Physics Homework Solutions

Why is E=0 a not acceptable value for phi?

On an exam recently, I was given a potential well problem and asked to show the characteristic equation was given by the one in the picture. I was told that E=0 is not an acceptable solution for Phi. Please, why exactly is E=0 not an acceptable solution for Phi? (LHS=RHS=0) Thanks.

Quantum Mechanics

Problem 2.8 from the text book 'Quantum Mechanics' second edition by David J. Griffiths. See attached file for full problem description.

Find the magnetic moment

An excited atom has a configuration of 1s2 2s2 2p 3d is in the state with the greatest possible total angular momentum. Find the magnetic moment of the atom in ther of Bohr magneton.

Find total angular momentum

If an atom has a state of s= 3/2 and l=2 and zero magnetic momentum what is the total angular momentum

'OPTICS'

This question is from the text book 'OPTICS' fourth edition by Eugene Hecht. Thank you so much for your help

Photons

Modern halogen light bulbs allow their filaments to operate at a higher temperature than the filaments in standard incandescent bulbs. Assume that you have a standard light bulb with a filament operating at 2950 K, and a halogen light bulb with a filament operating at 3400 K. (a) Calculate the ratio of peak frequencies. ( fh ...continues

Photons

Two beams of light with different wavelengths (A > B) are used to produce photoelectrons from a given metal surface. (b) Find Kmax for cesium (W0 = 1.9 eV) if A = 570 nm, and B = 330 nm. Kmax, A ___ eV Kmax, B ___ eV I've tried using the KEmax equation where Kmax = hf - W0, but I got the wrongs answers. I don't know w ...continues

Photons

A green photon (wavelength = 570 nm) is absorbed by a free hydrogen atom, initially at rest. What is the recoil speed of the hydrogen atom after absorbing the photon? ___ m/s I just don't understand quantum mechanics - this problem seems simple, but I just don't understand how to do it.

Photoelectric effect

(See attached file for full problem description) --- In a photoelectric experiment on the metal copper, the following values of the stopping potential... ---

Photoelectric effect

Infrared photons cause a particular piece of metal to emit photoelectrons. Will photoelectrons be emitted when the metal is illuminated by visible light? If not, why? If yes, what properties of the emitted photoelectrons will be different from the case of the infrared illumination?

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