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

Author Question: How is proper motion measured? What will be an ideal response? ... (Read 10 times)

123654777

  • Hero Member
  • *****
  • Posts: 585
on: Jul 27, 2018
How is proper motion measured?
 
  What will be an ideal response?

Question 2

Any main sequence star over 25 solar masses will probably retain enough matter in its core after its type II supernova to make a black hole.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Tonyam972

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jul 27, 2018
Answer to Question 1

It is the apparent motion of the star, in seconds of arc, over an interval of exactly one year, after the Earth returns to the same place in its orbit, and all parallax is negated.

Answer to Question 2

TRUE


123654777

  • Member
  • Posts: 585
Reply 2 on: Jul 27, 2018
Wow, this really help

sultana.d

  • Member
  • Posts: 320
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Range of Motion of the Cervical Spine, Rotation Range of Motion of the Cervical Spine, Rotation
The relationship of substrate con- version (as measured by optical density) to the amount of patient ... The relationship of substrate con- version (as measured by optical density) to the amount of patient ...
Range of motion at the shoulder and hip joints Cont. Range of motion at the shoulder and hip joints Cont.
Orbital Motion of Earth and Other Planets Orbital Motion of Earth and Other Planets
The Body's Response to Blood Loss The Body's Response to Blood Loss
From Signal Reception to Response From Signal Reception to Response
Video: Metaphase I Animation

For a complete list of videos, visit our video library