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

Author Question: Spurs are probably the result of ____. a. self-sustaining star formation b. spiral density waves ... (Read 40 times)

tiffannnnyyyyyy

  • Hero Member
  • *****
  • Posts: 512
on: Jul 27, 2018
Spurs are probably the result of ____.
 
  a. self-sustaining star formation
  b. spiral density waves
 c. differential rotation
 d. the central galactic bar
 e. the short lifetime of O stars

Question 2

The equivalence principle can be best illustrated by ____.
 
  a. a person riding in an elevator
 b. a rocket coasting through space at a constant velocity
  c. the change in mass of a moving body
 d. the formation of energy by nuclear fusion
 e. a car ride on a highway with the windows open


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Carissamariew

  • Sr. Member
  • ****
  • Posts: 359
Reply #1 on: Jul 27, 2018
Answer to Question 1

a

Answer to Question 2

a


tiffannnnyyyyyy

  • Member
  • Posts: 512
Reply 2 on: Jul 27, 2018
:D TYSM

samiel-sayed

  • Member
  • Posts: 337
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Normal artery versus plaque formation Normal artery versus plaque formation
Tornado Formation: Tornadoes around the globe. Tornado Formation: Tornadoes around the globe.
As shown in the figure, a large open tank contains a layer of oil ( density 450 kg/m3) floating ... As shown in the figure, a large open tank contains a layer of oil ( density 450 kg/m3) floating ...
The density of Pb(s) is 11.34 g/cm3. Pb(s) exists in the cubic-closest packed structure The density of Pb(s) is 11.34 g/cm3. Pb(s) exists in the cubic-closest packed structure
Physics - Density and Pressure Physics - Density and Pressure
Hormonal pathways that influence sperm formation Hormonal pathways that influence sperm formation
Video: Pressure volume relationships - Normal inspiration and expiration

For a complete list of videos, visit our video library