Two photons, each with an energy of 3 MeV, collide head-on and annihilate to produce an electron-positron pair. The electron is emitted at an angle a. What are the kinetic energies and speeds of the electron and the positron? At what angle is the positron emitted? Why?

Two photons, each with an energy of 3 MeV, collide head-on and annihilate to produce an electron-positron pair. The electron is emitted at an angle a. What are the kinetic energies and speeds of the electron and the positron? At what angle is the positron emitted? Why?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

Student claims that a material particle must always move at a slower speed than light, and a massless particle must always move at the same speed as light. Is what she claims true? If this is the case, how can massless particles like photons and neutrinos get their speed? Isn't it possible to speed from a standstill? Explain.
The radio galaxy Cygnus A possesses a lobe of plasma that is detected by both radio and X-ray observatories. The temperature of the X-ray-emitting plasma is 4 keV and the number density of the particles in the plasma is 4x103 m-3. Assume that the plasma is composed solely of completely ionized hydrogen, so the number densities of protons and electrons per cubic meter are identical. * the given number density of particles corresponds to the number density of hydrogen nuclei, so you can safely assume that the number density of electrons is equivalent to this number density a) Compute the collision frequency in Hertz between electrons and ions in the plasma. b) Compute the Debye wavelength in meters of the plasma. c) Compute the plasma parameter of the plasma.
Q4. A neutron at rest decays into a proton with a decay energy of 0.782 Me. What will be the maximum kinetic energy of the residual proton?
Find the magnitude and direction of the Lorentz force on an individual charged particle as it moves through a magnetic field. The direction of the velocity is given by the single, blue arrow pointing away from the charge. The direction of the magnetic field is given by the multiple, black arrows.
If you have a positive look (pi+, mass: mpi = 2.50 x 10-28 kg) at rest and it decays to a positive muon (u+, mass: mu = 1.88 x 10-28 kg) and a neutrino. 1. How much gas is released during the decay process in MeV? If the rest mass of a neutrino is assumed to be negligible. 2. Why is the neutrino required for this decay to occur?
Consider a US Air Force launch of its latest GPS satellite from Cape Canaveral. Radar tracking shows the following J2000 state vector (X,Y,Z and Vx,Vy,Vz) at burnout. 26 Feb 2022 17:10:00.000 (X,Y,Z): 5210.345121 -549.481941 4300.883291 (Vx,Vy,Vz): -1.451280 7.391098 2.690198 Calculate the minimum total delta V required to maneuver this spacecraft into a circular orbit with a 12-hour period and an inclination of 61 degrees, assuming impulsive maneuvers and two-body dynamics. Please solve using equations from Howard Curtis's Orbital Mechanics for Engineering Students, 4th Edition. Or if not possible name the equations you use. Also please use matlab syntax for solving or write the equations out clearly. Thanks!
I'm still confused about the step 2 part. How would I put this into my calculator? Where do the extra numbers 232.6 come from?
Question 5 a). If V=20/x? +y² , find E and D b). State Lorentz force equation c). Find the gradient of the following scaler fields i. V = e?sin2xcoshy ii. U = p?zcos2Ø iii. W =10rsin?ecosø
11. Bob is traveling in a space ship and observes emission from a cloud of atomic hydrogen gas a few light years away. He identifies the Balmer-beta emission line (from the n = 4 to n = 2 transition) and measures its wavelength to be 322 nm. How fast is Bob moving relative to the cloud of hydrogen? Is he getting closer or further away from the hydrogen cloud? (You may assume that Bob is moving directly toward or away from the hydrogen gas cloud. Recall that the ground state energy of hydrogen is -13.6 eV.)