A light$-$nanosecond $($Ins$)$ is the distance light travels in $1ns.$

a$)$ Convert $1ft$ to light$-$nanoseconds.

b$)[$Modest extra credit$]$ A single operation on a modern computer takes about $1ns.$ Briefly discuss how the result of part a impacts computer design.

Answer: $1\mathrm{.}02$ lns