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

Author Question: How are astronomers able to determine that quasars are so small? a. They are variable over a ... (Read 31 times)

Mr3Hunna

  • Hero Member
  • *****
  • Posts: 536
on: Jul 27, 2018
How are astronomers able to determine that quasars are so small?
 
  a. They are variable over a short period of time.
  b. They emit mainly X-rays.
  c. They are only found at very large distance.
  d. The structure of a quasar is completely resolved in images.

Question 2

Stars with masses between 0.4-Mo and 4-Mo
 
  a. undergo thermonuclear fusion of hydrogen and helium, but never get hot enough to ignite carbon.
  b. undergo thermonuclear fusion of hydrogen, but never get hot enough to ignite helium.
  c. produce type I supernovae after they exhaust their nuclear fuels.
  d. produce type II supernovae after they exhaust their nuclear fuels.
  e. undergo carbon detonation.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

T4T

  • Sr. Member
  • ****
  • Posts: 348
Reply #1 on: Jul 27, 2018
Answer to Question 1

a

Answer to Question 2

a


Mr3Hunna

  • Member
  • Posts: 536
Reply 2 on: Jul 27, 2018
Gracias!

jomama

  • Member
  • Posts: 346
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Small Pearl-bordered Fritillary Small Pearl-bordered Fritillary
The Xenopus frog tadpole is a small, simple vertebrate. The Xenopus frog tadpole is a small, simple vertebrate.
Small Town USA: Struggling to Survive Small Town USA: Struggling to Survive
How to determine if a quadratic equation has a maximum or minimum when given the roots How to determine if a quadratic equation has a maximum or minimum when given the roots
Nutrients Are Absorbed through the Small Intestine Nutrients Are Absorbed through the Small Intestine
The Scale of the Very Small and Very Large: Powers of 10 The Scale of the Very Small and Very Large: Powers of 10
Video: Ionic bonds - role of ions in the body

For a complete list of videos, visit our video library