When an electron and positron annihilate, both their masses are destroyed, creating two equal energy photons to preserve momentum.Explain why the two rays travel in exactly opposite directions if the center of mass of theelectron-positron system is initially at rest.

Q: An electron and a positron, each moving at 3.0 x105 m/scollide head on, disappear, and producetwo…

A: The electron and positron are combined together to produce two photons. The combine mass of electron…

Q: An electron initially at rest recoils after a head - on collision with a 6.20 - keV photon.…

A: In a head-on collision with an electron, the photon is scattered back having a scattering angle…

Q: The half-life of the specific radioactive particles is observed to be 1.8×10^-8 s. These radioactive…

A: Given that half life of the specific radioactive particle and speed of radioactive particle. Then We…

Q: A linear particle accelerator using beta particles collides electrons with their anti-matter…

A:

Q: Wave-particle duality of light extends to matter particles by the de Broglie hypothesis. If an…

A: It is given that

Q: true or false: The maximum energy of the ejected electrons is proportional to the intensity of the…

A: Given statement : The maximum energy of the ejected electrons is proportional to the intensity of…

Q: identical

A: Given, The wavelength, λ=1.9pm=1.9×10−12m Planck's constant, h=6.626×10−34Js Speed of light,…

Q: Why don’t we feel the momentum of sunlight when we are on the beach?

A:

Q: 2:-A photon of frequency v is scattering by an electron initially at rest. Verify that the maximum…

A:

Q: f energy 0.7MeV are scattered from electron initially at rest . If the energy of the scattered…

A: We know that the photon energy is given as  E = hcλ where h is the Planck constant = 6.626 x 10-34…

Q: JC-26) The Compton Effect Gamma rays emitted by radioactive decay also exhibit measurable Compton…

A:

Q: A linear particle accelerator using beta particles collides electrons with their anti-matter…

A:

Q: If an observer sits on a photon, will the photon appear to be at rest to an observer?

A:

Q: How can photon have momentum without mass?

A: We know,

Q: Commonly, when looking at the Compton effect, we mainly use x-ray or gamma ray propulsions to…

A:

Q: A positron collides head on with an electron at the SLAC National Accelerator Facility. The positron…

A:

Q: Assume a lightbulb converts all of its energy to green light (this is not true, some is lost as…

A: The expression for the power is as follows: P=Et                                 1 The total energy…

Q: A very slowly moving positron encounters a very slowly moving electron. The particles annihilate…

A:

Q: A photon decays into an electron-positron pair. What is the kinetic energy of the electron if its…

A:

Q: 5. The lifetime of a muon is 2.2 µs traversing the atmosphere at 0.98c (average) (a) What is the…

A:

Q: An electron and a positron anihilate with equal and opposite momenta and become two photons: e- +e-…

A: To explain: (A) Why the electron and photon cannot annihilate to become a single photon.…

Q: Photoelectron from  a material with binding energy of 2.71ev are ejected by 420nm photons. Once…

A:

Q: An electron and a positron, each with a kinetic energy of 2.500 MeV, annihilate, creating two…

A:

Q: 3. (a) Verify that the minimum energy a photon must have to create an electron-positron pair in the…

A: ANS (a) In the zero momentum frame , there are electrons, positrons and nucleus. So, the total…

Q: An electron and a positron undergo pair annihilation . If they had approximately zero kinetic energy…

A:

Q: An electron and a positron collide head on, annihilate, andcreate two 0.85-MeV photons traveling in…

A: Using Einstein’s mass energy relation, the amount of energy E released by annihilation of the mass m…

Q: Extra: A very rare but occasionally observed decay of a muon u (rest energy = 106 MeV) is nto an…

A:

Q: true or false: The maximum energy of the ejected electrons is proportional to the velocity of the…

A: Given a statement, To state whether it's true / false

Q: Heisenberg’s uncertainty principle states that it is impossible to measure simultaneously the exact…

A: Heisenberg’s uncertainty principle states that it is impossible to measure simultaneously the exact…

Q: A new type of force was discovered by physicists with the following expression: a Fnew= + Be* +3x4…

A: The given force equation, Fnew=αx+βex+3x4

Q: The half-life of the specific radioactive particles is observed to be 1.8´10-8 s. These radioactive…

A: The solution is given below

Q: When a positron (a positively charged electron) is annihilated by combination with an electron, two…

A: Calculation of Energy per photon

Q: (3) A gamma-ray photon with an energy of 1 GeV collides with a stationary proton. The photon…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: An electron and a positron are separated by distance r. Find the ratio of the gravitational force to…

A: The gravitational force in this case is The electrical force between the electron-positron pair is

Q: If pair production of muon-antimuon pair can occur for photons of wavelength =5.85 x 10-15 m or…

A: Given : Wavelength of photon, λ = 5.85 ×10-15 m

Q: A photon of frequency v is scattered by an electron initially at rest. Verify that the maximum…

A: Here a photon is scattered by an electron at rest.Herettheffrequency of the photon ν We have to…

Q: In the pair production process, photon energy gets converted to particle/antiparticle pairs. Imagine…

A: Creation of  an electron and a positron (or any pair of particles) from a single photon is…

Speed of light

The speed at which the light travels in a vacuum is unbiased for both the source and inertial frame of reference of the observer. This was postulated by the physicist, Albert Einstein, by observing the theory of electromagnetism of Maxwell. Also, there was no evidence for the luminiferous aether, that is, the medium for the propagation of light where the electromagnetic field exists.