Question: A hot sphere having a diameter of 1.5 m is maintained at 300C and buried in a material with k = 1.2 W/m C and

A hot sphere having a diameter of 1.5 m is maintained at 300ºC and buried in a material with k = 1.2 W/m· ºC and outside surface temperature of 30ºC. The depth of the centerline of the sphere is 3.75 m. Calculate the heat loss.

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