A pot of water is boiling less than one atmosphere of pressure. Suppose that heat enters the pot only through its bottom, which is copper and rests on a heating element. In two minutes, the mass of water boiled away is m = 0.43 kg. The radius of the pot bottom is R = 7.0 cm and the thickness is L = 1.9 mm. What is the temperature TE of the heating element in contact with the pot?