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A system, at temperature T, has particles that can be in three different states: s=-1, 0,...

A system, at temperature T, has particles that can be in three different states: s=-1, 0, 1. The energy of the particle is given by: E_s = -μ*B*s , where μ is a constant and B is an applied magnetic field.

(a) Find the expected energy value for a system of 3 particles.

(b) Generalize part (a) for a system of N particles
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