You are part of an engineering research team that is designing a pulsed nitrogen laser. To create the high energy densities needed to operate such a laser, the electrical discharge from a high-voltage capacitor is used. Typically, the energy requirement per pulse (i.e., per discharge) is 96 J. Estimate the capacitance required if the discharge is to create a spark across a gap of about 0.93 cm. Assume that the dielectric breakdown of nitrogen is the same as the value for normal air.
I honestly am completely lost.
I know C = Q/V = Q/Ed and also the potential energy U = 1/2 CV^2 but I don't know what I can do with the variables I'm given to get either V or E.