Question: 4. A spherical steel container, whose outer diameter is 40 cm, and whose hollow wall is 0.4 cm thick, is filled with water and ice

4. A spherical steel container, whose outer diameter is 40 cm, and whose hollow wall is 0.4 cm thick, is filled with water and ice at 0 C. The outer surface is at 3 C. Calculate the approximate rate of heat loss through the sphere, and the rate at which the ice in the container melts.

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