{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

HMWR1 - eV(b a proton with a kinetic energy of 100 eV(c an...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
110A Physical Chemistry: Quantum Mechanics Homework #1: assigned 10/4/10; due 10/11/10 in class 1. Blackbody radiation and Wien displacement law (30 pts) 1.1 Explain what Wien displacement law states and derive Wien displacement law from Planck distribution law of blackbody radiation. Express Planck distribution law in terms of wavelengths. 1.2 In a thermonuclear explosion the fireball can reach temperatures of about 10 7 K. What value of λ max does this correspond to? (Use Wien displacement law). In which region of the spectrum is this wavelength found? 2. Bohr atom (30 pts) 2.1 Compute the de Broglie wavelength of : (a) an electron with a kinetic energy of 100
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: eV; (b) a proton with a kinetic energy of 100 eV; (c) an electron in the first Bohr orbit of a hydrogen atom. 2.2 Describe an experiment to observe so called de Broglie waves. 3. Photoelectric effect (40 pts) 3.1 Explain what a work function of a metal is. 3. 2 The workfunction of chromium is 4.40 eV; compute the kinetic energy of electrons emitted from a chromium surface irradiated with ultra-violet light of wavelength equal to 200 nm. 3.3 Describe a series of measurements that would provide you with a way of determining Planck constant. Which physical quantity does the Planck constant represent?...
View Full Document

{[ snackBarMessage ]}