A \(25.0-\mathrm{m}\) steel wire and a \(50.0-\mathrm{m}\) copper wire are attached end to end and stretched to a tension of \(145 \mathrm{~N}\). Both wires have a radius of \(0.450 \mathrm{~mm}\), and the densities are \(7.86 \times 10^{3} \mathrm{~kg} / \mathrm{m}^{3}\) for the steel and \(8.92 \times 10^{3} \mathrm{~kg} / \mathrm{m}^{3}\) for the copper. (Note that these are mass densities, mass per unit volume, not linear mass densities, mass per unit length.) How long does a wave take to travel from one end to the other end of the combination wire?