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At very high temperatures (as in the very early universe),

An Introduction to Thermal Physics | 1st Edition | ISBN: 9780201380279 | Authors: Daniel V. Schroeder ISBN: 9780201380279 40

Solution for problem 13P Chapter 6

An Introduction to Thermal Physics | 1st Edition

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An Introduction to Thermal Physics | 1st Edition | ISBN: 9780201380279 | Authors: Daniel V. Schroeder

An Introduction to Thermal Physics | 1st Edition

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Problem 13P

Problem 13P

At very high temperatures (as in the very early universe), the proton and the neutron can be thought of as two different states of the same particle, called the “nucleon.” (The reactions that convert a proton to a neutron or vice versa require the absorption of an electron or a positron or a neutrino, but all of these particles tend to be very abundant at sufficiently high temperatures.) Since the neutron’s mass is higher than the proton’s by 2.3 × 10−30 kg, its energy is higher by this amount times c2 . Suppose, then , that at some very early time, the nucleons were in thermal equilibrium with the rest of the universe at 10ll K. What fraction of the nucleons at that time were protons, and what fraction were neutrons?

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Textbook: An Introduction to Thermal Physics
Edition: 1
Author: Daniel V. Schroeder
ISBN: 9780201380279

The answer to “At very high temperatures (as in the very early universe), the proton and the neutron can be thought of as two different states of the same particle, called the “nucleon.” (The reactions that convert a proton to a neutron or vice versa require the absorption of an electron or a positron or a neutrino, but all of these particles tend to be very abundant at sufficiently high temperatures.) Since the neutron’s mass is higher than the proton’s by 2.3 × 10?30 kg, its energy is higher by this amount times c2 . Suppose, then , that at some very early time, the nucleons were in thermal equilibrium with the rest of the universe at 10ll K. What fraction of the nucleons at that time were protons, and what fraction were neutrons?” is broken down into a number of easy to follow steps, and 131 words. This full solution covers the following key subjects: Very, neutron, were, proton, Early. This expansive textbook survival guide covers 10 chapters, and 454 solutions. The full step-by-step solution to problem: 13P from chapter: 6 was answered by , our top Physics solution expert on 07/05/17, 04:29AM. Since the solution to 13P from 6 chapter was answered, more than 348 students have viewed the full step-by-step answer. This textbook survival guide was created for the textbook: An Introduction to Thermal Physics , edition: 1. An Introduction to Thermal Physics was written by and is associated to the ISBN: 9780201380279.

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At very high temperatures (as in the very early universe),