# Find the ground state energy

• szamito
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.

#### szamito

[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

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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 $2^2$.

## 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.