Question

Use a computer to reproduce the table and graph in Figure 2.4: two Einstein solids, each containing three harmonic oscillators, with a total of six units of energy. Then modify the table and graph to show the case where one Einstein solid contains six harmonic oscillators and the other contains four harmonic oscillators (with the total number of energy units still equal to six) Assuming that all microstates are equally likely, what is the most probable macrostate, and what is its probability? What is the least probable macrostate, and what is its probability? 100 6 28 5 21 4 15 3 10 28 63 90 100 90 63 28 S0 3 10 4 15 5 21 6 28 40- 20 462 (6+6-1 6 Figure 2.4. Macrostates and multiplicities of a system of two Einstein solids, each containing three oscillators, sharing a total of six units of energy.

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Answer #1

The most probable macrostate is the one with the highest number of microstates since all microstates are equally likely to occur.

Therefore, qA = qB = 3 is the most probable macrostate and its probability is: P = 100/462 = 0.2164 = 21.64%

The least probable macrostate is the one with the lowest number of microstates.

Therefore, qA = 0 and qB = 6 or vice-versa are the least probable with probability: P = 28/462 = 0.0606 = 6.06%.

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