2 Cosmic Ray A cosmic-ray particle has been observed (indirectly) with an estimated energy of 16 J, or about 102⁰ eV.* Suppose this particle was a proton (me² ≈ 10⁹ eV). (a) What was the velocity of the proton relative to the earth? Warning! Most calculators do not carry around enough digits to give an answer other than u = c, but this is not the speed of the particle. Express your result in terms of the fractional difference between the velocity of the particle and the velocity of light: c=2=D=1-8 (b) The Milky Way is about 105 light years across. If a photon and this proton raced across the galaxy, by what distance would the photon win the race, as measured by an observer at rest with respect to the galaxy? (c) How long would it take the proton to cross our galaxy, as measured by a clock carried along with the proton?
2 Cosmic Ray A cosmic-ray particle has been observed (indirectly) with an estimated energy of 16 J, or about 102⁰ eV.* Suppose this particle was a proton (me² ≈ 10⁹ eV). (a) What was the velocity of the proton relative to the earth? Warning! Most calculators do not carry around enough digits to give an answer other than u = c, but this is not the speed of the particle. Express your result in terms of the fractional difference between the velocity of the particle and the velocity of light: c=2=D=1-8 (b) The Milky Way is about 105 light years across. If a photon and this proton raced across the galaxy, by what distance would the photon win the race, as measured by an observer at rest with respect to the galaxy? (c) How long would it take the proton to cross our galaxy, as measured by a clock carried along with the proton?
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter28: Special Relativity
Section: Chapter Questions
Problem 34PE: (a) All but the closest galaxies are receding from our own Milky Way Galaxy. If a galaxy 12.0109ly...
Related questions
Question
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 2 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Recommended textbooks for you
College Physics
Physics
ISBN:
9781938168000
Author:
Paul Peter Urone, Roger Hinrichs
Publisher:
OpenStax College
Modern Physics
Physics
ISBN:
9781111794378
Author:
Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:
Cengage Learning
University Physics Volume 3
Physics
ISBN:
9781938168185
Author:
William Moebs, Jeff Sanny
Publisher:
OpenStax
College Physics
Physics
ISBN:
9781938168000
Author:
Paul Peter Urone, Roger Hinrichs
Publisher:
OpenStax College
Modern Physics
Physics
ISBN:
9781111794378
Author:
Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:
Cengage Learning
University Physics Volume 3
Physics
ISBN:
9781938168185
Author:
William Moebs, Jeff Sanny
Publisher:
OpenStax
Physics for Scientists and Engineers with Modern …
Physics
ISBN:
9781337553292
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:
9781133104261
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning