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Solve the following questions:

Question A: Assuming that the upper surface of the ice sheet is at -13?C and the bottom surface is at 0 ?C, calculate the time it will take to form an ice sheet 25cm thick.

Question B: If the lake in part (A) is uniformly 35m deep, how long would it take to freeze all the water in the lake?

What is the solution of the above questions?

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