A metal is heated for some time and then put in cold water.Use a thermometer to measure the temperature of cold water.
Mass of metal: 0.8 kg
Mass of cold water: 0.3 kg
temperature of cold water at first: 23C
temperature of cpld water at last: 38C
If there is no energy to the surroundings, we known that the specific heat capticity is 4200 Jkg .What is the specific heat capticity of meat ?
SPECIFIC HEAT CAPTICITY
2007-12-19 12:08 am
回答 (1)
2007-12-19 3:15 am
✔ 最佳答案
Energy gain in water =Energy loss in metalAssume the specific heat capticity of metal is c Jkg^-1C^-1
0.8(c)(100-38)=0.3(4200)(38-23)
49.6c=18900
c=381 Jkg^-1C^-1
Therefore , the specific heat capticity of metal is 381 Jkg^-1C^-1
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