Find the thermal conductivity of charcoal

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Two thin concentric spherical shells of radius 0.05 m and 0.15 m, respectively, have their annular cavity filled with charcoal.

When energy is supplied at the steady rate of 10.8 W to a heater at the center, a temperature difference of 50°C is set up between the spheres. Find the thermal conductivity of charcoal.

Reference no: EM131353839

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