Question

Calculate the area expansivity and volume expansivity of a brass of area 120m and 120m respectively that assumes a new area and volume of 130m and 130m respectively when the linear expansivity is 0.00005 through a temperature of 50 degrees Celsius

Answer 1

$$\beta=2\alpha=2\frac{0.00005}{50}=2\cdot10^{-6}\degree C^{-1}$$

$$\gamma=3\alpha=3\frac{0.00005}{50}=3\cdot10^{-6}\degree C^{-1}$$