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

Author Question: The source of all electromagnetic waves is A) changes in atomic energy levels. B) vibrating ... (Read 420 times)

imanialler

  • Hero Member
  • *****
  • Posts: 539
The source of all electromagnetic waves is
 
  A) changes in atomic energy levels.
  B) vibrating atoms and molecules.
  C) accelerating electric charges.
  D) crystalline fluctuations.
  E) none of the above

Question 2

In free space, electromagnetic waves travel at a
 
  A) variety of speeds.
  B) single speed.
  C) speed depending on frequency.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

TheNamesImani

  • Sr. Member
  • ****
  • Posts: 334
Answer to Question 1

Answer: C

Answer to Question 2

Answer: B



imanialler

  • Hero Member
  • *****
  • Posts: 539
Both answers were spot on, thank you once again




 

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

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