« previous next »

Author Question: In a p-type semiconductor, a hole is A) an extra proton supplied by a donor atom. B) an extra ... (Read 91 times)

cookcarl

  • Hero Member
  • *****
  • Posts: 539
on: Jul 29, 2018
In a p-type semiconductor, a hole is
 
  A) an extra proton supplied by a donor atom.
  B) an extra electron supplied by a donor atom.
  C) a donor atom.
  D) a region where an electron is missing.
  E) a missing atom in the crystalline structure.

Question 2

A window glass that is 0.5 cm thick has dimensions of 3 m by 1.5 m. The thermal conductivity of this glass is 0.8 W/m  K.
 
  If the outside surface of the glass is at -10C and the inside surface is at 20C, how much heat flows through the window in every hour?
  A) 50 MJ
  B) 60 MJ
  C) 70 MJ
  D) 80 MJ


ilianabrrr

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

The iron atom of heme has six coordination bonds: four in the plane The iron atom of heme has six coordination bonds: four in the plane
Atom formation Atom formation
Kitagawa Utamaro, The Fickle Type, from the series Ten Physiognomies of Women. Kitagawa Utamaro, The Fickle Type, from the series Ten Physiognomies of Women.
a) Type IV hypersensitivity reaction, contact dermatitis as the result of reaction to the nickel in ... a) Type IV hypersensitivity reaction, contact dermatitis as the result of reaction to the nickel in ...
Structure of a complex of a type II DNA methylase with DNA Structure of a complex of a type II DNA methylase with DNA
Do you know why ballpoint pens caps have that small hole? Do you know why ballpoint pens caps have that small hole?
Video: Mendel's pea plant, Pisum sativum experimental

For a complete list of videos, visit our video library