A train is moving with a velocity of 70 km/h. If north is taken as the positive direction, what is the direction of movement of the train?

The mentor is usually a peer of the individual that acts as a role model and the individual get started in adult life.

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

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.