Question \# 2(b) Oil enters a tube at fully developed conditions with m=0.1kg/s and Tm,f=90C. The tube made of copper (k=400W/mK) has an inner diameter Di=20mm, outer diameter D0=24mm and a length L=5m. The tube is exposed outside to natural convection with ho=20W/m2K and T=27C. a) (2 points) Sketch the oil and air temperatures versus the tube length. b) (7 points) Determine the overall loss coefficientarea product, UA(W/K). d) (2 points) Determine the heat lost by the oil, q(W). For oil: =850kg/m3,k=0.138W/mK,=3.25102Ns/m2,cp=2130J/kgK