University Physics With Modern Physics, Volume 1 (chs. 1-20), Global Edition
14th Edition
ISBN: 9781292118925
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
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Chapter 44.2, Problem 44.2TYU
To determine
Whether the virtual photon obey the relationship
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An electron and a positron, each with a kinetic energy of 2.500 MeV, annihilate, creating two photons that travel away in opposite directions.What is the frequency of each photon?
In a pair-production reaction, a photon produces a proton-antiproton pair.
Y → p + p
The rest energy of a proton is 938.3 MeV.
(a) What is the lowest possible frequency (in Hz) of the photon that can produce the proton-antiproton pair?
Hz
(b) What is the wavelength (in m) that corresponds to this lowest possible frequency?
Recently scientists have discovered how to contain an anti-hydrogen atom, an element made of an anti-proton and an anti-electron, both of which have the same mass as their real matter counterparts. When anti-matter and matter collide, they annihilate each other and form pure energy. How much energy is given off when anti-hydrogen and hydrogen atom collide?
Question 13 options:
1260 MeV
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720 MeV
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Chapter 44 Solutions
University Physics With Modern Physics, Volume 1 (chs. 1-20), Global Edition
Ch. 44.1 - Each of the following particles can be exchanged...Ch. 44.2 - Prob. 44.2TYUCh. 44.3 - From conservation of energy, a particle of mass m...Ch. 44.4 - Prob. 44.4TYUCh. 44.5 - Prob. 44.5TYUCh. 44.6 - Is it accurate to say that your body is made of...Ch. 44.7 - Prob. 44.7TYUCh. 44 - Prob. 44.1DQCh. 44 - Prob. 44.2DQCh. 44 - When they were first discovered during the 1930s...
Ch. 44 - The gravitational force between two electrons is...Ch. 44 - Prob. 44.5DQCh. 44 - Prob. 44.6DQCh. 44 - Prob. 44.7DQCh. 44 - Prob. 44.8DQCh. 44 - Prob. 44.9DQCh. 44 - Does the universe have a center? Explain.Ch. 44 - Prob. 44.11DQCh. 44 - Prob. 44.12DQCh. 44 - Prob. 44.13DQCh. 44 - Prob. 44.1ECh. 44 - Prob. 44.2ECh. 44 - Prob. 44.3ECh. 44 - Prob. 44.4ECh. 44 - Prob. 44.5ECh. 44 - Prob. 44.6ECh. 44 - Prob. 44.7ECh. 44 - An electron with a total energy of 30.0 GeV...Ch. 44 - Deuterons in a cyclotron travel in a circle with...Ch. 44 - The magnetic field in a cyclotron that accelerates...Ch. 44 - Prob. 44.11ECh. 44 - Prob. 44.12ECh. 44 - Prob. 44.13ECh. 44 - Prob. 44.14ECh. 44 - Prob. 44.15ECh. 44 - Prob. 44.16ECh. 44 - Prob. 44.17ECh. 44 - Prob. 44.18ECh. 44 - What is the mass (in kg) of the Z0? What is the...Ch. 44 - Prob. 44.20ECh. 44 - Prob. 44.21ECh. 44 - Prob. 44.22ECh. 44 - Prob. 44.23ECh. 44 - Prob. 44.24ECh. 44 - Prob. 44.25ECh. 44 - Prob. 44.26ECh. 44 - Prob. 44.27ECh. 44 - Prob. 44.28ECh. 44 - Prob. 44.29ECh. 44 - Prob. 44.30ECh. 44 - Prob. 44.31ECh. 44 - Prob. 44.32ECh. 44 - Prob. 44.33ECh. 44 - Prob. 44.34ECh. 44 - Prob. 44.35ECh. 44 - Prob. 44.36ECh. 44 - Prob. 44.37ECh. 44 - Prob. 44.38ECh. 44 - Prob. 44.39PCh. 44 - Prob. 44.40PCh. 44 - Prob. 44.41PCh. 44 - Prob. 44.42PCh. 44 - Prob. 44.43PCh. 44 - Prob. 44.44PCh. 44 - Prob. 44.45PCh. 44 - Prob. 44.46PCh. 44 - Prob. 44.47PCh. 44 - Prob. 44.48PCh. 44 - Prob. 44.49PCh. 44 - Prob. 44.50PCh. 44 - Prob. 44.51PCh. 44 - The K0 meson has rest energy 497.7 MeV. A K0 meson...Ch. 44 - DATA While tuning up a medical cyclotron for use...Ch. 44 - Prob. 44.54PCh. 44 - Prob. 44.55PCh. 44 - Consider a collision in which a stationary...Ch. 44 - Prob. 44.57PPCh. 44 - Prob. 44.58PPCh. 44 - Prob. 44.59PP
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- An electron and a positron, with a mass of 9.1 x 10-31 kilograms, annihilate each other, producing two photons. What is the approximate energy of each emerging photon? It is 0.51 Mev 2.0 MeV 4.0 MeV 1.02 MeV It cannot be determined unless the frequency of the photon is known.arrow_forwardAn antiproton has the same mass and rest energy (938.3 MeV) as a proton, but has a negative change -e instead of the positive charge +e of the proton. A proton and an antiproton, initially far apart, move toward each other with the same speed and collide head-on, annihilating each other and producing two photons. Find the energies and wavelengths of the photons if the initial kinetic energies of the proton and antiproton are (a) both negligible and (b) both 545 MeV.arrow_forwardA 10.0 MeV photon is absorbed by a particle of mass 20.0 MeV. The reaction isγ+x→x.(a.) What is the mass (rest energy) of the particle after the collision in MeV? (b.) Show numerically that the gain in rest energy is equal to the photon’s energy minus the particle’s kinetic energy after the collision.arrow_forward
- An electron and a positron anihilate with equal and opposite momenta and become two photons: e- +e- → 2 photons. Both the electron and the positron have mass me and momentum of magnitude mec. Explain why the electron and positron cannot annihilate to become a single (a) photon. (b) What are the magnitudes of the momenta of the photons?arrow_forwardAn electron-positron pair approach each other with identical speeds. The particle-pair collide and annihilate, producing two photons with identical wavelengths of 1.9 picometres. Note: 1 picometre = 1 × 10^−12 m.(i) Calculate the energy of each of the photons produced. (i) Calculate the speed of the electrons before the collisionarrow_forwardAn electron traveling with a speed of 2.5 x 10^6 meters per second collides with a photon having a frequency of 1 x 10^16 hertz. After the collision, the photon has 3.18 x 10^-18 joule of energy. Determine the energy in joules of the photon before the collision.arrow_forward
- The Compton wavelength, λc, of a particle of mass m is defined as follows: λc = h/mc. (a) Calculate the Compton wavelength of a proton. (b) Calculate the energy of a photon that has the same wavelength as found in part (a). (c) Show, in general, that a photon with a wavelength equal to the Compton wavelength of a particle has an energy that is equal to the rest energy of the particle.arrow_forwardAn electron and an antielectron (each has mass 9.11 x 10-31 kg), each traveling at 0.6c relative to the lab frame, collide head on and annihilate, resulting in the creation of two identical photons which travel away in opposite directions. What is the frequency of each photon?arrow_forwardA positron with a kinetic energy of 2.000MeV collides with an electron at rest and the two particles are annihilated. Two photons are produced; one moves in the same direction as the incoming positron and the other moves in the opposite direction. Find the energies of the photons.arrow_forward
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