Easy
An artificial satellite of mass $m$ revolves around the earth at a height $h$ with a speed $v$. How much power (energy per second) will it require to keep itself moving with constant speed in the orbit of radius $r$?
- A$\frac{m v^3}{r}$
- B$\frac{1}{2} m v^2$
- C$\frac{6 m M_e}{\left(R_e+h\right)}$
- D$0$
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