A rectangular plate is 20 cm in width and 45 cm in length. The plate is in quiescent air at atmospheric pressure and 293 K temperature. The temperature of plate surface is 350 K.
(a) Calculate the rate of heat transfer from the plate to the air, if the surface is horizontal and upward facing.
(b) Suppose the surface can be tilted with respect to the vertical pane by 30◦ its longer side. Calculate the rate of heat dissipation for the latter configurations.
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