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A geosynchcronous satellite is one that stays above the same point on the Earth, that is...

A geosynchcronous satellite is one that stays above the same point on the Earth, that is it rotates with the same angular velocity than Earth. This is possible only if the satellite is above a point on the equator. Determine:
a) The height above the Earth's surface such satellite must orbit?

b) What is the satellite speed?

c) If the satellite is orbiting 200 km above Earth, what is the satellite speed?

( Remember G=6.67x10-11 N m2/kg2, MEarth = 5.98x1024 Kg, REarth = 6380 km)

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