Exam-style question
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Which condition must be met for a satellite to be in a geostationary orbit?.
- A.The satellite must orbit at a height of 36,000 km above the Earth's surface.
- B.The satellite must have a circular orbit.
- C.The satellite must have a speed greater than 7.9 km/s.
- D.The satellite must be in a polar orbit.
Model answer
What a good answer should say
- The satellite must orbit at a height of 36,000 km above the Earth's surface.
Explanation
Why this works
For a satellite to maintain a geostationary orbit, it must be positioned approximately 36,000 km above the Earth's equator, allowing it to match the Earth's rotational speed.
Common mistake
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