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Author Question: What is the ratio of the escape speed of a rocket launched from sea level to the escape speed of one ... (Read 87 times)

frankwu

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on: Jul 29, 2018
What is the ratio of the escape speed of a rocket launched from sea level to the escape speed of one launched from Mt. Everest (an altitude of 8.85 km)? The radius of the earth is 6.38  106 m.
 
  A) 1.0007
  B) 1.0014
  C) 1.0001
  D) 0.9986
  E) 0.9993

Question 2

Communications and weather satellites always appear at the same place in the sky because these satellites are
 
  A) beyond the pull of Earth's gravitational field.
  B) moving at a speed just short of escape velocity.
  C) orbiting Earth with a 24-hour period.
  D) stationary in space.
  E) none of the above


helenmarkerine

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

Answer: C


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