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Author Question: Dark matter is ___. a. a cloud of black holes and brown dwarfs in the galactic halo b. extremely ... (Read 47 times)

jCorn1234

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on: Jul 27, 2018
Dark matter is ___.
 
  a. a cloud of black holes and brown dwarfs in the galactic halo
 b. extremely cold, supermassive molecular clouds in the disk
 c. an unknown type of mass that does not emit or absorb photons
  d. the substance of which black holes are made
 e. a theory to explain galactic formation that has been proven wrong

Question 2

The circular velocity of a satellite orbiting Earth is given by . In this equation, M represents the ____.
 
  a. mass of the satellite, and r its radius
 b. mass of the satellite, and r the distance from Earth to the satellite
 c. mass of the satellite, and r the distance from Earth's surface to the satellite
  d. mass of Earth, and r the radius of Earth
 e. mass of Earth, and r is the distance from Earth to the satellite


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Sweetkitty24130

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

c

Answer to Question 2

e


jCorn1234

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Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

samiel-sayed

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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