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 radius of the earth is 6.37 × 10⁶ m, and the altitude of a geosynchronous orbit is 3.58 × 10⁷ m (»22,000 miles²). What are

(a) The speed and

(b) The magnitude of the acceleration of a satellite in a geosynchronous orbit?