They have solid, rocky surfaces they also have molten heavy-metal core, few moons , and topological features
Answer:
The moon moves because the earth rotates around its axis of rotation. Although the moon moves too around its orbit, the speed is too small to notice. In other words, the moon's position changes insignificantly, however, the earth rotates fast enough to notice.
Answer:
(a) 
(b) 
Explanation:
For Part(a)
Apply ∑Fy=ma
Solve for a
For Part(b)
Assume the maximum acceleration (maximum tension upwards is greater than the weight of the chain+boulder)
As the given data
Using equation of simple motion
<span>In the question, "Many scientists believe that the current period of global warming is related to increased levels of what?" The correct answer is carbon dioxide.
Global warming is a gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants."</span>
I believe it's 'A'. Hopefully this helps!~ :)
