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
Vedmedyk [2.9K]
3 years ago
15

What is the length of a one-dimensional box in which an electron in the n=1 state has the same energy as a photon with a wavelen

gth of 800 nm ?
Physics
1 answer:
Pie3 years ago
3 0

Answer:

Length will be 0.491 nm

Explanation:

We have given wavelength of the photon \lambda =800nm=800\times 10^{-9}m

Plank's constant h=6.6\times 10^{-34}J-s

We know that energy of the photon is given by

E=\frac{hc}{\lambda }=\frac{6.6\times 10^{-34}\times 3\times 10^8}{800\times \times 10^{-9}}=2.475\times 10^{-19}J

We know that energy of photon is also given by

E=\frac{n^2h^2}{8mL^2}=\frac{h^2}{8mL^2}

2.475\times 10^{-19}=\frac{(6.6\times 10^{-34})^2}{8\times 9.1\times 10^{-31}\times L^2}

L=0.491\times 10^{-9}m

You might be interested in
At 45 degrees s latitude, the angle of the noon sun is lowest and the length of daylight is shortest on:
Marat540 [252]

Answer;

- June 21

At 45 degrees latitude, the angle of the noon sun is lowest and the length of daylight is shortest on June 21.

Explanation;

-On June 21 you will note that the Northern Hemisphere is pitched toward the Sun. This means that the Sun's vertical ray is striking the Earth at the Tropic of Cancer (23.5 degrees N).

-Days tend to get longer in the northern hemisphere from December 21 to June 21, and then grow shorter from June 21 to December 21.  The June solstice is the summer solstice in the Northern Hemisphere and the winter solstice in the Southern Hemisphere. The date varies between June 20 and June 22, depending on the year, and the local time zone.

8 0
3 years ago
What does the number, or density, of field lines on a source charge indicate?
Harrizon [31]

Hello.

The answer: C. amount of charge on the source charge

The field lines all represent the movements of field charges.  The more crowded the field lines or the more density of electric field the higher is the magnitude of the source charge.

Have a  nice day.

6 0
3 years ago
Read 2 more answers
ANSWER ASAPPPPPPPP BEING TIMED
Dmitrij [34]
C) above, the Earth's core is about the melting point of iron.
8 0
3 years ago
Read 2 more answers
What are the cahnges that a force can bring out on a body ? <br><br><br>Give examples
djyliett [7]
Hi Pupil Here is your answer ::




➡➡➡➡➡➡➡➡➡➡➡➡➡



1 The shape of the Body

Example : The shape of the ball lying on a floor can be changed by pressing it.


2 Direction of the Body

Example : The direction of motion of moving ball can be changed by hitting it with a bat.


3 The speed of the Body

Example : A ball at rest can be set in motion if force is applied only


4. Size of the Body

Example : The length of a spring tied and on one end can be increased by pulling it.




⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅




Hope this helps .......
5 0
3 years ago
Read 2 more answers
The diagram below shows a food web.
Mekhanik [1.2K]
i think it’s B. sorry if i’m wrong
8 0
3 years ago
Read 2 more answers
Other questions:
  • There is an increasing demand for berries in Paul’s town. He wants to cultivate berries to earn profits. To do so, he wants to c
    12·1 answer
  • Power can be expressed
    10·1 answer
  • Which of the following air conditions would be least likely to have precipitation 10 pts
    14·1 answer
  • Why is the handle made of a different material than the rest of the pot?
    9·2 answers
  • Evaluate the final kinetic energy of the supply spacecraft for the actual tractor beam force, F(x)=αx3+βF(x)=αx3+β.
    12·1 answer
  • In one eight-hour workday, a forklift operator at a particular distribution warehouse lifts a total of 100,000 N of boxes. Each
    11·1 answer
  • A 5-kg object slides down a frictionless surface inclined at an angle of 30º from the horizontal. The total distance moved by th
    6·1 answer
  • Electromagnets in radios can be used to A) play a CD. B) create sound. C) change the station. D) make a remote control.
    13·2 answers
  • What are the kinematic formulas?​
    14·1 answer
  • A velocity selector consists of a uniform electric field of 3.4*10^6 V/m and a uniform magnetic field of 42.0 mT, perpendicular
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!