Average Velocity= displacement/time Av=50/0.50 Av=100
Answer:
Yes
Explanation:
The four outer planets are all gas giants made primarily of hydrogen and helium. They have thick gaseous outer layers and liquid interiors.
An electron is emitted in both positive and negative beta decay, although the positive one is called positron emission.
Answer:
Substances can change phase—often because of a temperature change. At low temperatures, most substances are solid; as the temperature increases, they become liquid; at higher temperatures still, they become gaseous. The process of a solid becoming a liquid is called melting.