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

Author Question: Which of the following methods used to determine the mass of a cluster of galaxies does not depend ... (Read 26 times)

mynx

  • Hero Member
  • *****
  • Posts: 555
on: Jul 27, 2018
Which of the following methods used to determine the mass of a cluster of galaxies does not depend on Newton's law of gravity?
 
  A) measuring the amount of distortion caused by a gravitational lens
  B) measuring the temperature of X-ray gas in the intracluster medium
  C) measuring the orbital velocities of galaxies in the cluster
  D) none of the above

Question 2

Cometary dust tails lag behind the bluish ion tails as the comet rounds the Sun.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ttt030911

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

TRUE


mynx

  • Member
  • Posts: 555
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

xthemafja

  • Member
  • Posts: 348
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

A Coronal Mass Ejection A Coronal Mass Ejection
Distant Galaxies Distant Galaxies
The sensing wire in a typical hot wire mass air flow sensor. The sensing wire in a typical hot wire mass air flow sensor.
Mass Wasting Forms Mass Wasting Forms
Cocaine, C17H21NO4, in urine can be confirmed by mass spectroscopy at a concentration of 150 ... Cocaine, C17H21NO4, in urine can be confirmed by mass spectroscopy at a concentration of 150 ...
Determine the mass of a nonvolatile, nonionizing compound that must be added to 4.76 kg of ... Determine the mass of a nonvolatile, nonionizing compound that must be added to 4.76 kg of ...
Video: Peptide Bond Formation Animation

For a complete list of videos, visit our video library