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

Author Question: How is the age of the galaxy determined? a. measuring the metallicity of Population II stars b. ... (Read 96 times)

Shelles

  • Hero Member
  • *****
  • Posts: 582
on: Jul 27, 2018
How is the age of the galaxy determined?
 
  a. measuring the metallicity of Population II stars
  b. finding the turnoff point in the H-R diagram of globular clusters
  c. from the motion of stars in the galactic halo
  d. counting the number of open clusters in the spiral arms

Question 2

The free-fall contraction of a molecular cloud
 
  a. can be initiated by shock waves from supernovae.
  b. can be initiated by nearby spectral type G stars.
  c. can be initiated by the rotation of the cloud.
  d. causes the cloud to become transparent to ultraviolet radiation.
  e. causes the particles in the cloud to decrease the speed with which they move.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Pswine

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 27, 2018
Answer to Question 1

b

Answer to Question 2

a


Shelles

  • Member
  • Posts: 582
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

Joy Chen

  • Member
  • Posts: 354
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Natural selection of a population for dark coloration. Natural selection of a population for dark coloration.
Two-Point Threshold Device for Measuring Touch Acuity Two-Point Threshold Device for Measuring Touch Acuity
Measuring fluid and crystalized intelligence Measuring fluid and crystalized intelligence
Measuring Blood Pressure Measuring Blood Pressure
Measuring Pediatric Vital Signs Measuring Pediatric Vital Signs
Measuring the resistance of an HEI pickup coil using a digital multimeter set to the ohms position. ... Measuring the resistance of an HEI pickup coil using a digital multimeter set to the ohms position. ...
Video: Osmosis - Isotonic, Hypotonic, and Hypertonic​ Solutions

For a complete list of videos, visit our video library