A long wooden rod at 38?C with a 2.5 cm diameter is placed into an airstream at 600?C. The heat transfer coefficient between the rod and air is 28.4 W/(m2 K). If the ignition temperature of the wood is 427?C, ρ = 800 kg/m3, k = 0.173W/(m K), and c = 2500 J/(kg K), determine the time between initial exposure and ignition of the wood.GIVENA long wooden rod is placed into an airstreamRod outside diameter (D) = 2.5 cm = 0.025 mInitial temperature of the rod (To) = 38?CTemperature of the airstream (T??) = 816?CThe heat transfer coefficient (hc) = 28.4 W/(m2 K)The ignition temperature of the wood (TI) = 427?CDensity of the rod (ρ) = 800 kg/m3Thermal conductivity (k) = 0.173 W/(m K)Specific heat (c) = 2500 J/(kgK)

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D-2.5 cm Alr T = 816°C