Question 7

A satellite in a circular orbit just above Earth's atmosphere must move at approximately what speed?

(R = radius of earth and g = gravitational field at surface)

• A.    gR
• B.    g/R
• C.    \( \sqrt{gR} \)
• D.    \( \sqrt{\frac{g}{R}} \)
• E.    Not close to any of the above

Question 6

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