A large heated steel block (ρ = 7832 kg/m3 cp = 434 J/kg·K. k = 63.9 W/m·K. and α = 18.8 × 10–6 m2 /s) is allowed to cool in a room at 25°C. The steel block has an initial temperature of 450°C and the convection heal transfer coefficient is 25 W/m2 ·K. Assuming that the steel block can be treated as a quarter-infinite medium, determine the e temperature at the edge of the steel block after 10 minutes of cooling.
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