A thin, $0\mathrm{.}250000[m]($assume infinite precision$)$ strip of copper is stored at a room temperature of $68\mathrm{.}00[F].($a$)$ What is this temperature in $C$ and $K?($b$)$ If the strip of copper is heated to a temperature of $90\mathrm{.}00[F],$ find the new length of the copper strip $)=(17{10}^{-6}[K^{-1}].$