onductivity kwire $=0\mathrm{.}002$ W$/$cm$$K and carries a steady electrical current. The resulting resistive heating causes heat to be generated within the wire $($assume uniformly$)$ at a rate of $2$ W$/$cm$3.$ The wire is insulated with a different material with no internal heat generation and that has a thermal conductivity of $0\mathrm{.}0005$ W$/$cm$$K$.$ The insulation is exposed to air with an ambient temperature of $25$C moving in a manner that yields a convective heat transfer coefficient of $0\mathrm{.}0027$ W$/$cm$2$K$.$