1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ivolga24 [154]
4 years ago
5

Utilizing the charge neutrality equation and the mass-action law derive an expression for the concentration of electrons and hol

es present inside a p-type compensated semiconductor material. How can the resulting expression be modified for practical cases where (????????AA − ????????DD) ≫ 2nn�
Engineering
1 answer:
dedylja [7]4 years ago
8 0

Answer:

The expression for the concentration of electrons is P = NA - ND

Explanation:

Please look at the solution in the attached Word file

Download docx
You might be interested in
Why is a universal joint useful?
zubka84 [21]

Answer:

the are useful because they transmit a rotary motion they are used in shafts like the driveshaft in a car

Explanation:

3 0
4 years ago
What are creativity, leadership, & time management examples of ?
xxTIMURxx [149]

Managing your time well can help you improve in your career. Organizing each day helps you to complete work on time, stay engaged during important meetings and give you space to be creative and proactive in your tasks. Having strong time-management skills can ultimately lead to accomplishing key goals and advancing in your position. In this guide, we discuss the meaning of time management, why it is important and how you can both improve upon and showcase your skills during the job search.

hope this helps :):):):):)

7 0
3 years ago
Base course aggregate has a target dry density of 119.7 lb/cu ft in place. It will be laid down and compacted in a rectangular s
natita [175]

Answer:

total weight of aggregate =  5627528 lbs = 2814 tons  

Explanation:

given data

dry density = 119.7 lb/cu ft

area = 2000 ft × 48 ft × 6 in

aggregate = 3.1%

required compaction = 95%

solution

we get  here volume of space to be filled with aggregate that is

volume = 2000 × 48 × 0.5 = 48000 ft³

when here space fill with aggregate of density is

density = 0.95 × 119.7    = 113.72 lb/ft³

and

dry weight of this aggregate will be  is

dry weight = 48000 × 113.72 = 5458320 lbs

and

we consider take percent moisture by weigh so that there weight of moisture in aggregate is express as

weight of moisture = 0.031 × 5458320 = 169208 lbs

and

total weight of aggregate will be

total weight of aggregate = 5458320 + 169208

total weight of aggregate =  5627528 lbs = 2814 tons  

5 0
3 years ago
A sample of semiconductor has a cross sectional area of 1cm^2 and a thickness of 0.1cm.
pogonyaev

Answer:

a. 3.17*10¹⁹ b. 3.17*10¹⁴

Explanation:

a. Area A = 1cm²

Thickness h = 0.1cm

Energy of photon E = hf=hc/λ

Where f = frequency; c=speed of light; λ=wavelength = 6300Α=6300*10⁻¹⁰;

Planck's constant h = 6.626*10⁻³⁴ joule-seconds; speed of light c = 3*10⁸

Therefore E = (6.626*10⁻³⁴)*3*10⁸/6300*10⁻¹⁰=3.155*10¹⁹J

1Watt of light releases 3.17*10¹⁸ photons per second.

Volume of sample = Area * Thickness = 1*0.1=0.1cm³

Therefore, number of electron hole pairs that are generated per unit volume per unit time = 3.17*10¹⁸/0.1 = 3.17*10¹⁹photon/cm³-s

b. Steady state excess carrier concentration = 3.17*10¹⁹*10μs

=3.17*10¹⁹*10*10⁻⁶

=3.17*10¹⁴/cm³

6 0
3 years ago
How does the "E" in STEM work with the other letters
KIM [24]

Answer:

if you are speaking of the acronym then Engineering uses science and mathematics to solve everyday problems in society

4 0
4 years ago
Other questions:
  • The displacement volume of an internal combustion engine is 2.2 liters. The processes within each cylinder of the engine are mod
    13·1 answer
  • The Clausius inequality expresses which of the following laws? i. Law of Conservation of Mass ii. Law of Conservation of Energy
    8·1 answer
  • As an input signal drives the base voltage in a positive direction, base current will_____ and collector current will _____.
    5·1 answer
  • An alloy has a yield strength of 41 ksi, a tensile strength of 57 ksi, and an elastic modulus of 16 * 106 psi. A cylindrical spe
    5·1 answer
  • A workpiece of 2000 mm length and 300 mm width was machined by a planning operation with the feed set at 0.3 mm/stroke. If the m
    11·1 answer
  • Braking is when you squeeze the brake pedal until just before the wheels lock the ease off the pedal then squeeze again repeatin
    6·2 answers
  • What causes a roller coaster to move.
    8·1 answer
  • _____ are used to control the flow of electricity in a circuit.
    8·2 answers
  • Advatnage and disadvantages of gas turbine engine ?
    14·1 answer
  • If you are being tailgated and need to make a stop, you should
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!