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Author Question: The following objects are found in a spiral arm of a galaxy. Which is the exception? a. ... (Read 36 times)

stock

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on: Jul 27, 2018
The following objects are found in a spiral arm of a galaxy. Which is the exception?
 
  a. population II stars
 b. OB associations
 c. emission nebulae
 d. population I stars
 e. clouds of gas and dust

Question 2

If the orbital velocity of the Moon is 1.0 km/s, what is the orbital velocity of a satellite that is 1/16th as far from Earth as the Moon? Hints: There is a long way and a short way to do this calculation. ; G = 6.67 10-11 m3/s2/kg
 
  a. 1/16 km/s
  b. 1/8 km/s
 c. 4 km/s
 d. 8 km/s
 e. 16 km/s


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iceage

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Reply #1 on: Jul 27, 2018
Answer to Question 1

a

Answer to Question 2

c


stock

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

mohan

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Reply 3 on: Yesterday
Gracias!

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