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3-113 (15 points) Consider a very long rectangular fin attached to a flat surface such that the temperature at the end of the fin is essentially that...

3-113 (15 points) Consider a very long rectangular fin attached to a flat surface such that the
temperature at the end of the fin is essentially that of the surrounding air, namely 20 °C . The
fin’s width is 5.0 cm, its thickness is 1.0 mm, its thermal conductivity is 200 W/m · K, and its
base temperature is 40 °C . The heat transfer coefficient is 20 W/m2 · K. Estimate the fin
temperature at a distance of 5.0 cm from the base, and the rate of heat loss from the entire fin.

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