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

Author Question: A__________is a type of active galaxy nucleus that is especially variable and has few or no spectral ... (Read 16 times)

nenivikky

  • Hero Member
  • *****
  • Posts: 516
on: Jul 27, 2018
A__________is a type of active galaxy nucleus that is especially variable and has few or no spectral emission lines.
 
  A) blazar
  B) pulsar
  C) quasar
  D) quark

Question 2

In the context of measuring the properties of galaxies, a__________is an object of known brightness that astronomers use to find distance.
 
  A) black hole
  B) white dwarf
  C) standard candle
  D) red giant


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kardosa007

  • Sr. Member
  • ****
  • Posts: 300
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

C


nenivikky

  • Member
  • Posts: 516
Reply 2 on: Jul 27, 2018
Excellent

ricroger

  • Member
  • Posts: 352
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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.

Variable expressivity Variable expressivity
Herniated disk. A herniated disk is a protrusion of the disk’s gelatinous center, called the nucleus Herniated disk. A herniated disk is a protrusion of the disk’s gelatinous center, called the nucleus
The Host Galaxy of a Gamma-Ray Burst The Host Galaxy of a Gamma-Ray Burst
Nucleus. Nucleus.
The driver information display on a Chevrolet Impala with a 5.3 liter V-8 equipped with active fuel ... The driver information display on a Chevrolet Impala with a 5.3 liter V-8 equipped with active fuel ...
Active Transport in Vesicles: Phagocytosis Active Transport in Vesicles: Phagocytosis
Video: Oogenesis Animation

For a complete list of videos, visit our video library