this is another one

20.29 An electric light bulb rated at 60 W has a surface f temperature of 145 C when cooled by atmospheric air at 25 . The air flows past the bulb with a velocity of 0.5 m/s. Thambulb can be modeled as a sphere with a diameter of 7.5 cl. Determine the heat transfer from the bulb by the mechanism of forced convection. a 20 20 19 4/5 milan Si