Question: Water flows in a 3.0-cm-diameter tube having a relative roughness of 0.002 with a constant wall temperature of 80oC. If the water enters at 20oC,

Water flows in a 3.0-cm-diameter tube having a relative roughness of 0.002 with a constant wall temperature of 80oC. If the water enters at 20oC, estimate the convection coefficient for a Reynolds number of 105.

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