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Author Question: A double star system with each star having the mass of the Sun has an orbital period of 1 year. A ... (Read 56 times)

debasdf

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on: Jul 28, 2018
A double star system with each star having the mass of the Sun has an orbital period of 1 year. A second double star system, also with each star having the mass of the Sun, has an orbital period of 8 years. If the separation of the stars in the first system is d and the orbits in both cases are circular, what is the separation of the stars in the second system?
 a. 0.5d
  c. 4d
  b. 2d
  d. 8d

Question 2

An observation satellite for mapping purposes is placed in a low Earth orbit. In order to see the whole surface of the Earth, which would be the preferred orbit?
 a. an equatorial orbit
  c. an orbit inclined 45 to the equator
  b. a polar orbit
  d. It doesn't matter since the Earth turns completely every 24 hours.


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brittiany.barnes

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

C

Answer to Question 2

B


debasdf

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Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


brittiany.barnes

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Reply #3 on: Jul 28, 2018
Great! Please up vote :D


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