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Eccentricity of an Elliptical Orbit 2008-08-20
From Gina:
A satellite has an elliptical orbit around the earth with one focus at the earth’s center, E. The earth’s radius is 4,000 miles. The highest point that the satellite is from the surface of the earth is 800 miles, and the lowest is 200 miles. What is the eccentricity of the satellite’s orbit?
Answered by Janice Cotcher.
Orbital velocity 2006-02-15
From Lizzie:

Assume the world is a spherical planet with a diameter of 1600 KM. with a uniform density or 5200 KM.

It the moon is in a circular orbit of 630 KM. above the surface of the world,what is it's orbital velocity in metres per second?Round to the nearest WHOLE number.


Answered by Stephen La Rocque.
 
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