Dielectrics: A parallel$-$plate capacitor consists of two parallel, square plates that have dimensions $1\mathrm{.}0$ cm by $1\mathrm{.}0$ cm$.$ If the plates are separated by and the space between them is filled with teflon, what is the capacitance of this capacitor? $($The dielectric constant for teflon is $2\mathrm{.}1,$ and $0=8\mathrm{.}8510-12$ C$2/$N $$ m$2.)$