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 68 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
:D TYSM

Jsherida

  • Member
  • Posts: 314
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Striking examples where high surface area releases heat. Striking examples where high surface area releases heat.
The high-voltage disconnect switch is in the trunk area on a Toyota Prius. High-voltage lineman’s ... The high-voltage disconnect switch is in the trunk area on a Toyota Prius. High-voltage lineman’s ...
A gasoline direct-injection system injects fuel under high pressure directly into the combustion ... A gasoline direct-injection system injects fuel under high pressure directly into the combustion ...
The developing and emerging nations have high rates of population growth The developing and emerging nations have high rates of population growth
X-ray showing pneumonia. Fluid and blood cells fill the lungs X-ray showing pneumonia. Fluid and blood cells fill the lungs
Chalk cliffs 90 meters (300 feet) high along the shore in Dover, England, were once seafloor Chalk cliffs 90 meters (300 feet) high along the shore in Dover, England, were once seafloor
Video: Chemical Changes

For a complete list of videos, visit our video library