A black body of mass 34.38 gm and surfac...

A black body of mass 34.38 gm and surface area `19.2" cm"^(2)` is at an initial temperature of 400K. It is allowed to cool inside an evacuated enclosure kept at constant temperature 300K. The rate of cooling is `0.04^(0)C` per second. The specific heat of the body in J `kg^(-1)K^(-1)` is approximately

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A black body of mass 34.38 g and surface area 19.2cm^(2) is at an intial temperature of 400 K. It is allowed to cool inside an evacuated enclosure kept at constant temperature 300 K. The rate of cooling is 0.04^(@)C//s . The sepcific heat of the body J kg^(-1)K^(-1) is (Stefan's constant, sigma = 5.73 xx 10^(-8)Wm^(-2)K^(-4))

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