A pot of water is boiling under one atmosphere of pressure.
Assume 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 = 4.0 kg. The radius of
the pot bottom is R = 9.0 cm and the
thickness is L = 2.0 mm. What is the temperature
of the heating element in contact with the pot?
(115.6 0C)