what are artificial satellites & find its speed around the earth at height h.
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To stay in orbit, a satellite has to travel at a very high velocity, which depends on the height. So, typically, for a circular orbit at a height of 300 km above the Earth's surface, a speed of 7.8 km/s (28,000 km/h) is needed. At this speed, the satellite will complete one orbit around the Earth in 90 minutes.12-Oct-2011
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what are artificial satellite also find its speed at a height h
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