This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A sound with a frequency of 25 kHz is in the ______________ region of the sound spectrum. a. ... (Read 76 times)

theo

  • Hero Member
  • *****
  • Posts: 698
on: Jul 28, 2018
A sound with a frequency of 25 kHz is in the ______________ region of the sound spectrum.
 a. infrasonic
  b. ultrasonic
  c. audible
  d. visible

Question 2

An energy band in a solid consists of
 a. an infinite number of levels, with each level corresponding to a point in a box.
  b. a large number of energy levels so closely spaced that they may be regarded as a continuous band.
  c. an infinite number of wave functions, with each wave function corresponding to a point in a box.
  d. a large number of electrons so closely spaced that they may be regarded as a continuous band of electric charge.
  e. an infinite number of electrons, with each electron corresponding to a point in a box.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Amiracle

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

b


theo

  • Hero Member
  • *****
  • Posts: 698
Reply #2 on: Jul 28, 2018
Thank you!


Amiracle

  • Sr. Member
  • ****
  • Posts: 334
Reply #3 on: Jul 28, 2018
Always glad to help...


« previous next »
 

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

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?

Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

The adrenal glands. These glands sit on top of each kidney. Each adrenal is subdivided into an outer The adrenal glands. These glands sit on top of each kidney. Each adrenal is subdivided into an outer
Balmer Lines in the Spectrum of a Star Balmer Lines in the Spectrum of a Star
Frederick Douglass, having escaped from slavery in 1836, attracted large audiences as an antislavery Frederick Douglass, having escaped from slavery in 1836, attracted large audiences as an antislavery
The inguinal area. Take great care when applying deep pressure in this region The inguinal area. Take great care when applying deep pressure in this region
RNA base sequence of the trp leader region RNA base sequence of the trp leader region
The frequency of bipolar illness in members of monozygotic twin pairs and in first-degree relatives The frequency of bipolar illness in members of monozygotic twin pairs and in first-degree relatives
Video: Role of ATP in muscle movement

For a complete list of videos, visit our video library