A rifle is 2000 times as heavy as the bullet it fires. A bullet leaves the rifle at a velocity of 100metres per second . What is the recoil velocity of the rifle?

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

a self-report inventory personality assessment is not very reliable for a psychological test because a patient doing the assessment may exaggerate or under-report in the answers. also, people will tend to be high on desirable behaviors and low on undesirable things.