Physics - Heat & Thermo Question with Solution | TestHub

A liquid has densities $1000\mathrm{kg}{\mathrm{m}}^{-3}$ at 20°C and $990\mathrm{kg}{\mathrm{m}}^{-3}$ at 40°C. Define its average cubical expansion coefficient as $\bar{\gamma }=\frac{\left(V_{40}-V_{20}\right)}{\left[V_{20}(40-20)\right]}$. Find $10^4\bar{\gamma }$ in ${\mathrm{K}}^{-1}$, to three decimals.