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Particle Physics

QuestionAnswer
What three things are conserved in nuclear reactions? Mass-energy, momentum, and electric charge.
Why is the neutrino hard to detect? It only interacts very weakly with matter
Who first split a nucleus by artificially accelerated particles? John Cockroft and Ernest Walton
What did Cockroft and Waltons experiment verify E=mc^2
Define pair production The creation of a particle and its antiparticle from energy with momentum and electric charge being conserved
Define pair annihilation When a particle and its antiparticle are almost at rest near each other they join together to create two photons of equal energy travelling in opposite directions.
Name the four forces in increasing order of strength Gravity, weak nuclear force, electromagnetic, strong nuclear force
What is the range of strong nuclear force 10^-15 meters
What is the range of weak nuclear force 10^-18 meters
What is the range of electromagnetic force infinite
What is the range of gravity Infinite
What particles feel strong nuclear force Hadrons
Name two groups of elementary particles Leptons & Quarks
Name two members of the Hadron family Baryons & Mesons
Name the six flavours of Quarks Up, down, charmed, strange, top, bottom
What are mesons made from A quark and anti quark
What are Baryons made of Any three quarks or anti quarks
What is the composition of a proton UUD
Created by: JackEatonK98
 

 



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