Physics - Heat & Thermo Question with Solution | TestHub

Thermal energy corresponds to internal energy Mass $=1\mathrm{kg}$ density $=8\mathrm{kg}/{\mathrm{m}}^3$ $\Rightarrow$ Volume $=\frac{\text{ mass }}{\text{ density }}=\frac{1}{8}{\mathrm{m}}^3$ Pressure $=8\times 10^4\mathrm{N}/{\mathrm{m}}^2$ $\therefore$ Internal Energy $=\frac{5}{2}\mathrm{P}\times \mathrm{V}=5\times 10^4\mathrm{J}$