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please provide reasoning for this heat transfer problem 6-53 Helium at 1atm and 325K flows across a 3 -mm-diameter cylinder that is heated to 425K.

please provide reasoning for this heat transfer problem
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6-53 Helium at 1atm and 325K flows across a 3 -mm-diameter cylinder that is heated to 425K. The flow velocity is 9m/s. Calculate the heat transfer per unit length of wire. How does this compare with the heat transfer for air under the same conditions

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