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  3. a long cylindrical object with diameter d=100cm (k

A long cylindrical object with diameter D=100cm (k=400 W/mK, C­p = 400 J/kg K, density =...

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Mechanical Engineering

A long cylindrical object with diameter D=100cm (k=400 W/mK,C­p = 400 J/kg K, density = 9000 kg/m3) isput into an oven of 1100 K with convective

heat transfer coefficient h of 50 W/m2 K. The initialtemperature of this object is 300 K. How much time does it take forthe center of the object to reach

700K? How much time does it take for thesurface of the object to reach 700K?

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