Fig. 6.10 shows heat capacity of a crystal vs temperature in terms of the Debye theory. Here C cl is classical heat capacity, Θ is the Debye temperature. Using this plot, find:
(a) The Debye temperature for silver if at a temperature T = 65 K its molar heat capacity is equal to 15J/ (mol. K);
(b) The molar heat capacity of aluminium at T = 80 K if at T = 250 K it is equal to 22.4J / (mol. K);
(c) The maximum vibration frequency for copper whose heat capacity at T = 125 K differs from the classical value by 25%.

Transcribed Image Text:

C/Col 0. 0.4 0.2 0.2 0.4 0.8 T/9 0.6