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

Which of the following is considered to be a vector?               a.  temperature    b.  velocity    c.  time    d.  mass

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

What is the angular momentum of the bar about the axle?