Example
An Aluminum pot is used to boil water as shown below. The handle of the pot is 20-cm long, 3-cm wide, and 0.5-cm thick. The pot is exposed to room air at 25?C, and the convection coefficient is 5 W/m2 ?C. Question: can you touch the handle when the water is boiling? (k for aluminum is 237 W/m ?C)