The energy needed to change a substance from one state to another is called of fusion/vaporation. a. heat b. work c. entropy d. energy

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

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.