Question: Water flows in a 2-cm-diameter tube at an average flow velocity of 8 m/s. If the water enters at 20oC and leaves at 30oC and

Water flows in a 2-cm-diameter tube at an average flow velocity of 8 m/s. If the water enters at 20oC and leaves at 30oC and the tube length is 10 m, estimate the average wall temperature necessary to effect the required heat transfer.

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