A phase change from Gas to liquid means that it was cold outside and so the molecules went from being very free moving to forming bonds with one another due to the cold.
Density = mass divided by volume. 15/30 is 1/2 so the density is 1/2 or 0.5 g/cm
Answer:
If we use a thick foil, then more α particles would bounce back, and no idea about the location of positive mass in the atom would be available with such certainty.
Answer: for question 4, the answer would most likely be movement of air, water and rock
Explanation:
