Ascientist finds a piece of rock in a crater. he analyzes the rock and realizes that the composition is mostly of iron and nicke. he claims that he found a meteor. what is most likely the scientists error?

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.