Which of the following is the best definition of an isotope?
a. elements of the same kind with different numbers of neutrons

b. elements of the same kind that have lost electrons

c.
elements of the same kind that have different electrical charges

Suppose you were asked to find the torque about point p due to the normal force n in terms of given quantities. which method of finding the torque would be the easiest to use?

If the speed of a particle triples ,by what factor does its kinetic energy increase?

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