Question 7 Consider a spin-1/2 solid where the two energy levels are split by 25 GHz. (a) At a temperature of 200 K, what is the probability that a given atom is in the upper level? (b) At what temperature will 30% of the atoms be found in the upper level?

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Question 7
Consider a spin-1/2 solid where the two energy levels are split by 25 GHz.
(a) At a temperature of 200 K, what is the probability that a given atom is in the upper level?
(b) At what temperature will 30% of the atoms be found in the upper level?
Transcribed Image Text:Question 7 Consider a spin-1/2 solid where the two energy levels are split by 25 GHz. (a) At a temperature of 200 K, what is the probability that a given atom is in the upper level? (b) At what temperature will 30% of the atoms be found in the upper level?
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