Physics

Problem

(Take

G=6.67\times10^{-11}\,\text{N m}^2\text{/kg}^2

and

M_{\oplus}=5.97\times10^{24}\,\text{kg}

.) A satellite is placed in a circular orbit

700\,\text{km}

above Earth’s surface. If Earth’s radius is

6.4\times10^{3}\,\text{km}

, the orbital speed of the satellite is closest to a)

10.6\,\text{km s}^{-1}

7.9\,\text{km s}^{-1}

7.5\,\text{km s}^{-1}

8.3\,\text{km s}^{-1}