Question 2 out of 5 -posting the rest, 1# has been answered!-

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called

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 earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?