.050- μF capacitor with a maximum voltage rating of 30kV.

(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 8.0 micro-seconds long, what is the power of the laser pulse?