A thick wood slab (k = 0.17 W/m K and a = 1.28 x 10-7 m²/s) that is initially at a uniform temperature of 25°C is exposed to hot gases at 550°C for 5 min. The heat transfer coefficient between the gases and the wood slab is 35W/m²K. If the ignition temperature of the wood is 450°C, determine if the wood will ignite.