Question 3 Position vs. time graph of a car is given below. Sketch a graph of velocity versus time and a
graph of acceleration versus time corresponding to the graph of displacement versus time given
in the graph.
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Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.