Question: A 1 0 - cm - diameter, 3 0 - cm - high cylindrical bottle contains cold water at 3 C . The bottle is

A 10-cm-diameter, 30-cm-high cylindrical bottle contains cold water at 3C. The bottle is placed in windy air at 27C. The water temperature is measured to be 11C after 45 minutes of cooling. Disregarding radiation effects and heat transfer from the top and bottom surfaces, estimate the average wind velocity.
A 1 0 - cm - diameter, 3 0 - cm - high

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