I believe it is c because the least dense would be on top. so x is least dense, then y, and then z
Your average speed is 20 mph, but ONLY IF YOU'RE IN THE CAR during those 2 hours.
Rutherford's model of the atom (ESAAQ) Rutherford carried out some experiments which led to a change in ideas around the atom. His new model described the atom as a tiny, dense, positively charged core called a nucleus surrounded by lighter, negatively charged electrons.
The greater the mass the greater is inertia.
