A copper cylinder with a diameter of 3 in is initially at a uniform temperature of 70

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A copper cylinder with a diameter of 3 in is initially at a uniform temperature of 70 F. How long after being placed in a medium at 1000 F with an associated convective heat-transfer coefficient of 4 Btu/h ft2 F will the temperature at the center of the cylinder reach 500 F, if the height of the cylinder is 

(a) 3 in? 

(b) 6 in? 

(c) 12 in? 

(d) 24 in? 

(e) 5 ft?

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Fundamentals Of Momentum Heat And Mass Transfer

ISBN: 9781119723547

7th Edition

Authors: James Welty, Gregory L. Rorrer, David G. Foster

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