Suppose a constant net force of 345 N is applied to slide a heavy stationary couch across the floor. If the force is contact with the couch for 1.5 seconds, then what is the change in
momentum of the couch?

An object starts from rest at point f and speeds up continuously as it moves around an oval. a. choose a point about 1/8 th of the way around the oval from point f, and label it point g. draw a vector to represent the velocity of the object at point g. b. determine the change in velocity vector   between points f and g.

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.

The movement of electrons between atoms is called an