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A particle moves in an infnite potential well described by V(r) o, l> a/2. are of...
A particle moves in an infinite potential well described by The eigenfunctions are of the form...
A particle moves in an infinite potential well described by The eigenfunctions are of the form (r) = A For n = 3. e3(r) = (v/2/n) cos(3mr/n) for lrl cos (knr), or er (r) = Dn sin (k, r), depending E0 for o/2 and t's(r)- (a) What are the expectation values of r and 2 in the n 3 state. (b) What are the expectation values of p and p2 in the n 3 state. To calculate the expectation value...
A particle on a sphere is described by the state function Ψ = N {1 +...
A particle on a sphere is described by the state function Ψ = N {1 + cos(θ)} Find a) the value of the normalization constant N b) the expectation value of the energy E c) the possible values of the z component of angular momentum (Lz) that might be measured, and which of these possibilities is most likely.
1. Given a state y(r) expanded on the eigenstates of the Hamiltonian for the electron, H, in a hydrogen atom: where the...
1. Given a state y(r) expanded on the eigenstates of the Hamiltonian for the electron, H, in a hydrogen atom: where the subscript of E is n, the principal quantum number. The other two numbers are the 1 and m values, find the expectation values of H (you may use the eigenvalue equation to evaluate for H), L-(total angular momentum operator square), Lz (the z-component of the angular momentum operator) and P (parity operator). Draw schematic pictures of 1 and...
2. A particle of mass m in the infinite square well of width a at time...
2. A particle of mass m in the infinite square well of width a at time 1 - 0 has wave function that is an equal weight mixture of the two lowest n= 1,2 energy stationary states: (x,0) - C[4,(x)+42(x)] (a) Normalize the wave function. Hints: 1. Exploit the orthonormality of W, 2. Recall that if a wave function is normalized at t = 0, it stays normalized. (b) Find '(x, t) and (x,1)1at a later time 1>0. Express Y*...
Consider a particle of mass in a 10 finite potential well of height V. the domain...
Consider a particle of mass in a 10 finite potential well of height V. the domain – a < x < a. a) Show that solutions for – a < x < a take the form on (x) = A cos(knx) for odd n, and on (x) = A sin(knx) for even n. . Show a) Match the boundary conditions at x = a to prove that cos(ka) = Bk where k is the wave vector for -a < x...
5. Part 1. (6 pt) An electron moves around a 2D ring with ring radius 0.50 nm in the state m --20...
5. Part 1. (6 pt) An electron moves around a 2D ring with ring radius 0.50 nm in the state m --20. Determine the wavelength (in nm) of the particle wave induced by this electron. (similar to a question in Exam 1) Part 2. (a) (7pt) A wavefunction is given by y, (e, 4-B sin cos(6). Can this function be an eigenfunction of Legendrían operator (A2.sunagatsineaesin暘for a quantum particle moving around a spherical surface)? If so, determine the eigenvalue and...
In the ground state of the H atom, n = 1,l=0 R_1,0 (r)=2/(a^(3/2) ) e^(-ρ/2), Y_0,0=1/√4π...
In the ground state of the H atom, n = 1,l=0 R_1,0 (r)=2/(a^(3/2) ) e^(-ρ/2), Y_0,0=1/√4π Write down ψ_(n,l,m) (r,θ,ϕ) What is the expectation value of the radial momentum, which you may evaluate in the reduced ρ coordinate, i.e., obtain the expectation value of the p =ℏ/i d/dρ. Does the answer seem to contradict with the Bohr model?
problem 2 Professor A Abdurrahman's Course on Quantum Mechanics Quantum Mechanics I- Problem Set No. 3...
problem 2
Professor A Abdurrahman's Course on Quantum Mechanics Quantum Mechanics I- Problem Set No. 3 Due to 04/30/2018. Late homework will not be accepted. Problem 1 Prove that Hint. Direct computation. Problem 2 We have been dealing with real potential V (x) so far so now suppose that V (a) is complea. Compute dt Problem 3 For the Gaussian a) 1 /4 Compute (a) (z") for all alues of n integer, and (b) Compute fors(x) given above. Hint: ?...
Question #2: 6 pts] Find the eigenvalues and the normalized eigenvectors of the matrix 21 2...
Question #2: 6 pts] Find the eigenvalues and the normalized eigenvectors of the matrix 21 2 -1 2 Question #3: 10 pts] The electron in a hydrogen atom is a linear combination of eigenstates. Let us assume a limited linear combination to provide some sample calculations $(r, θ, φ) 2 ,1,0,0 + '2,1,0 (a) Normalize the above equation. (b) What are the possible results of individual measurements of energy, angular momentum, and the z-component of angular momentum? (c) What are...
1. The quantum states of a particle moving freely in a circle of radius r are...
1. The quantum states of a particle moving freely in a circle of radius r are described by (0) = Cewe where C is a constant, e denotes angle, n = 0, +1, +2,... is an integer identifying the quantum state of the particle, and wn is constant for a given n. a) Show that Un0 satisfies don d02 b) Find wn such that Un (@+ 2) = Un) c) Find the value of such that any two yn (0)...
A particle moves in an infinite potential well described by The eigenfunctions are of the form (r) = A For n = 3. e3(r) = (v/2/n) cos(3mr/n) for lrl cos (knr), or er (r) = Dn sin (k, r), depending E0 for o/2 and t's(r)- (a) What are the expectation values of r and 2 in the n 3 state. (b) What are the expectation values of p and p2 in the n 3 state. To calculate the expectation value...
1. Given a state y(r) expanded on the eigenstates of the Hamiltonian for the electron, H, in a hydrogen atom: where the subscript of E is n, the principal quantum number. The other two numbers are the 1 and m values, find the expectation values of H (you may use the eigenvalue equation to evaluate for H), L-(total angular momentum operator square), Lz (the z-component of the angular momentum operator) and P (parity operator). Draw schematic pictures of 1 and...
2. A particle of mass m in the infinite square well of width a at time 1 - 0 has wave function that is an equal weight mixture of the two lowest n= 1,2 energy stationary states: (x,0) - C[4,(x)+42(x)] (a) Normalize the wave function. Hints: 1. Exploit the orthonormality of W, 2. Recall that if a wave function is normalized at t = 0, it stays normalized. (b) Find '(x, t) and (x,1)1at a later time 1>0. Express Y*...
Consider a particle of mass in a 10 finite potential well of height V. the domain – a < x < a. a) Show that solutions for – a < x < a take the form on (x) = A cos(knx) for odd n, and on (x) = A sin(knx) for even n. . Show a) Match the boundary conditions at x = a to prove that cos(ka) = Bk where k is the wave vector for -a < x...
5. Part 1. (6 pt) An electron moves around a 2D ring with ring radius 0.50 nm in the state m --20. Determine the wavelength (in nm) of the particle wave induced by this electron. (similar to a question in Exam 1) Part 2. (a) (7pt) A wavefunction is given by y, (e, 4-B sin cos(6). Can this function be an eigenfunction of Legendrían operator (A2.sunagatsineaesin暘for a quantum particle moving around a spherical surface)? If so, determine the eigenvalue and...
problem 2
Professor A Abdurrahman's Course on Quantum Mechanics Quantum Mechanics I- Problem Set No. 3 Due to 04/30/2018. Late homework will not be accepted. Problem 1 Prove that Hint. Direct computation. Problem 2 We have been dealing with real potential V (x) so far so now suppose that V (a) is complea. Compute dt Problem 3 For the Gaussian a) 1 /4 Compute (a) (z") for all alues of n integer, and (b) Compute fors(x) given above. Hint: ?...
Question #2: 6 pts] Find the eigenvalues and the normalized eigenvectors of the matrix 21 2 -1 2 Question #3: 10 pts] The electron in a hydrogen atom is a linear combination of eigenstates. Let us assume a limited linear combination to provide some sample calculations $(r, θ, φ) 2 ,1,0,0 + '2,1,0 (a) Normalize the above equation. (b) What are the possible results of individual measurements of energy, angular momentum, and the z-component of angular momentum? (c) What are...
1. The quantum states of a particle moving freely in a circle of radius r are described by (0) = Cewe where C is a constant, e denotes angle, n = 0, +1, +2,... is an integer identifying the quantum state of the particle, and wn is constant for a given n. a) Show that Un0 satisfies don d02 b) Find wn such that Un (@+ 2) = Un) c) Find the value of such that any two yn (0)...
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