You have given a power supply, copper wire, and an iron nail. What should you do to decrease the strength of the electro magnet?

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

Describe uniform velocity and variable velocity in short

The mantle is made up of which structural zones?