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 74 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

cassie_ragen

  • Member
  • Posts: 347
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

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.

The life cycle of a zygomycete, the black bread mould Rhizopus stolonifer. The life cycle of a zygomycete, the black bread mould Rhizopus stolonifer.
Alligators are apex predators capable of killing large terrestrial prey. This large AAmerican alliga Alligators are apex predators capable of killing large terrestrial prey. This large AAmerican alliga
Pacific Black Duck at Austins Ferry, Tasmania, Australia Pacific Black Duck at Austins Ferry, Tasmania, Australia
Large facial tumor due to malignant Burkitt’s lymphoma, a non-Hodgkin’s lymphoma. Large facial tumor due to malignant Burkitt’s lymphoma, a non-Hodgkin’s lymphoma.
A solution of CaCl2 with concentration of 5.5 M was diluted 10 times, 25 times and 3 times. ... A solution of CaCl2 with concentration of 5.5 M was diluted 10 times, 25 times and 3 times. ...
Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an ... Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an ...
Video: Audiology

For a complete list of videos, visit our video library