PHYS 2101 Lecture : Lecture 37
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Also, a new hw #14 is also posted. There will be a quiz on a hw-like question on friday. Not too bad, not too good, but similar to previous tests . V f area under p-v graph, path dependent. Vi: first law - internal energy of system. Ideal gas law n = number of moles. N = number of particles pv = nrt pv = nkt k = 1. 38 10-23 j/k. Constant-volume processes (isochoric)- no work is done w = 0 a) if heat is absorbed, the internal energy increases b) note: temperature changes! Cyclical process (closed cycle) eint,closed cycle =0 a) net area in p-v curve is q. Free expansion (non equilib) a) happens suddenly b) no heat tranfer c) no work done. Combining the above with the ideal gas laws yields the root-mean-square velocity v rms. The ke of all ideal gas molecules depends only on the temperature (not mass!)
