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

Author Question: Why must both parallax and proper motion be known to give transverse velocity? What will be an ... (Read 62 times)

chads108

  • Hero Member
  • *****
  • Posts: 507
on: Jul 27, 2018
Why must both parallax and proper motion be known to give transverse velocity?
 
  What will be an ideal response?

Question 2

Which of these is NOT typical of the Galaxy's spiral arms?
 
  A) open clusters
  B) Population II giants like orange Arcturus
  C) emission nebulae like M42
  D) hot, young blue Population I stars
  E) O and B stars


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Jordin Calloway

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 27, 2018
Answer to Question 1

To turn the star's apparent motion across our line of sight into its real velocity in that direction, we also need to know the actual distance from parallax data.

Answer to Question 2

B


chads108

  • Member
  • Posts: 507
Reply 2 on: Jul 27, 2018
Gracias!

ASDFGJLO

  • Member
  • Posts: 335
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The horizontal fraction bar was introduced by the Arabs.

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?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Range of Motion of the Hip Joint, Position of the Leg for Full External Rotation Range of Motion of the Hip Joint, Position of the Leg for Full External Rotation
Computerized axial ¬tomography (CAT) of the abdomen taken in the transverse plane. Computerized axial ¬tomography (CAT) of the abdomen taken in the transverse plane.
The answer to “What is the proper role of children in an economy?” varies by social class, ... The answer to “What is the proper role of children in an economy?” varies by social class, ...
Chemotactic motion of bacteria Chemotactic motion of bacteria
MOMENTUM AND IMP meteor(158 kg) is moving with a velocity of 127 m/s , and breaks into two ... MOMENTUM AND IMP meteor(158 kg) is moving with a velocity of 127 m/s , and breaks into two ...
Video: Protein catabolism - deamination

For a complete list of videos, visit our video library