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Author Question: What is the kinetic energy of a 200-kg satellite as it follows a circular orbit of radius 8.0 106 m ... (Read 90 times)

mikaylakyoung

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on: Jul 28, 2018
What is the kinetic energy of a 200-kg satellite as it follows a circular orbit of radius 8.0  106 m around the Earth? (Mass of Earth = 6.0  1024 kg.)
 a. 5.0  109 J
  b. 1.0  1010 J
  c. 1.5  1010 J
  d. 2.0  1010 J
  e. 2.5  109 J

Question 2

A spacecraft (mass = m) orbits a planet (mass = M) in a circular orbit (radius = R). What is the minimum energy required to send this spacecraft to a distant point in space where the gravitational force on the spacecraft by the planet is negligible?
 a. GmM/(4R)
  b. GmM/R
  c. GmM/(2R)
  d. GmM/(3R)
  e. 2GmM/(5R)


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livaneabi

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Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

C


mikaylakyoung

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Reply 2 on: Jul 28, 2018
Wow, this really help

ttt030911

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Reply 3 on: Yesterday
Excellent

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