A uniform mettalic bar of length 100cm and mass 40kg is supported horizontally by two vertical spring balances A an B balance A is 20cm from one end while balanceB is 30cm from the other end find the reading of each individual balance AB

Which articulations allow for greatest range of motion?

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.

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?