送交者: pingshcn 于 2004-12-25, 06:48:21:

回答: 1度电的能量可烧开约10克水? 由 dlglucose 于 2004-12-24, 11:08:11:

Q=cm(100-room temperature)=1000w*h=1000J/s *3600s

suppose room temperature is 20 degree(C), them we can get m=10.7kg

加跟贴