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A copper bar is 20 cm long and in area of cross section. One end is kept at and the other end is cooled by a spiral tube in which water flows. If the temperature of water entering and leaving the spiral tube are , find the rate of flow of water. Thermal conductivity of copper is 385W/m/K and specific heat of water is 4200 J/Kg/K.


A copper bar is 20 cm long and  in area of cross section. One end is kept at  and the other end is cooled by a spiral tube in which water flows. If the temperature of water entering and leaving the spiral tube are , find the rate of flow of water. Thermal conductivity of copper is 385W/m/K and specific heat of water is 4200 J/Kg/K.


Grade:9

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