A thick wood slab (k = 0.17 W/m · °C and α = 1.28 × 10–7 m2/s) that is initially at a uniform temperature of 25°C is exposed to hot gases at 550°C for a period of 5 min. The heat transfer coefficient between the gases and the wood slab is 35 W/m2 · °C. If the ignition temperature of the wood is 450°C, determine if the wood will ignite.
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