This topic contains a solution. Click here to go to the answer

Author Question: Spiral arms are obviouseasily-seen featuresbecause they contain ____. a. dense molecular clouds ... (Read 113 times)

Zulu123

  • Hero Member
  • *****
  • Posts: 525
Spiral arms are obviouseasily-seen featuresbecause they contain ____.
 
  a. dense molecular clouds
  b. atomic hydrogen clouds
  c. sun-like stars
 d. OB associations
 e. supernovae

Question 2

The second postulate of special relativity states that ____.
 
  a. observers cannot detect their uniform motion except relative to other objects
 b. observers cannot distinguish locally between inertial forces and uniform gravitational forces due to acceleration and the presence of a massive body
 c. the laws of physics are the same for all observers regardless of their motion as long as their speed is constant
  d. the speed of light is constant and will be the same for all observers independent of their motion relative to the light source
  e. the acceleration of an object is proportional to the applied force and inversely proportional to its mass



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

234sdffa

  • Sr. Member
  • ****
  • Posts: 341
Answer to Question 1

d

Answer to Question 2

d




Zulu123

  • Member
  • Posts: 525
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)


brbarasa

  • Member
  • Posts: 308
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

There are more bacteria in your mouth than there are people in the world.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

For a complete list of videos, visit our video library