I'm supposed to estimate at what temp. copper will have the same resistivity as tungsten at 20 deg. C.
The only equation I think is relevant is
The Attempt at a Solution
I know the resistivity of both copper and tungsten at 20 degrees C. I just don't know what I should do about the resistivity, p0, at temperature, T0 since I don't know either of those quantities.
I cant cancel those variables out when I set p(tungsten)=p(copper) so I'm not sure what to do.