Will mark brainliest! The mass number is
A. the number of protons
B. the number of neutrons plus the number of protons
C. the number of neutrons minus the number of protons
D. the number of neutrons

John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?

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

The ability to make things happen is also called a. heat b. force c. matter d. energy