Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. These are called geosynchronous orbits. The altitude of a geosynchronous orbit is

Complete Question

Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. These are called geosynchronous orbits. The altitude of a geosynchronous orbit is 3.58×107m(≈22,000miles).

Part A

What is the period of a satellite in a geosynchronous orbit?

Part B

Find the value of g at this altitude.

Part A

    the period of a satellite in a geosynchronous orbit is 24 hours

Part B

    the  value of g at this altitude is  

Explanation:

From the question we are told that

    The altitude of the geosynchronous orbit is  

Generally 24 hr make up a day , which means that in 24 hours the earth does a complete rotation about its axis

 Now from the question we are told that communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotate.it then means that the communications satellites has the same time period as the earth given that it is in a fixed position with respect to the earth

Generally the value of g at this altitude is mathematically represented as

Here G is the gravitational constant with value

also  M  is the mass of the earth with value  

and  R is the radius of the earth with value  

=>  

d. platinum would have the greatest temperature increase because it has the lowest specific heat.