33 A steel plate is 0 3 m long 0 1 m wide and 0...
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33 A steel plate is 0 3 m long 0 1 m wide and 0 012 m thick The plate is placed on a heating plate of identical size maintained at 100 C The heating plate is receiving energy through a 50 W heater The heating plate losses heat only to the steel plate which is well insulated from all sides except at the top The top surface of the steel plate is exposed to an airstream of temperature 20 C The top surface of the steel plate radiates like a black body Calculate the rate at which the top surface looses heat due to convection The surface of steel plate in contact with heating plate is at 100 C Thermal conductivity of steel k 16 Wm K Stefan s constant 5 67 x 10 8 Wm K 4 0 3 m 0 012 m 0 1 m Heating plate
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