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

Author Question: Our Sun is considered to be a(n) ________. A) brown dwarf B) low-mass star C) high-mass star D) ... (Read 28 times)

nramada

  • Hero Member
  • *****
  • Posts: 580
on: Jul 27, 2018
Our Sun is considered to be a(n) ________.
 
  A) brown dwarf B) low-mass star
  C) high-mass star D) intermediate-mass star

Question 2

How do X-ray measurements help us measure the amount of dark matter in galaxy clusters?
 
  A) X-rays are emitted by hot gas, and the intracluster gas is heated by collisions with dark matter particles. More dark matter leads to greater heating, and hence stronger X-ray emission.
  B) Dark matter absorbs X-rays. Therefore, more dark matter leads to weaker X-ray emission from galaxy clusters.
  C) X-rays are emitted by hot gas, and the intracluster gas is heated by the gravitational effects of dark matter. More dark matter leads to greater heating, and hence stronger X-ray emission.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

javimendoza7

  • Sr. Member
  • ****
  • Posts: 293
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

C


nramada

  • Member
  • Posts: 580
Reply 2 on: Jul 27, 2018
:D TYSM

Perkypinki

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

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

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

A very high-resolution texture of the planet Mars A very high-resolution texture of the planet Mars
Canadian Dwarf Cinquefoil Canadian Dwarf Cinquefoil
Radial and Transverse Velocities of a Star Radial and Transverse Velocities of a Star
What is the mass % of H2S04 in concentrated sulfuric acid? What is the mass % of H2S04 in concentrated sulfuric acid?
What is the isotopic atomic mass of an isotope if 9.7023 1022 atoms weighs 4.0256 g? What is the isotopic atomic mass of an isotope if 9.7023 1022 atoms weighs 4.0256 g?
Video: Premenstrual Syndrome

For a complete list of videos, visit our video library