7-136 A cylindrical rod is placed in a crossflow of air at 20°C (1 atm) with velocity of 10 m/s. The rod has a diameter of 5 mm and a constant surface temperature of 120˚C. Determine (a) the average drag coefficient, (b) the convection heat trans- fer coefficient using the Churchill and Bernstein relation, and (c) the convection heat transfer coefficient using Table 7-1.

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