A remote sensing satellite of the earth ...

A remote sensing satellite of the earth revolves in a circular orbit at a height of 250 km above the earth's surface. What is the (i) orbital speed and (ii) period of revolution of the satellite ? Radius of the earth, `R=6.38xx10^(6)` m, and acceleration due to gravity on the surface of the earth, `g=9.8 ms^(-2)`.

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