Physics - Heat & Thermo Question with Solution | TestHub

At 40°C, a brass rod is 50 cm long and 3.0 mm in diameter. It is joined end to end to an identical-sized steel rod. What is the total length increase at $240^{\circ }C$ ? Use ${\alpha }_b=2.0\times 10^{-5}$ and ${\alpha }_s=1.2\times 10^{-5}{}^{\circ }{C}^{-1}$.