A thermally insulated, closed copper vessel contains water at `15^@C`. When the
Channel: Doubtnut
Date: 2020-08-23

A thermally insulated, closed copper vessel contains water at `15^@C`. When the vessel is shaken vigorously for 15 minuts, the temperature rises to `17^@C`. The mass of the vessel is 100 g and that of the water is 200 g. The specific heat capacities of copper and water are `420(J)/(kg-K)` and `4200(J)/(kg-K)` resprectively. Neglect any thermal expansion.(a) How much heat is transferred to the liquid vessel system? (b) How much work has been doen on this system? (c ) How much is the increase in internal energy of the system?