It's momentum is twice as much.
Answer:
net force is positive downward..B
This attraction occurs from adhesion, also known as adsorption <span />
Answer:
B. An Iron Bar place in a room becomes cooler than its surroundings.
Answer: Because new theories can come out that better explain observations and experimental results can replace old theories.
Explanation: Theories more than ten years old are usually out of date. Scientists want to prove that the work of other scientists is wrong. New evidence that supports a change prompts scientists to modify earlier theories.
