Exam 12: Special Relativity and Elementary Particles

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The strong force depends upon the electric charge of the particles involved.

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If you do an experiment on Earth,and then do an identical experiment in a jet plane moving uniformly at a high speed,you get identical results from both experiments.This is an example of __________.

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The quark structure of the neutron is __________.

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A light year is defined as the distance light can travel at 3 × 108 m/s in one year (365 days).How far is one light year in kilometers? Enter your answer accurate to two decimal places in scientific notation.

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According to special relativity,at speeds approaching the speed of light,the kinetic energy of a moving object is not equal to 1/2 mv2.

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Because of the equivalence of energy and mass,a gamma ray,which is a high energy photon,can "disappear," and in its place there will be produced an electron and a positron,which both have mass.

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What is meant by neutrino oscillations?

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A spin 1/2 particle that does not interact via the strong interaction is a(n)

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​Match each item with the correct statement below.​ -models for combining the electromagnetic,weak and strong nuclear interactions into a single basic force

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If the average lifetime of a proton was 1033 years,about how many protons would you have to assemble together and observe simultaneously in order to witness a total of 100 proton decays in one year?

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What is the symbol for a photon?

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The spins of all known particles are either integral or half-integral multiples of

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An electron and a positron,which are two massive particles,can annihilate when they come together to produce two photons,which have no mass.According to special relativity,this pair annihilation is an example of __________.

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If a 1-kg mass is completely converted into energy,the amount of energy released would be

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What's the quark structure of an antiproton?

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The color force is carried by gluons but gluons do not have color charge themselves.

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Mesons are composed of

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Which of the following is considered anitmatter?

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​Match each item with the correct statement below.​ -spin 1/2 particles that do not interact via the strong force

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​Match each item with the correct statement below.​ -strongly interacting spin 1/2 or 3/2 particles

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