What is the electrical power needed to the surface


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Q: Atmospheric air is in parallel flow (u8 = 15 m/s, T8 = 15°C) over a flat heater surface that is to be maintained at a temperature of 140°C. The heater surface area is 0.25 m2, and the airflow is known to induce a drag force of 0.25 N on the heater. What is the electrical power needed to maintain the prescribed surface temperature?

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Electrical Engineering: What is the electrical power needed to the surface
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