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

Author Question: Compare the speed of spiral density waves with the orbital speeds of stars in the visible part of ... (Read 33 times)

RODY.ELKHALIL

  • Hero Member
  • *****
  • Posts: 591
on: Jul 27, 2018
Compare the speed of spiral density waves with the orbital speeds of stars in the visible part of the Galactic disk.
 
  What will be an ideal response?

Question 2

The two Voyager spacecraft carry a message from Earth, just in case an alien civilization ever runs across them.
 
  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

bubulittle310@msn.cn

  • Sr. Member
  • ****
  • Posts: 281
Reply #1 on: Jul 27, 2018
Answer to Question 1

Spiral density waves move slower than the orbital speeds at the same distance from the center of a galaxy.

Answer to Question 2

TRUE


RODY.ELKHALIL

  • Member
  • Posts: 591
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

juliaf

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

A shed carapace of a lady crab, part of the hard exoskeleton A shed carapace of a lady crab, part of the hard exoskeleton
How to use L’Hospital’s Rule to find the limit of a function (Part 1) How to use L’Hospital’s Rule to find the limit of a function (Part 1)
How to find the domain of a natural logarithmic functions (Part 2) How to find the domain of a natural logarithmic functions (Part 2)
How to convert verbal statements into algebraic equations (Part 2) How to convert verbal statements into algebraic equations (Part 2)
Astronaut Rachel leaves Earth in a spaceship at a speed of 0.960c relative to an observer on ... Astronaut Rachel leaves Earth in a spaceship at a speed of 0.960c relative to an observer on ...
Question 37 Part 2 Question 37 Part 2
Video: Coaductile pathway, Timing of contraction signal & Conduction system and ECG

For a complete list of videos, visit our video library