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Conceive a system composed of a very large number N of distinguishable atoms at rest and mutually noninteracting, each of which has only two (nondegenerate) energy levels:0,ε>0 Let E / N be the mean energy per atom in the limit N→∞.
a) What is the maximum probable value of E/N if the system is not necessarily in thermodynamic equilibrium? What is the utmost attainable value of E/N if the system is in equilibrium (at positive temperature)?
b) For thermodynamic equilibrium calculate the entropy per atom S/N as a function of E/N.
Q. It is desired to cut a λ/4 length of RG58A/U cable (ε r = 2.3) at 150MHz.What is the physical length of this cable?
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