$1.$ For a certain resistor with a normal $($that is$,$ roomtemperature$)$ resistance of $150$ V$,$ the values of the

constants in Equation $(11\mathrm{.}4)$ are found to be

A $54\mathrm{.}05,$ B $54\mathrm{.}22,$ and K $54\mathrm{.}11,$ in units such that

R will be in ohms and T in kelvin. What is the resistance of this resistor at $($a$)$ T $577$ K$,($b$)$ T $520$ K$,$

and $($c$)$ T $51$ K$?$