Physics - Heat & Thermo Question with Solution | TestHub

A room loses heat at a rate $K\left(T-T_0\right)$ with $T_0=11^{\circ }$C, and its heat capacity is $C$ with $\frac{C}{K}=600$ s. The heat engine turns off at $26^{\circ }$C and turns on again at $21^{\circ }$C. Find the time in seconds the engine stays off (nearest whole number; $\text{ln}1.5=0.4055$).