A mercury bath at 60?C is to be heated by immersing cylindrical electric heating rods, each 20 cm tall and 2 cm in diameter. Calculate the maximum electric power rating of a typical rod if its maximum surface temperature is 140?C.GIVENCylindrical heating rods in a mercury bathMercury temperature (T??) = 60?CRod diameter (D) = 2 cm = 0.02 mRod height (L) = 20 cm = 0.2 mMaximum surface temperature (Ts) = 140?CASSUMPTIONSSteady stateThe rods are in a verticalposition

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D- 0,02 m T- 150°C Mercury T.- 60°C wz0=1