1.

Find the mass of the fuel required to raise the temperature of 2 kg of water in a copper containerof mass 1 kg by 88^(@)C. Given calorific value of fuel is 48 MJ kg^(-1), specific heat capacity of water is 1 cal g^(-1).^(@)C^(-1) and specific heat capacity of copper is 0.095 cal g^(-1).^(@)C^(-1).

Answer»

Solution :(i) Energy supplied is utilized to RAISE the temperature TURE of both water and container.
(ii) Definition of calorific value.
(iii) `Q=m_(U)s_(ur)Deltat_(w)+m_(c)s_(c)Deltat_(c)`
(iv) Q=mc
(V) 16.3 g


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