A venturimeter has a pipe diameter of 10.0cm and a throat diameter of 5.0cm. If the water pressure in the pipe is 2 0.5 kg cm− and in the throat is 0.3 kg cm , −2 determine the rate of flow of water.

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.