How many arrangements are there of 15 indistinguishable lattice gas particles distributed on: v = 20 sites v = 16 sites v = 15 sites you bring a second lattice gas system with 3 cells and 3 particles in contact via a permeable barrier to each of the above systems. for each of the cases. show if particles flow across this barrier.

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.