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October 23, 2014

October 23, 2014

Posted by **Leanna** on Sunday, March 24, 2013 at 11:03am.

2. What is the speed of a satellite orbiting at that height?

- Physics -
**Elena**, Sunday, March 24, 2013 at 5:32pm1.

g =GM/R²

g₁=GM/(R+h)²

g₁/g=30/100= GM R²/(R+h)²GM =>

0.3= R²/(R+h)²

Solve for “h” (Earth’s radius is R = 6.378•10⁶ m)

2.

mv²/(R+h)= GmM/(R+h)²

v=sqrt { GM/(R+h)}

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