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A 5 cm diameter copper sphere (p=8933 kg/m; k=401 W/m K; c,-385 J/kg*K) is initially at a uniform temperature of 250 C when it
A 5 cm diameter copper sphere (p=8933 kg/m; k=401 W/m K; c,-385 J/kg*K) is initially at a uniform temperature of 250 C when it is suddenly immersed in a fluid at 30 C. The convection heat transfer coefficient between the sphere and the fluid is 28 W/mK. Estimate the time necessary for the temperature at the center of the sphere to reach 90 C. a. 37 hours b. 2.2 hours 22 minutes d. 10 minutes
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Shigleys Mechanical Engineering Design
Authors: Richard G. Budynas, J. Keith Nisbett
9th edition
77679520, 73529281, 1259986241, 978-0077679521, 9780073529288, 9781259986246, 978-1121345317
