Could a nucleus that has one proton but no neutrons exist?

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

70 give a real life example showing how sensory neurons work with the motor neurons

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little