PHYS 2101 Lecture : Lecture37
Document Summary
Wednesday, april 25, 2012: hw 14 due tuesday night may 1, of ce hours mwf 12:30-1:30 (not wed. this week!, exam 4: average 69 (our section, final exam: may 8 5:30-7:30pm. Today : exams returned, more chapter 19, quiz. Last time: kinetic theory: ideal gas law: pv = nrt, work during an isothermal process: w = nrt ln. Vi: work during an isobaric process: w = p!v = nr!t, root-mean-squared speed of particles in an ideal gas: v rms = Basically the typical particle speed: internal energy of a monatomic ideal gas: 2 nrt: heat capacity at constant volume: q = ncv !t with c. It satis es: q = ncp!t (same formula, but now the process is at constant pressure) But now, we have a different relationship between the heat input and change in internal energy: constant pressure process: !eint = q " w = ncp!t " p!v. 2 nr!t: use the ideal gas law: p!v = nr!t.
