A 20 cm wall has left face held at 25°C and right face exposed to 50°C air. There is no internal heat generation; k = 100 W/(m·K) and right-side convection coefficient h = 50 W/(m²·K). Find steady right-face temperature (one decimal °C).
Heat flux is $q^{\prime\prime}=(50-25)/(L/k+1/h)=25/(0.002+0.02)=1136.36$ W/m². Right-face temperature is $T_s=50-q^{\prime\prime}/h=27.2727^\circ$C. Rounded answer: **27.3°C**.
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