Problem B13:
In the figure above there are two capacitors, each with square plates. In the one on the left,
the plates are separated by a distance d_{0}, and each square plate has a side of
length l_{0}. The capacitance of the left capacitor is C_{0}. For the
capacitor on the right, the plates are separated by a distance of n_{1}d_{0},
and each square plate has a side of length n_{2}l_{0}. If the capacitance
of the right capacitor is n_{3}C_{0}, what is n_{3} ?

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