Author Question: In astronomical usage, all atoms heavier than helium are referred to as__________. A) metals B) ... (Read 44 times)

panfilo

  • Hero Member
  • *****
  • Posts: 572
In astronomical usage, all atoms heavier than helium are referred to as__________.
 
  A) metals
  B) Population I atoms
  C) halos
  D) dark matter

Question 2

__________is a graph of orbital velocity versus radius in the disk of a galaxy.
 
  A) A rotation curve
  B) A normal distribution
  C) The H-R diagram
  D) The light curve



Cnarkel

  • Sr. Member
  • ****
  • Posts: 339
Answer to Question 1

A

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

panfilo

  • Hero Member
  • *****
  • Posts: 572
Both answers were spot on, thank you once again



Cnarkel

  • Sr. Member
  • ****
  • Posts: 339

 

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

For a complete list of videos, visit our video library