(Solution Download) A thick concrete wall having a uniform temperature of 54?C is suddenly subjected to an airstream at.

A thick concrete wall having a uniform temperature of 54?C is suddenly subjected to an airstream at 10?C. The heat-transfer coefficient is 10 W/m2 · ?C. Calculate the temperature in the concrete slab at a depth of 7 cm after 30 min. Be sure to explain your answer in context and to list all steps leading up to your final answer.