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

Author Question: Why do astronomers believe that there is a large black hole, around 4 million times the mass of our ... (Read 38 times)

Themember4

  • Hero Member
  • *****
  • Posts: 538
on: Jul 27, 2018
Why do astronomers believe that there is a large black hole, around 4 million times the mass of our Sun, in the Galactic center?
 
  What will be an ideal response?

Question 2

All the following statements are true. Which one follows directly from Kepler's third law (p2 = a3)?
 
  A) Venus orbits the Sun at a slower average speed than Mercury.
  B) Venus is more massive than Mercury.
  C) Venus takes longer to rotate than it does to orbit the Sun.
  D) Venus has a thicker atmosphere than Mercury.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jonathanballen97

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 27, 2018
Answer to Question 1

Observations of the Galactic center show a large amount of energy being produced. Radio observations show a ring of gas with a high rotation speed around the center, showing a very large mass. The structure seen in higher resolution radio observations is peculiar. These observations are consistent with an accretion disk around a supermassive black hole.

Answer to Question 2

A


Themember4

  • Member
  • Posts: 538
Reply 2 on: Jul 27, 2018
:D TYSM

pangili4

  • Member
  • Posts: 346
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o
The Sun giving out a large geomagnetic storm The Sun giving out a large geomagnetic storm
The Mass-Luminosity Relation The Mass-Luminosity Relation
Post–Main-Sequence Evolution of Low-Mass Stars Post–Main-Sequence Evolution of Low-Mass Stars
A cutaway of a typical water pump showing the long bearing assembly and the seal. The weep hole is ... A cutaway of a typical water pump showing the long bearing assembly and the seal. The weep hole is ...
There has been a widespread loss of glacier mass globally There has been a widespread loss of glacier mass globally
Video: Causes of Angina

For a complete list of videos, visit our video library