An isolated parallel-plate capacitor in air has plates of area $0.02\ \text{m}^2$, and carries charges of $+2\ \mu\text{C}$ and $-2\ \mu\text{C}$ on its plates. Take $\varepsilon_0 = 8.85 \times 10^{-12}\ \text{C}^2\,\text{N}^{-1}\,\text{m}^{-2}$. The force with which the plates attract each other is closest to