The surface temperature of a 3-in-diameter baked potato is observed to drop from 300°F to 200°F in 5 min in an environment at 70°F. Determine the average heat transfer coefficient between the potato and its surroündings. Using this heat transfer coefficient and the same surface temperature, deteimine how long it will take for the potato to experience the same temperature drop if it is wrapped completely in a 0.12-in-thick towel (k = 0.035 Btu/h·ft·°F). You may use the properties of water for potato.
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