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

Author Question: The high _______________ of quasars reveals to astronomers that they must be very distant. Fill ... (Read 35 times)

elizabeth18

  • Hero Member
  • *****
  • Posts: 559
on: Jul 27, 2018
The high _______________ of quasars reveals to astronomers that they must be very distant.
 
  Fill in the blank(s) with correct word

Question 2

We know that the central object in a planetary nebula has a surface temperature of at least ____ because the nebula contains large amounts of ionized hydrogen.
 
  a. 50 K
  b. 100 K
  c. 500 K
  d. 5,000 K
  e. 25,000 K


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cegalasso

  • Sr. Member
  • ****
  • Posts: 295
Reply #1 on: Jul 27, 2018
Answer to Question 1

redshift

Answer to Question 2

e


elizabeth18

  • Member
  • Posts: 559
Reply 2 on: Jul 27, 2018
Wow, this really help

irishcancer18

  • Member
  • Posts: 310
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Selected High-Risk Drugs for Older Adults Selected High-Risk Drugs for Older Adults
A high-performance aftermarket air filter often can increase airflow into the engine for more ... A high-performance aftermarket air filter often can increase airflow into the engine for more ...
Immunocytochemistry. This section through a rat’s substantia nigra reveals dopaminergic neurons ... Immunocytochemistry. This section through a rat’s substantia nigra reveals dopaminergic neurons ...
Ten Leading Causes of Death in High-Income Countries, 2008 Ten Leading Causes of Death in High-Income Countries, 2008
Using the fingertips of one hand, make contact with an area on the back with high fascial ... Using the fingertips of one hand, make contact with an area on the back with high fascial ...
The level of emissions from transport in the United States is twice as high as the global average The level of emissions from transport in the United States is twice as high as the global average
Video: Hydrogen bonds vs. Ionic bond

For a complete list of videos, visit our video library