A glass bulb is filled with 0,6 m³ of mercury at a temperature of 20 °C. The bulb and mercury are heated to 70 °C. The linear coefficient of expansion of glass is 11 × 10⁻⁶/°C and the volume coefficient of expansion of mercury is 20 × 10⁻⁵/°C. Calculate the overflow of mercury.

Here's the solution for question 3:

Given:
Initial volume ($V_0$) = $0.6 \text{ m}^3$
Initial temperature ($T_0$) = $20 \text{ °C}$
Final temperature ($T_f$) = $70 \text{ °C}$
Linear coefficient of expansion of glass ($\alpha_g$) = $11 \times 10^{-6} \text{ /°C}$
Volume coefficient of expansion of mercury ($\gamma_m$) = $20 \times 10^{-5} \text{ /°C}$