300 gallons per hour of engine oil at 100F enters a 1.25 in ID heated copper tube. The tube is 20 ft long and its inner surface is maintained at 200 F. Determine the outlet temperature of the oil. The following information is available Cp = 0.5- p= Btu Lbm'F 50 lbm/ft lbm ft h k = 0.10 Btu/(h ftF) = 1.6-