6. (a) Equate the relationships for the gravitational force on the satellite and the centripetal force for circular mo-Lion to determine an expression for the speed of the satellite as

it orbits the Earth.it (b) How is the speed of an Earth-orbiting satellite related to the height at which the satellite is above the Earth's surface? (c) Calculate the speed of the American meteorological satellite N(OAA 11which has a circular orbit at a height of850 km above the Earth's surface. Use the information from Table 8-1 onp. 159 in your text book. (d) The speed of the satellite at a given height determines how long it takes the satellite to orbit the Earth once.Calculate the time it will take NOAA 11to complete one orbit. (e) How in any orbits will NOAA 11make in one lay? (f) If the time for one orbit of an Earth-orbiting satellite travelling parallel to the equator is 24 hours, then the satellite will appear to be "parked" in space. Calculate the speed of a satellite which is "parked" in space. (g) The parking orbit is called a"geosynchronous orbit." It is very important because it is the main orbit used for TV and telephone communication satellites. Some meteorological satellites such as the US satellites "GocsEast" and "Goes West" are also in geosynchronous orbits. Explain why communication satellites and some meteorological satellites are placed in geosynchronous orbits.