This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What behavior do galactic rotation curves exhibit to suggest the existence of dark matter in an ... (Read 22 times)

pepyto

  • Hero Member
  • *****
  • Posts: 547
on: Jul 27, 2018
What behavior do galactic rotation curves exhibit to suggest the existence of dark matter in an extended halo?
 
  a. Small velocities are seen at large distances from the galactic center.
  b. Small velocities are seen at distances close to the galactic center.
  c. Large velocities are seen at large distances from the galactic center.
  d. Large velocities are seen at distances close to the galactic center.

Question 2

The carbon-nitrogen-oxygen cycle
 
  a. operates at a slightly lower temperature than the proton-proton chain.
  b. is most efficient in star less massive than the Sun.
  c. occurs when carbon and oxygen combine to form nitrogen, which produces energy.
  d. produces the energy responsible for bipolar flows.
  e. combines four hydrogen nuclei to form one helium nucleus, which produces energy.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

durant1234

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 27, 2018
Answer to Question 1

c

Answer to Question 2

e


pepyto

  • Member
  • Posts: 547
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

gcook

  • Member
  • Posts: 343
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

The first dark spot observed on Uranus. Image obtained by the HST ACS in 2006. The first dark spot observed on Uranus. Image obtained by the HST ACS in 2006.
Anatomically modern humans left archaeological clues, including evidence of burials, which indicate Anatomically modern humans left archaeological clues, including evidence of burials, which indicate
B. F. Skinner documented how operant conditioning changes behavior. B. F. Skinner documented how operant conditioning changes behavior.
The basal ganglia are clusters of gray matter that control learned movement and are involved with ... The basal ganglia are clusters of gray matter that control learned movement and are involved with ...
Effect of the direction of flagellar rotation Effect of the direction of flagellar rotation
Two Kinds of Forgetting Curves Two Kinds of Forgetting Curves
Video: Facilitated Diffusion - Glucose transport

For a complete list of videos, visit our video library