Who is credited with popularizing the geocentric model of the solar system

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

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

How can waves travel through ground?