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

Author Question: Which of the following is not a conserved quantity? A) energy B) momentum C) angular momentum ... (Read 43 times)

pane00

  • Hero Member
  • *****
  • Posts: 579
Which of the following is not a conserved quantity?
 
  A) energy
  B) momentum
  C) angular momentum
  D) radiation

Question 2

In 1924, Edwin Hubble proved that the Andromeda Galaxy lay far beyond the bounds of the Milky Way, thus putting to rest the idea that it might have been a cloud within our own galaxy. How was he able to prove this?
 
  A) He proved this by observing individual Cepheid variable stars in Andromeda and applying the period-luminosity relation.
  B) He was able to measure the parallax of the Andromeda Galaxy.
  C) He found that the universe is expanding, and therefore concluded that Andromeda must lie outside our own galaxy.
  D) He was the first person ever to look through a telescope at the object we now call the Andromeda Galaxy.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ecox1012

  • Sr. Member
  • ****
  • Posts: 344
Answer to Question 1

D

Answer to Question 2

A




pane00

  • Member
  • Posts: 579
Reply 2 on: Jul 27, 2018
Gracias!


  • Member
  • Posts:
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

For a complete list of videos, visit our video library