Assume that the pressure in a room remains constant at 1.01
x10^5 pa and the aire is composed only of nitrogen. the volumeof
the room is 60.0 m^3. when the temperature increases from 289 to302
k, what mass of air (in kg) escapes from the room?

Abearing is designed to a reduce friction b. support a load c.guide moving parts such as wheels, shafts and pivots d. all of the above

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

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.