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

Author Question: Identify a true statement about quasars. A) Their spectra are similar to the spectra of stars. ... (Read 80 times)

joblessjake

  • Hero Member
  • *****
  • Posts: 555
on: Jul 27, 2018
Identify a true statement about quasars.
 
  A) Their spectra are similar to the spectra of stars.
  B) Their spectra do not show any redshift.
  C) They exhibit fluctuations in their brightness over time scales of hours or minutes.
  D) They are supermassive structures with a diameter of 20 to 50 Mpc.

Question 2

The brilliant nuclei of Seyfert galaxies change brightness rapidly, in only a few hours or minutes, especially at _____.
 
  A) microwave wavelengths
  B) visible light wavelengths
  C) gamma ray wavelengths
  D) X-ray wavelengths


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

tashiedavis420

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

D


joblessjake

  • Hero Member
  • *****
  • Posts: 555
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


tashiedavis420

  • Sr. Member
  • ****
  • Posts: 329
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

The same star field photographed with (a) a ground-based telescope, which is subject to poor seeing The same star field photographed with (a) a ground-based telescope, which is subject to poor seeing
Stellar Size and Spectra Stellar Size and Spectra
Stars and the Interstellar Medium Stars and the Interstellar Medium
Example of Reconciling a Bank Statement Example of Reconciling a Bank Statement
Midsagittal section indicating locations of true and false pelves Midsagittal section indicating locations of true and false pelves
A diagram showing one of Mendel’s crosses. True-breeding strains of pea plants with smooth and ... A diagram showing one of Mendel’s crosses. True-breeding strains of pea plants with smooth and ...
Video: Major Elements in Biological Molecules: Lipids

For a complete list of videos, visit our video library