« previous next »

Author Question: The source of electromagnetic waves is vibrating A) electric charges. B) atoms. C) molecules. ... (Read 30 times)

Bernana

  • Hero Member
  • *****
  • Posts: 530
on: Jul 29, 2018
The source of electromagnetic waves is vibrating
 
  A) electric charges.
  B) atoms.
  C) molecules.
  D) energy fields.

Question 2

If an electric charge is rapidly shaken up and down,
 
  A) sound is emitted.
  B) light is emitted.
  C) electron excitation occurs.
  D) an electromagnetic wave is produced.


uniquea123

  • Sr. Member
  • ****
  • Posts: 311
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

The electromagnetic spectrum. The electromagnetic spectrum.
Sources of ring atoms Sources of ring atoms
An electric sphygmomanometer. An electric sphygmomanometer.
Place sheet or towel over area to be heated. Use sufficient heat barrier for the heat source used. ... Place sheet or towel over area to be heated. Use sufficient heat barrier for the heat source used. ...
Apply the cold source, and ask for immediate feedback. Conform the cold source to the shape of the ... Apply the cold source, and ask for immediate feedback. Conform the cold source to the shape of the ...
Waves Approaching the Shore Waves Approaching the Shore
Video: Medullary osmotic gradient - influencing factors

For a complete list of videos, visit our video library