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The heat flux, q, is 6000 W/m2 at the surface of an electrical resistance heater. The...

The heat flux, q, is 6000 W/m2 at the surface of an electrical resistance heater. The heater temperature is 120C when it is cooled by air at 70C. (a) What is the average convective heat transfer coefficient, ? (b) What will the heater temperature be if q is reduced to 2000 W/m2?

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