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Grade 12Thermal Physics

A beaker containing 200g of water. The heat capacity of the beaker is equal to that of 20g water. The initial temperature of water in the beaker is 20°C. If 440g of hot water at 92°C is poured in,the final temperature(neglecting radiation loss) will be nearly

Sai chandu

9 Years agoGrade 12

1 Answer

MPRANEETH

9 Years ago

we knowthat principle of calorimetry :heat lossed by the hotbody is equal to heat gained by the cold body

there we know that Q=mc(dt)

therefore equating to theheat gained by cold body

given total mass is (200+20)(T-20)=440*((92-T))

THEREFORE ON SIMPLIFYING WE GET T =68

iassumed the final temperature T

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