Recent content by evildarklord1985
-
E
How Does Expanding a Quantum Potential Well Affect Particle Probability?
sorry i don't think i encountered any kinds of problem like this in the course...this is a bonus homework of my professor to toture us for Spring break...anyway, what kind of calculation can you do to calculate the overlapping probability you mentioned?- evildarklord1985
- Post #9
- Forum: Advanced Physics Homework Help
-
E
How Does Symmetry Simplify Quantum Harmonic Oscillator Integrals?
but then how do you actually carry out the intergration?- evildarklord1985
- Post #7
- Forum: Advanced Physics Homework Help
-
E
How Does Expanding a Quantum Potential Well Affect Particle Probability?
so, how do i go from what i had to get the solution? I'm confused...how do you actually calculate the probability of finding a particle in its certain state of energy level? All I know is probability of finding the particle in a region of the box...- evildarklord1985
- Post #7
- Forum: Advanced Physics Homework Help
-
E
How Does Expanding a Quantum Potential Well Affect Particle Probability?
oh ok...so with this expression of k , I can write the energy level equation as : E= n^2 * h^2 / 16m a^2...but the question asks about finding the probability of finding the particle. Isn't the total probability just 1 in the whole space?- evildarklord1985
- Post #5
- Forum: Advanced Physics Homework Help
-
E
How Does Symmetry Simplify Quantum Harmonic Oscillator Integrals?
so, the harmonic wave function can be written as : N H(y) exp(-1/2 alpha x^2) . With the mentioned boundary condition, do I get N*H(y) = 0 ...how would I go from here on to solve the problem?- evildarklord1985
- Post #5
- Forum: Advanced Physics Homework Help
-
E
How Does Expanding a Quantum Potential Well Affect Particle Probability?
sorry...i thought of using the same method we normally do for particle-in-the-box problem, where psi(x) = A sin(kx) + B cos(kx) . Then, using boundary condition of psi(x)=0 at x=0 , and x=2a... From, psi(0) = 0, B =0 From , psi(2a) =0 ; I got : A sin(2ka) = 0 So, 2ka = n * pi or, k =...- evildarklord1985
- Post #3
- Forum: Advanced Physics Homework Help
-
E
How Does Symmetry Simplify Quantum Harmonic Oscillator Integrals?
My first thought about this problem is trying to set up a boundary condition for the wavefunction. For 0<x<A, the wavefunction takes the form of simple harmonic oscillators, i.e. N exp(-1/2 alpha x^2) . With boundary condition where psi(x) = 0 at x=0, I'm stuck with the expression of N=0. Maybe...- evildarklord1985
- Post #3
- Forum: Advanced Physics Homework Help
-
E
How Does Symmetry Simplify Quantum Harmonic Oscillator Integrals?
- evildarklord1985
- Thread
- Harmonic Quantum
- Replies: 8
- Forum: Advanced Physics Homework Help
-
E
How Does Expanding a Quantum Potential Well Affect Particle Probability?
Quantum mechanics- help!? An innitely deep one-dimensional potential well runs from x = 0 to x = a. Let a particle be placed in the ground state corresponding to this system. Then, within innitly short time, expand the potential well so that it now runs from x = 0 to x = 2a. If the energy of...- evildarklord1985
- Thread
- Mechanics Quantum Quantum mechanics
- Replies: 9
- Forum: Advanced Physics Homework Help
-
E
Solve Particle-on-a-Ring Problem: Normalize & Write as Linear Combination
I have troubles to do this one problem dealing with particle-on-a-ring, Suppose we have a wavefunction as, g(phi) = cos(phi) + 2 sin(2phi) First, normalize the function g(phi). By inspection, or otherwise, write g(phi) as a linear combination of eigenfunction of Lz. State what possible...- evildarklord1985
- Thread
- Particle Ring
- Replies: 1
- Forum: Advanced Physics Homework Help
-
E
Absolutely no idea how to solve these
I'm asking you guys for serious help in these homework for Engineering physics. 1) Protons having a kinetic energy of 5.00 Me are moving in the positive x direction and enter a magnetic field B = 0.050k (T) directed out of the plane of the page and extending from x=0 to x=1.0 m . Calculate...- evildarklord1985
- Thread
- Idea No idea
- Replies: 1
- Forum: Introductory Physics Homework Help