Analyze the first 4 wavefunctions for the particle-in-a-1D square (-a/2, a/2). Which are cosine functions which...
Analyze the first 4 wavefunctions for the particle-in-a-1D square (-a/2, a/2). Which are cosine functions which are sine functions. Which are even and which are odd?
Homework Answers
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Analyze the first 4 wavefunctions for the particle-in-a-1D
square (-a/2, a/2). Which are cosine functions which...
1) Find the exact area bounded between the sine and cosine functions on the interval 4' 4 Clearly show your work in...
1) Find the exact area bounded between the sine and cosine functions on the interval 4' 4 Clearly show your work including a Riemann sum and a definite integral that represent the area of the region.
1) Find the exact area bounded between the sine and cosine functions on the interval 4' 4 Clearly show your work including a Riemann sum and a definite integral that represent the area of the region.
3. [Total: 24 pts] a) (8 pts) Calculate the probability of finding a particle in the...
3. [Total: 24 pts] a) (8 pts) Calculate the probability of finding a particle in the classically forbidden regime for the ground state of the 1D harmonic oscillator. Simplify the integral expression for the probability as much as possible - the integral can only be solved numerically. b) (8 pts) For the 1D harmonic oscillator, the energy eigenstates are either even or odd. This is indeed a special case of a more general statement: If V(x) is an even function...
Consider the 1D square potential energy well shown below. A particle of mass m is about to be tra...
Consider the 1D square potential energy well shown below. A particle of mass m is about to be trapped in it. a) (15 points) Start with an expression for this potential energy and solve the Schrödinger 2. wave equation to get expressions for(x) for this particle in each region. (10 points) Apply the necessary boundary conditions to your expressions to determine an equation that, when solved for E, gives you the allowed energy levels for bound states of this particle....
1 Particle in a Box with a Bump (based on B&J 4.11) Consider a particle of...
1 Particle in a Box with a Bump (based on B&J 4.11) Consider a particle of mass m in a 1-D double well with potential given by Vo, 05\x\<b V(x) = { 0, b<\x<c 100, [x]>c . We will study the lowest energy states, for which 0 <E<V, corresponding to tunnelling between the two wells. (a) Write down the time-independent Schödinger equation in the three regions -c<x<-b, –b< <b, and b< I< c. Write down the most general wavefunction solution...
The wavefunctions for a particle in a box are given by: ψn(x) = (2/L)^1/2 sin(nπx/L), with...
The wavefunctions for a particle in a box are given by: ψn(x) = (2/L)^1/2 sin(nπx/L), with n=1,2,3,4. . . . Let’s assume an electron is trapped in a box of length L = 0.5 nm. (a) Light of what wavelength is needed to excite the electron from the ground to the first excited state? (b) Will that wavelength increase or decrease, if you exchange the electron with a proton? Why?
Q4. Consider the 1D infinite square-well potential shown in the figure below. V(x) O0 Position (a)...
Q4. Consider the 1D infinite square-well potential shown in the figure below. V(x) O0 Position (a) State the time-independent Schrödinger equation within the region 0<x<L for a particle with positive energy E 2 marks] (b) The wavefunction for 0<x< L can be written in the general form y(x) = Asin kx + B cos kx. Show that the normalised wavefunction for the 1D infinite potential well becomes 2sn'n? ?snT/where ( "1,2,3 ! where ( n = 1,2,5, ). [4 marks]...
3. A particle is in a 1D box (infinite potential well) of dimension, a, situated symmetrically ab...
3. A particle is in a 1D box (infinite potential well) of dimension, a, situated symmetrically about the origin of the x-axis. A measurement of energy is made and the particle is found to have the ground state energy: 2ma The walls of the box are expanded instantaneously, doubling the well width symmetrically about the origin, leaving the particle in the same state. a) Sketch the initial potential well making it symmetric about x - 0 (note this is different...
Instead of assuming that a one-dimensional particle has no energy (v(x)=0), consider the case of a...
Instead of assuming that a one-dimensional
particle has no energy (v(x)=0), consider the case of a
one-dimensional particle which has finite, but constant, energy
V(x)= V sub zero.. Show that the ID particle in a box wave
functions. n(x)= A sin ((pi n x)/a). Also solve the Schrödinger
equation for this potential, and determine the energies En
Problem 2: Particle in a Box with Non-Zero Energy (2 points) Instead of assuming that a one-dimensional particle has no energy (V(x) =...
4. Answer the following short answer questions. a. For the particle in a square well, when...
4. Answer the following short answer questions. a. For the particle in a square well, when solving Schrödinger equation in all regions, one gets the following wavefunctions (where A,B,C,D,F, and G are constants): 4.(x) = Ce** + De-*** (x) = A cos Bx + B sin Bx m(x) = Fe*:* + Ge-*** where Region 1/2 [2m(V. - E) (2mE ki and B = Since there are six unknown constants, one needs six boundary conditions/constraints to complete the problem. State the...
Find the Fourier series representation (give 4 nonzero terms-include at least one cosine term and one...
Find the Fourier series representation (give 4 nonzero terms-include at least one cosine term and one sine term if both exist) of the following periodic function which in one period is given by: -2<x<0. f= 0 0<x<2 f = 1 2 A Avot w To 2 Find the Fourier series representation (give 4 nonzero terms-include at least one cosine term and one sine term if both exist) of the following periodic function which in one period is given by: -1<x<T...
1) Find the exact area bounded between the sine and cosine functions on the interval 4' 4 Clearly show your work including a Riemann sum and a definite integral that represent the area of the region.
1) Find the exact area bounded between the sine and cosine functions on the interval 4' 4 Clearly show your work including a Riemann sum and a definite integral that represent the area of the region.
3. [Total: 24 pts] a) (8 pts) Calculate the probability of finding a particle in the classically forbidden regime for the ground state of the 1D harmonic oscillator. Simplify the integral expression for the probability as much as possible - the integral can only be solved numerically. b) (8 pts) For the 1D harmonic oscillator, the energy eigenstates are either even or odd. This is indeed a special case of a more general statement: If V(x) is an even function...
Consider the 1D square potential energy well shown below. A particle of mass m is about to be trapped in it. a) (15 points) Start with an expression for this potential energy and solve the Schrödinger 2. wave equation to get expressions for(x) for this particle in each region. (10 points) Apply the necessary boundary conditions to your expressions to determine an equation that, when solved for E, gives you the allowed energy levels for bound states of this particle....
1 Particle in a Box with a Bump (based on B&J 4.11) Consider a particle of mass m in a 1-D double well with potential given by Vo, 05\x\<b V(x) = { 0, b<\x<c 100, [x]>c . We will study the lowest energy states, for which 0 <E<V, corresponding to tunnelling between the two wells. (a) Write down the time-independent Schödinger equation in the three regions -c<x<-b, –b< <b, and b< I< c. Write down the most general wavefunction solution...
Q4. Consider the 1D infinite square-well potential shown in the figure below. V(x) O0 Position (a) State the time-independent Schrödinger equation within the region 0<x<L for a particle with positive energy E 2 marks] (b) The wavefunction for 0<x< L can be written in the general form y(x) = Asin kx + B cos kx. Show that the normalised wavefunction for the 1D infinite potential well becomes 2sn'n? ?snT/where ( "1,2,3 ! where ( n = 1,2,5, ). [4 marks]...
3. A particle is in a 1D box (infinite potential well) of dimension, a, situated symmetrically about the origin of the x-axis. A measurement of energy is made and the particle is found to have the ground state energy: 2ma The walls of the box are expanded instantaneously, doubling the well width symmetrically about the origin, leaving the particle in the same state. a) Sketch the initial potential well making it symmetric about x - 0 (note this is different...
Instead of assuming that a one-dimensional
particle has no energy (v(x)=0), consider the case of a
one-dimensional particle which has finite, but constant, energy
V(x)= V sub zero.. Show that the ID particle in a box wave
functions. n(x)= A sin ((pi n x)/a). Also solve the Schrödinger
equation for this potential, and determine the energies En
Problem 2: Particle in a Box with Non-Zero Energy (2 points) Instead of assuming that a one-dimensional particle has no energy (V(x) =...
4. Answer the following short answer questions. a. For the particle in a square well, when solving Schrödinger equation in all regions, one gets the following wavefunctions (where A,B,C,D,F, and G are constants): 4.(x) = Ce** + De-*** (x) = A cos Bx + B sin Bx m(x) = Fe*:* + Ge-*** where Region 1/2 [2m(V. - E) (2mE ki and B = Since there are six unknown constants, one needs six boundary conditions/constraints to complete the problem. State the...
Find the Fourier series representation (give 4 nonzero terms-include at least one cosine term and one sine term if both exist) of the following periodic function which in one period is given by: -2<x<0. f= 0 0<x<2 f = 1 2 A Avot w To 2 Find the Fourier series representation (give 4 nonzero terms-include at least one cosine term and one sine term if both exist) of the following periodic function which in one period is given by: -1<x<T...
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