大学物理(热学) 1) Review 2) Applications 2006-12-6 2021/9/5
2021/9/5 1 大学物理（热学） 1) Review 2) Applications 2006-12-6
4+186丁=ca e ca Weight FIGURE 19-1 Joule's experiment on the mechanical equivalent of heat H204s→(S.Sc
Heat is energy that is transferred from one bod to another because of a difference in temperature
• Heat is energy that is transferred from one body to another because of a difference in temperature
内为0 dU=dQ+dW
•dU=dQ+dW
FIGURE 19-10 The work done by a gas when its volume increases by dv A dl isdw p dk area dQ-pdv dw=F dp=-Fde =-padp=-Pdv