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

Author Question: If WIMPs really exist and make up most of the dark matter in galaxies, which of the following is not ... (Read 44 times)

809779

  • Hero Member
  • *****
  • Posts: 579
on: Jul 27, 2018
If WIMPs really exist and make up most of the dark matter in galaxies, which of the following is not one of their characteristics?
 
  A) They travel at speeds close to the speed of light.
  B) They are subatomic particles.
  C) They can neither emit nor absorb light.
  D) They tend to orbit at large distances from the galactic center.

Question 2

For what type of object is the period-luminosity relation used for determining distances?
 
  A) RR Lyrae variables
  B) T Tauri variables
  C) Cepheids
  D) Cataclysmic variables
  E) Planetary nebulae


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cadimas

  • Sr. Member
  • ****
  • Posts: 362
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

C


809779

  • Hero Member
  • *****
  • Posts: 579
Reply #2 on: Jul 27, 2018
TY


cadimas

  • Sr. Member
  • ****
  • Posts: 362
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

All objects in the image are distant galaxies – not stars All objects in the image are distant galaxies – not stars
The nurse can make observations about the patient's general appearance while talking with the p The nurse can make observations about the patient's general appearance while talking with the p
Gray matter and White matter Gray matter and White matter
Spiral Galaxies Seen Nearly Edge On from the Milky Way Spiral Galaxies Seen Nearly Edge On from the Milky Way
The Canadian ballot is considerably simpler than the American ballot. Note there is nothing like a c The Canadian ballot is considerably simpler than the American ballot. Note there is nothing like a c
A good disinfecting solution you can make yourself consists of 1 part bleach to 10 parts water. A good disinfecting solution you can make yourself consists of 1 part bleach to 10 parts water.
Video: Functional zones in a mitochondrion

For a complete list of videos, visit our video library