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A cylindrical rod of radius 4 cm and length 50 cm has an annular region of thickness 2 cm added to its outer surface. The
A cylindrical rod of radius 4 cm and length 50 cm has an annular region of thickness 2 cm added to its outer surface. The thermal conductivity of the material of the rod and the annular region are 10 W/mK and 20 W/mK respectively. If the temperature at the inner surface of the rod is maintained at 100degC and that at the outer surface of the annular region is 50degC, what is the rate of heat conduction through the annulus?
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