A synchronous satellite should be at a proper height moving

A geo-synchronous satellite is:

A geo-synchronous satellite is:

A geostationary satellite should be at a height nearly…… km above the equator of earth.

Statement 1. Geo synchronous satellites are required to provide the communication link over the whole part of the earth. Statement 2. The height of geo-synchronous orbit is about 36,000 km from the equator.

To have an earth satellite synchronous with the rotation of the earth, it must be launched at proper height moving

To have an earth satellite synchronous with the rotation of the earth, it must be launched at proper height moving

How many geo-synchronous satellites are required to provide the communication over the whole part of the earth ?

What are polar synchronous satellites ?