Long cylindrical steel rods (ρ = 7833 kg/m3 and cp = 0.465 kJ/kg · °C) of 10-cm diameter a...

Long cylindrical steel rods (ρ = 7833 kg/m3 and cp = 0.465 kJ/kg · °C) of 10-cm diameter are heat treated by drawing them at a velocity of 3 m/min through a 7-m-longoven maintained at 900°C. If the rods enter the oven at 30°C and leave at 700°C, determine (a) the rate of heat transfer to the rods in the oven and (b) the rate of entropy generation associated with this heat transfer process.