[شعاع الضوء]

Consist of 4 distinguishable spinless particles and its total energy is 3 energy units. Another system (A) consist of 2 distinguishable spinless particles and its total energy 3 energy units also the energy levels in both systems are non-degenerate and having energy 0,1,2,3...energy units 1-find the number of accessible microstates of each system 2- if the two system are brough into thermal contact and allowed to reac equilibrium what are number of microstes of the composite system(A) and were are the most probable energy and average energe of the system A(A) and (A)( System (A



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