Author Question: In a good insulator, the highest energy band containing electrons, called the valence band, is A) ... (Read 69 times)

yoooooman

  • Hero Member
  • *****
  • Posts: 557
In a good insulator, the highest energy band containing electrons, called the valence band, is
 
  A)
 
  only partially filled.
  B)
 
  completely filled.

Question 2

Two in-phase loudspeakers are placed 6.00 m apart along one wall of a room. They emit sound with a frequency of 512Hz.
 
  Starting at the location of one of the loudspeakers, a microphone is moved in a direction perpendicular to the wall until constructive interference is detected for the first time. How far is the microphone from the wall at that point? The speed of sound in air is 330 m/s. A)
 
  0.141 m
 
  B)
 
  0.664 m
 
  C)
 
  0.203 m
 
  D)
 
  0.138 m
 
  E)
 
  0.282 m



Anna

  • Sr. Member
  • ****
  • Posts: 343
Answer to Question 1

B

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

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.

For a complete list of videos, visit our video library