Exam 12: Special Relativity and Elementary Particles

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Because of time dilation,if a twin goes on a trip in a high-speed rocket ship,when she returns home she will be younger than her twin sister who did not go on the trip.

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Two observers,A and B,move relative to each other.A claims B's clocks run slow.In this case,B will claim A's clocks

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The electron

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If a 1-kg mass is completely converted into energy,the amount of energy released would be 9 × 1016 J.

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The ______________ interaction alone can change one type of quark into another.

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Use the conservation laws to identify the missing particle in each of the following reactions. (a)Κ + p -> Σ+ + __________. (b)Κ+ -> νμ + _________. (c)p + p -> p + π+ + ___________.

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Why do strange particles have long lifetimes compared to other strongly interacting particles?

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The quark structure of the proton is uud.

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A lepton interacts via the strong interaction.

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A quantum number for a quark is

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Particles possessing half-integral spins are called _________ and particles with integral spins are called ________.

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Which of the following is not a fundamental force of nature?

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According to the Weinberg-Salam model,the massless carriers of the electroweak interaction acquire mass in the process of ______________.

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Gluons

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Quarks come in what flavors?

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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 rest energy of a particular subatomic particle is 1200 MeV.If this particle is traveling at 90% the speed of light,what is its total relativistic energy?

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A model for combining the electromagnetic,weak and strong nuclear interactions into a single basic force is a(n)

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​Match each item with the correct statement below.​ -prediction of special relativity that moving clocks run slow

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Because of their short lifetimes,very few muons that are produced in the upper atmosphere at high speeds should be observed at the surface of the Earth.Yet we detect large numbers of muons at ground level because of the special relativistic effect of __________.

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