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

Author Question: A 100 million-year-old open cluster will no longer contain any O-type stars. Indicate whether the ... (Read 67 times)

j.rubin

  • Hero Member
  • *****
  • Posts: 557
on: Jul 27, 2018
A 100 million-year-old open cluster will no longer contain any O-type stars.
 
  Indicate whether the statement is true or false

Question 2

What do we mean when we say that the rotation curve for a spiral galaxy is flat?
 
  A) Gas clouds orbiting far from the galactic center have approximately the same orbital speed as gas clouds located further inward.
  B) The amount of light emitted by stars at different distances is about the same throughout the galaxy.
  C) All the galaxy's mass is concentrated in its flat, gaseous disk.
  D) The disk of a spiral galaxy is quite flat rather than spherical like the halo.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

emilymalinowski12

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

TRUE

Answer to Question 2

A


j.rubin

  • Hero Member
  • *****
  • Posts: 557
Reply #2 on: Jul 27, 2018
Thanks


emilymalinowski12

  • Sr. Member
  • ****
  • Posts: 338
Reply #3 on: Jul 27, 2018
Welcome :)


« previous next »
 

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Blood-typing and cross-reactions: The blood type depends on the presence of surface antigens (agglut Blood-typing and cross-reactions: The blood type depends on the presence of surface antigens (agglut
Why Different Constellations Are Visible at Different Times of the Year Why Different Constellations Are Visible at Different Times of the Year
Kitagawa Utamaro, The Fickle Type, from the series Ten Physiognomies of Women. Kitagawa Utamaro, The Fickle Type, from the series Ten Physiognomies of Women.
World Total Energy Consumption by Fuel Type World Total Energy Consumption by Fuel Type
A pipe that is 0.46 m long and open at both ends vibrates in the second overtone with a ... A pipe that is 0.46 m long and open at both ends vibrates in the second overtone with a ...
Video: Functional zones in a mitochondrion

For a complete list of videos, visit our video library