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Problem 4: Air at 20°C and 1 atm flows over a horizontal flat plate at 1...

Problem 4: Air at 20°C and 1 atm flows over a horizontal flat plate at 1 m/s. The plate is 20m by 1m and is maintained at 60°C. If the flow is in the direction of smaller side, calculate the power needed to maintain the surface temperature.

Also repeat problem 4 for a case where air velocity is zero.

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