Physics for Scientists and Engineers with Modern Physics
Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN: 9781337553292
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 44, Problem 29P
To determine

The intensity of cosmic background radiation.

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A) What is the approximate wavelength emitted from helium represented by the bright yellow emission line below?  What is it's frequency in HZ and energy in eV? (1 eV= 1.6 x 10-19 joules).  B) If the excited helium electron that emits a yellow photon in this line starts with a potential energy of 8 eV, what is the potential energy of the electron afterwards? Assume that the emission of a yellow photon is allowed by the laws of quantum mechanics. Also don't worry about the other electron.
1. (a) Briefly explain the Compton effect. (b) It has been suggested that high energy photons might be found in cosmic radiation, as a result of the inverse Compton effect. If the proton has a momentum of 1010 eV/c, find the maximum final energy of the yellow photon initially emitted by a sodium atom (2 = 2.1 nm).
Calculate the de Broglie wavelength of a 5.5-MeV a particle emitted from an 241Am nucleus. Could this particle exist inside the 241Am nucleus (diameter ≈ 1.6 x 10-14 m)? Explain.
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