A brass rod has a length of 10 m at $0^{\circ} \mathrm{C}$. What is its length at $100^{\circ} \math

Question

A brass rod has a length of 10 m at $0^{\circ} \mathrm{C}$. What is its length at $100^{\circ} \mathrm{C}$, if the coefficient of linear expansion of brass is 0.000018 per ${ }^{\circ} \mathrm{C}$ ?

Professor PC Thomas Classes · Answer

Linear expansion $\Delta L = L_0 \alpha \Delta T = 10 	imes 0.000018 	imes 100 = 0.018 \mathrm{~m}$. New length is $10.018 \mathrm{~m}$.