Tossup

Lev Landau derived an operator named for these phenomena that contains the term [read slowly] “f star times the divergence of f minus f times the divergence of f star.” An operator named for these phenomena is simplified to a scalar “frequency” in a lattice model named for Bhatnagar, Gross, and Krook. Steady-state solutions to an equation named for [emphasize] not including these phenomena correspond to functions (-5[1])of the integrals of motion according to Jeans’s theorem. The Stosszahlansatz (10[1])(“sh’TOAST-sahl-ahn-zahts”) assumes that the velocities of particles (-5[1])undergoing these phenomena (10[1])are uncorrelated (10[2])and (10[1])independent of (10[1])position. The primary use (10[1])of the center-of-momentum frame is to study (10[1])these (10[1])events. (10[7])Mean free path (10[1])gives (10[1])the (10[1])average (10[1])distance (10[2])traveled between these events. (10[1])For 10 points, name these events that in ideal gases are always assumed to be elastic. ■END■ (10[1])

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