Answer:
Following are the solution to the given question:
Explanation:
Please find the complete question in the attached file.


Distance:


Kinetic energy is your answer
A. The core is the densest layer
The Earth's core is far denser than any of the Earth's other layers. The high density is due to the immense pressure being exerted at the center of the Earth. Moreover, the Earth's center is the point where the Earth's gravity can be said to act, which means the gravitational force from the Earth is also the greatest there. The core is also composed of heavy metallic elements such as nickel, adding to its density.
Answer:
The speed of the satellite is 7809.52 m/s
Explanation:
It is given that,
Radius of Earth, 
Mass of earth, 
A satellite moves in a circular orbit a distance of,
above Earth's surface.
We need to find the speed of the satellite. It is given by :

R = r + d

So, 
v = 7809.52 m/s
So, the speed of the satellite is 7809.52 m/s. Hence, this is the required solution.