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 60 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!

adammoses97

  • Member
  • Posts: 337
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Range of Motion of the Ankle and Foot, Eversion and Inversion Range of Motion of the Ankle and Foot, Eversion and Inversion
Body cavities. (A) Lateral view of a sagittal section through the body. (B) Anterior view of a front Body cavities. (A) Lateral view of a sagittal section through the body. (B) Anterior view of a front
Transverse Breaks the shaft of a bone across its longitudinal axis; the break is in the fibula, the Transverse Breaks the shaft of a bone across its longitudinal axis; the break is in the fibula, the
Constant velocity versus positive velocity Constant velocity versus positive velocity
Range of Motion at the Wrist. Range of Motion at the Wrist.
Petrissage with a flat hand. Apply compression across the abdomen in a wavelike motion. Push in ... Petrissage with a flat hand. Apply compression across the abdomen in a wavelike motion. Push in ...
Video: Wound Care

For a complete list of videos, visit our video library