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Assume that a particular body has the equation of state U = NCT with NC = 10 J/K and assume that this equation of

Assume that a particular body has the equation of state U = NCT with NC = 10 J/K and assume that this equation of state is valid throughout the temperature range from 0.5 K to room temperature. How much work must be expended to cool this body from room temperature (300 K) to 0.5 K, using the ambient atmosphere as the hot reservoir?

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