A 10-cm thick aluminum plate (r = 2702 kg/m3, cp =903 J/kg·K, k = 237 W/m·K, and a = 97.1 * 10–6 m2/s) is beingheated in liquid with temperature of 500°C. The aluminumplate has a uniform initial temperature of 25°C. If the surfacetemperature of the aluminum plate is approximately the liquidtemperature, determine the temperature at the center plane of thealuminum plate after 15 seconds of heating. Solve this problemusing analytical one-term approximation method (not the Heislercharts).

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