A geostationary satellite has a orbital radius of 4.23*10.7m.

a). calculate it's speed in orbit

Answer;

Note : Satellite completes one orbit in the same time the earth rotates one about its axis

circumference of the orbit = 2 * π * 4.23*10⁷ (similar to the earth orbital speed

The time of earth/orbit traveled = 23.93 hrs,

Speed of the orbit = (distance) : (time)

= circumference : time

= (2 * π * 4.23*10⁷) : 23.93 (1 hr = 3600 sec.)

= 3085.14 m/s

The orbital velocity is 3085.14 m/s