Will upvote every answer! multiple choice!
what is the density of an object that has a mass of 30 kg and a volume of 0.5 m3?
a. 60 kg/m3
b. 0.02 m3/kg
c. 15 m3 • kg
d. none of the above

What is the measure of a change in an objects velocity?

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.

Ain is , is 's of ? 0.62 0.79 1.27 1.50