Author Question: What is the ratio of the escape speed of a rocket launched from sea level to the escape speed of one ... (Read 84 times)

frankwu

  • Hero Member
  • *****
  • Posts: 549
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

  • Sr. Member
  • ****
  • Posts: 324
Answer to Question 1

A

Answer to Question 2

Answer: C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

For a complete list of videos, visit our video library