Use a mathematical software (Matlab, Mathematica, Python, or even Excel, etc) to make a plot of the Einstein heat capacity as a function of the characteristic frequency, w0 (omega knot), for three different temperatures 10 K, 100 K, and 1000K. Make your horizontal axis in units of wavenumbers (cm-1), the typical unit for describing vibrational frequencies. For the 100 K plot, annotate your plot and give a physical interpretation of why the heat capacity behaves as it does.