Freshly painted aluminum rods, 0.02 m in diameter, are withdrawn from a drying oven at 150 C and cooled in a 3 m/s cross flow of air at 23 C. How long will it take to cool them to 40 C so they can be handled? [20 pt] Use these air properties: = 1.982 106 2/, = 0.0282 / , = 0.708. For aluminum: = 2.45 106 /3, = 240 / . (Hint: find and check if we can use the lumped capacitance model)