Answer
$C=72F$
Work Step by Step
Recall the following equation:
$U=\frac{1}{2}CV^2$
This simplfies to:
$C=\frac{2U}{V^2}$
We plug in the known values to obtain:
$C=\frac{2(3.6\times10^7)}{(1000)^2}$
$C=72F$
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