A 200 gm piece of metal is heated to 150 degree and then dropped into an aluminium calorimeter of mass 500 gm , containing 500gm of water initially at 25 degree . Find the final equilibrium temperature of the system if the specific heat of metal is 128.100J/kg-K, specific heat of aluminium is 903 J/kg-K, while the specific heat of water 4200 J/kg-K
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