A copper sphere having a diameter of 3.0 cm is initially at a uniform temperature of 50°C. It is suddenly exposed to an airstream of 10 C with h=15 W/m C. How long does it take the sphere temperature to drop to 25°C? (p-8900 kg/m', k=380 W/m'C, and C=0.38 kJ/kg.C)

A copper sphere having a diameter of 3.0 cm is initially at a uniform temperature of 50°C. It is suddenly exposed to an airstream of 10 C with h=15 W/m C. How long does it take the sphere temperature to drop to 25°C? (p-8900 kg/m', k=380 W/m'C, and C=0.38 kJ/kg.C)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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