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

Author Question: Contrast open clusters and associations. What will be an ideal ... (Read 35 times)

MGLQZ

  • Hero Member
  • *****
  • Posts: 579
on: Jul 27, 2018
Contrast open clusters and associations.
 
  What will be an ideal response?

Question 2

According to our definition, we have been a technological civilization for about
 
  A) 500 years. B) 100 years. C) 10 years. D) 1000 years. E) 10,000 years.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

rnehls

  • Sr. Member
  • ****
  • Posts: 313
Reply #1 on: Jul 27, 2018
Answer to Question 1

Open clusters contain more stars, are better bound gravitationally, and will last much longer-hundreds of millions or billions of years. Associations are less massive clusters spanning a larger region of space, they are less bound, and will break up in tens of millions of years as the Galaxy spins.

Answer to Question 2

B


MGLQZ

  • Member
  • Posts: 579
Reply 2 on: Jul 27, 2018
Wow, this really help

Mochi

  • Member
  • Posts: 300
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Your heart beats over 36 million times a year.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

(A) Closed (or simple) fracture and (B) open (or compound) fracture. (A) Closed (or simple) fracture and (B) open (or compound) fracture.
Examples of open and closed ended questons Examples of open and closed ended questons
A combination wrench has an open end at one end and a box end at the other end. A combination wrench has an open end at one end and a box end at the other end.
Block open the throttle (and choke, if the engine is equipped with a carburetor). Here a screwdriver ... Block open the throttle (and choke, if the engine is equipped with a carburetor). Here a screwdriver ...
Gate control theory. A. open gate, B. closed gate Gate control theory. A. open gate, B. closed gate
Under ideal conditions, a single cell of the bacterium E. coli would divide every 20 minutes to ... Under ideal conditions, a single cell of the bacterium E. coli would divide every 20 minutes to ...
Video: Stress and Immune System Animation

For a complete list of videos, visit our video library