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An artificial satellite is moving in a circular orbit of radius 42250 km. Calculate its speed if it takes 24 hours to revolve around the Earth.

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Answer Text

Answer :
speed `=3.07 km s^(-1)`
Solution :
Radius of the circular orbit, r = 42250 km <br> Time taken to revolve around the earth, t = 24h <br> Speed of a circular moving object, v = (`2pir`)/t <br> = `[2xx(22//7)xx42250xx1000]//(24xx60xx60)` <br> = `(2xx22xx42250xx1000)//(7xx24xx60xx60)` m `s^(-1)` <br> = 3073.74 m `s^(-1)

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