A flat plate test section, which is 0.5 m wide and has an electrically heated surface installed 0.5 m away from the leading edge, as depicted in the schematic given, is to be designed for a boundary-layer measurement experiment. The electrically heated strip, which is 10 cm long and 5 mm deep, is insulated at its bottom surface as well as both wide-end edges. If the surface of this electrical heater strip is to be maintained at a uniform temperature of 120°C when atmospheric pressure air at 20°C flows over it at 20 m/s, estimate the rate of heat generation necessary in the heated strip in order to maintain its surface temperature uniformly.

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Air U,T X 0.5 m 10 cm Electrical heater strip, T 45 mm