[填空题]
A satellite of mass 5500 kg ork + ) zqyx/;yuxdk4nc lt;j68sbits the5 ycc yamgr99/ Earth $ \left(\operatorname{mass}=6.0 \times 10^{24} \mathrm{~kg}\right)$ and has a period of 6200 s . Find (a) the magnitude of the Earth's gravitational force on the satellite, $\approx$ $\times 10^4$
(b) the altitude of the satellite. $\times 10^5$
