... Thermodynam ics and Statistical Physics 84 2.9. Solutions Set 2(2. 244 ) and Maxwell’s relationµ∂σ∂V¶τ,N=µ∂p∂τ¶V,N, (2. 245 )one findsµ∂U∂V¶τ,N= τµ∂p∂τ¶V,N− p. (2. 246 )In the ... Zint− 1¶. (2.182)(2.183)Eyal Buks Thermodynam ics and Statistical Physics 80Chapter 2. Ideal Gas 4. Using Eqs. (1.87), (1.70) and (1.71), and noting that∂∂τ= −1τ2∂∂β, (2.189)one finds ... isentropic processes (b → c and d → a)noheat is exchanged. Thusη =1+QlQh=1+Cp(τd− τc)Cp(τb− τa). (2.2 94) Eyal Buks Thermodynam ics and Statistical Physics 94 Chapter 2. Ideal GasZ...