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 45 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
Wow, this really help


mcabuhat

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Excellent

 

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

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?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

For a complete list of videos, visit our video library