A ball is rolling up and over a hill. The ball slows down as it moves from Position 1 to Position 3. and it speeds up as it moves from Position 3 to Position 5. When is the gravitational potential energy of the ball being transformed into motion energy (kinetic energy)?

1. they vary with a higher number because boiling is way hotter than melting

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8

b) nuclear ive learned that in a pedtrodic table