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標題:

物理題1條吾識,教下我(5分)

• 高手請幫忙算命 2006年10月29日18時36分
• psp 3.30 downgrade-
• 求2^2+4^2+6^2+...+40^2=-@1@

• 高手請幫忙算命 2006年10月29日18時36分
• psp 3.30 downgrade-
• 求2^2+4^2+6^2+...+40^2=-@1@

 

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發問:

Q1.A metal block is first immersed in boiling water for some time.The block is then transferred to a cup of cold water.The temperature of the water is measured.The result of the experiment is as follow:Mass of metal block=0.8kgMass of water in the cup =0.3kgInitial temperature of water in the cup=23℃Final ... 顯示更多 Q1.A metal block is first immersed in boiling water for some time.The block is then transferred to a cup of cold water.The temperature of the water is measured. The result of the experiment is as follow: Mass of metal block=0.8kg Mass of water in the cup =0.3kg Initial temperature of water in the cup=23℃ Final temperature of water in the cup=38℃ Find the specific heat capacity of the metal(in Jkg -1 K-1) *詳細列式,解析

最佳解答:

A metal block is first immersed in boiling water for some time. 呢句既係指Initial temperature of metal block=100℃ 因為specific heat capacity of the water=4200,所以 loss in heat energy of metal block=loss in heat energy of water 0.8C dT=0.3*4200 dT 0.8C(100-38)=0.3*4200 (38-24) C=11025/31=355.6(Jkg -1 K-1) 幫你做完功課啦,比分我呀=.=

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