An outdoor swimming pool uses 210 000KJ Energy to warm it from 15 C to 20°C. It contains 10,000kg of water. Calculate the Specific Heat Capacity of the water in the pool​

Modify the equation fδt=δ (mv) to find the force of friction.

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.

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.