Find the ground state energy

In summary, the ground state energy is the lowest possible energy that a quantum mechanical system can have, and it is typically calculated using mathematical models such as the Schrödinger equation or the Heisenberg uncertainty principle. This energy level is important for understanding the behavior and properties of a system, and it cannot be changed. Finding the ground state energy has both theoretical and practical significance in fields such as quantum mechanics and materials science.
  • #1
szamito
4
0
[SOLVED] Find the ground state energy

1. A particle is confined to a one dimensional box. Two possible state functions and the corresponding energies for the particles are shown in the figure. Find the ground state energy.

EA=4eV

EB=9eV


Homework Equations



E_n=(n^2 h)/(8mL^2 ); E_1=h/(8mL^2 ) then E_n=n^2 E_1

The Attempt at a Solution



E2 =4eV=22E1 then E1=1eV=1,6*10-19 J
 

Attachments

  • pic.png
    pic.png
    10.1 KB · Views: 483
Physics news on Phys.org
  • #2
szamito said:
...

The Attempt at a Solution



E2 =4eV=22E1 then E1=1eV=1,6*10-19 J

okay, yes. And apparently by "22" you mean [itex]2^2[/itex].
 

What is the ground state energy?

The ground state energy is the lowest possible energy that a quantum mechanical system can have. It is the energy level that particles in a system will occupy at absolute zero temperature.

How is the ground state energy calculated?

The ground state energy is typically calculated using mathematical models such as the Schrödinger equation or the Heisenberg uncertainty principle. These models take into account the properties of the system, such as the mass and charge of the particles involved.

Why is the ground state energy important?

The ground state energy is important because it provides a baseline for understanding the behavior and properties of a system. It helps scientists predict how particles will interact and how the system will behave at higher energy levels.

Can the ground state energy be changed?

No, the ground state energy is a fundamental property of a system and cannot be changed. However, the energy level of a particle in a system can change if it is given additional energy through external sources, such as heat or light.

What is the significance of finding the ground state energy?

Finding the ground state energy is significant because it allows scientists to better understand the behavior of matter at a fundamental level. It also has practical applications in fields such as quantum mechanics and materials science.

Similar threads

Using Variational Principle to solve ground state energy
    • Advanced Physics Homework Help
Replies
3
Views
960
Ground state energy of 5 electrons in infinite well
    • Advanced Physics Homework Help
Replies
11
Views
2K
Find Ground State Energy of 3D Harmonic Oscillator
    • Advanced Physics Homework Help
Replies
4
Views
1K
Ground state and 1st excited state energy of 3 Fermions
    • Advanced Physics Homework Help
Replies
6
Views
2K
Ground state of 3 noninteracting Fermions in an infinite well
    • Advanced Physics Homework Help
Replies
4
Views
3K
Stark effect: find ground state
    • Advanced Physics Homework Help
Replies
1
Views
2K
A Ground state energy of a particle-in-a-box in coordinate scaling
    • Quantum Physics
Replies
4
Views
945
Change in ground state energy due to perturbation
    • Advanced Physics Homework Help
Replies
7
Views
1K
Nuclear shell model of double magic nucleus 132Sn
    • Advanced Physics Homework Help
Replies
1
Views
731
Degeneracy of the energy level
    • Introductory Physics Homework Help
Replies
6
Views
1K

Hot Threads

Recent Insights

Back
Top