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Need help- Thermal problem?A solid sphere (density p and specific heat capacity c) of radius r at an initial temperature 200K is suspended inside a chamber whose walls are at almost 0K.The time required (in micron sec) for the temperature of the sphere to drop to 100K is-1) 72/7 rpc/sigma2) 7/72 rpc/sigma3)27/7 rpc/sigma4) 7/27 rpc/sigma


Need help- Thermal problem?A solid sphere (density p and specific heat capacity c) of radius r at an initial temperature 200K is suspended inside a chamber whose walls are at almost 0K.The time required (in micron sec) for the temperature of the sphere to drop to 100K is-1) 72/7 rpc/sigma2) 7/72 rpc/sigma3)27/7 rpc/sigma4) 7/27 rpc/sigma


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