a) a 200cm copper wire and a platinum wire of a 201cm(9 x 10^-6/degree celsius) are both at eexactly 0*C, at what temperature will the two wires be the same length?

b) By how much would you need to heat a 10.0 foot bar of zinc to make it expand by one inch? The coefficient of linear expansion of zinc is 30 x 10^-6 per degree Celsius?


Hope to help this problem using a formula