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12.2 On the basis of the following information, which is partly hypothesis and partly somewhat simplified experimental data, calculate the melting pressure of \( { }^{3} \mathrm{He} \) at \( 0 \mathrm{~K} \). (a) Between 0 and \( 10 \mu \mathrm{K} \), the heat capacity of the solid is very high, but between \( 10 \mu \mathrm{K} \) and \( 1 \mathrm{~K} \), it is much less than that of the liquid. (b) Below \( 1 \mathrm{~K} \) the heat capacity of the liquid is proportional to \( T \). (c) The expansivity of both phases may be assumed to be zero. (d) At \( 0.4 \mathrm{~K} \), the melting pressure \( p_{\mathrm{m}} \) is \( 30 \mathrm{~atm} \) and \( \mathrm{d} p_{\mathrm{m}} / \mathrm{d} T=0 \). At \( 0.7 \mathrm{~K} \), \( p_{\mathrm{m}} \) is \( 33 \mathrm{~atm} \).

          12.2 On the basis of the following information, which is partly hypothesis and partly somewhat simplified experimental data, calculate the melting pressure of \( { }^{3} \mathrm{He} \) at \( 0 \mathrm{~K} \).
(a) Between 0 and \( 10 \mu \mathrm{K} \), the heat capacity of the solid is very high, but between \( 10 \mu \mathrm{K} \) and \( 1 \mathrm{~K} \), it is much less than that of the liquid.
(b) Below \( 1 \mathrm{~K} \) the heat capacity of the liquid is proportional to \( T \).
(c) The expansivity of both phases may be assumed to be zero.
(d) At \( 0.4 \mathrm{~K} \), the melting pressure \( p_{\mathrm{m}} \) is \( 30 \mathrm{~atm} \) and \( \mathrm{d} p_{\mathrm{m}} / \mathrm{d} T=0 \). At \( 0.7 \mathrm{~K} \), \( p_{\mathrm{m}} \) is \( 33 \mathrm{~atm} \).

12.2 On the basis of the following information, which is partly hypothesis and partly somewhat simplified experimental data, calculate the melting pressure of ^3He at 0 K.
(a) Between 0 and 10 μK, the heat capacity of the solid is very high, but between 10 μK and 1 K, it is much less than that of the liquid.
(b) Below 1 K the heat capacity of the liquid is proportional to T.
(c) The expansivity of both phases may be assumed to be zero.
(d) At 0.4 K, the melting pressure pm is 30 atm and d pm / d T=0. At 0.7 K, pm is 33 atm.

Added by Martin G.

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