Author Question: Galactic fountains are an important way to explain _____. a. the distribution of metals in and ... (Read 10 times)

fasfsadfdsfa

  • Hero Member
  • *****
  • Posts: 554
Galactic fountains are an important way to explain _____.
 
  a. the distribution of metals in and above the plane of the galactic disk
  b. the nature of dark matter
 c. the formation of the galactic disk from the first stages of our galaxy
  d. the generation and support of spiral density waves
 e. why the spiral arms are active sites of star formation

Question 2

The force due to the gravity between two objects depends on the ____,
 
  a. combined mass and velocity of both objects
 b. mass of each object and the distance between them
 c. distance of each object from Earth and distance between them
  d. speed of light and the distance of each object from Earth
 e. mass of each object and the speed of light



zhanghao

  • Sr. Member
  • ****
  • Posts: 316
Answer to Question 1

a

Answer to Question 2

b



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

For a complete list of videos, visit our video library