Physics for Scientists and Engineers with Modern Physics
4th Edition
ISBN: 9780131495081
Author: Douglas C. Giancoli
Publisher: Addison-Wesley
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Question
Chapter 43, Problem 39P
(a)
To determine
The quark combination that produce a
(b)
To determine
The quark combination that produce a
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Students have asked these similar questions
(b) A K+ meson composed of a up-quark and a strange-antiquark has the
following major decay modes:
i. K+ → µtvµ
ii. K+ + 7°e+e
iii. K+ + n+0
iv. K+ → n+°7°
Draw a Feynman diagram for cach of these decays and indicate whether these
procced via the clectromagnetic, strong or weak interaction, or a combination
thereof?
(i)
Discuss the quark model and explain how mesons and baryons are formed using quarks?
(ii)
Classify the verify types of elementary particles in reference to their lepton number, baryon
number and isospin.
(III) What magnetic field B is needed to keep 998-GeV
protons revolving in a circle of radius 1.0 km? Use the
relativistic mass. The proton's “rest mass" is 0.938 GeV/c².
(1 GeV = 10° eV.) [Hint: In relativity, m,elv²/r = qvB_is
still valid in a magnetic field, where mrel =
Ym.]
Chapter 43 Solutions
Physics for Scientists and Engineers with Modern Physics
Ch. 43.1 - Prob. 1AECh. 43.2 - Prob. 1CECh. 43.9 - Prob. 1DECh. 43.9 - Prob. 1EECh. 43 - Prob. 1QCh. 43 - If a proton is moving at very high speed, so that...Ch. 43 - Prob. 3QCh. 43 - Prob. 4QCh. 43 - Prob. 5QCh. 43 - Prob. 6Q
Ch. 43 - Prob. 7QCh. 43 - Prob. 8QCh. 43 - Prob. 9QCh. 43 - Prob. 10QCh. 43 - Prob. 11QCh. 43 - Prob. 12QCh. 43 - Prob. 13QCh. 43 - Prob. 14QCh. 43 - Prob. 15QCh. 43 - Prob. 16QCh. 43 - Prob. 17QCh. 43 - Prob. 18QCh. 43 - Prob. 19QCh. 43 - Prob. 20QCh. 43 - Prob. 1PCh. 43 - Prob. 2PCh. 43 - Prob. 3PCh. 43 - Prob. 4PCh. 43 - Prob. 5PCh. 43 - Prob. 6PCh. 43 - Prob. 7PCh. 43 - Prob. 8PCh. 43 - Prob. 9PCh. 43 - Prob. 10PCh. 43 - Prob. 11PCh. 43 - Prob. 12PCh. 43 - Prob. 13PCh. 43 - Prob. 14PCh. 43 - Prob. 15PCh. 43 - Prob. 16PCh. 43 - Prob. 17PCh. 43 - Prob. 18PCh. 43 - Prob. 19PCh. 43 - Prob. 20PCh. 43 - Prob. 21PCh. 43 - Prob. 22PCh. 43 - Prob. 23PCh. 43 - Prob. 24PCh. 43 - Prob. 25PCh. 43 - Prob. 26PCh. 43 - Prob. 27PCh. 43 - Prob. 28PCh. 43 - Prob. 29PCh. 43 - Prob. 30PCh. 43 - Prob. 31PCh. 43 - Prob. 32PCh. 43 - Prob. 33PCh. 43 - Prob. 34PCh. 43 - Prob. 35PCh. 43 - Prob. 36PCh. 43 - Prob. 37PCh. 43 - Prob. 38PCh. 43 - Prob. 39PCh. 43 - Prob. 40PCh. 43 - Prob. 41PCh. 43 - Prob. 42PCh. 43 - Prob. 43PCh. 43 - Prob. 44PCh. 43 - Prob. 45PCh. 43 - Prob. 46GPCh. 43 - Prob. 47GPCh. 43 - Prob. 48GPCh. 43 - Prob. 49GPCh. 43 - Prob. 50GPCh. 43 - Prob. 51GPCh. 43 - Prob. 52GPCh. 43 - Prob. 53GPCh. 43 - Prob. 54GPCh. 43 - Prob. 55GPCh. 43 - Prob. 56GPCh. 43 - Prob. 57GPCh. 43 - Prob. 58GPCh. 43 - Prob. 59GPCh. 43 - Prob. 60GPCh. 43 - Prob. 61GPCh. 43 - Prob. 62GPCh. 43 - Prob. 63GPCh. 43 - Prob. 64GPCh. 43 - What fraction of the speed of light c is the speed...Ch. 43 - Prob. 66GPCh. 43 - Prob. 67GP
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- (a) Is the decay possible considering the appropriate conservation laws? State why or why not. (b) Write the decay in terms of the quark constituents of the particles.arrow_forward5) For this decay, what are the kinetic energies of the proton and pion in a reference frame where the A° was at rest before the decay? (Note that this is via the weak interaction, so strangeness is not conserved). A°→p* + narrow_forward(c) Pions are also produced in the upper atmosphere. [In fact, the sequence is proton (from outer space) hits proton (in atmosphere) -> p +p+pions. + The pions then decay into muons: ñ→µ¯¯ +vµ; π†→µ* +vµ.] But the lifetime of the pion is much shorter, a hundredth that of the muon. Should the pions reach ground level? (Assume that the pions also have a speed of 0.998 c.)arrow_forward
- The average particle energy needed to observe unification of forces is estimated to be 1019 GeV . (a) What is the rest mass in kilograms of a particle that has a rest massof 1019 GeV/c2 ? (b) How many times the mass of a hydrogen atom is this?arrow_forwardA pion of positive electric charge (n*) and mass m, = 139,6 MeV/c², resting in the laboratory, decays in a muon with the same electric charge (u*) and a neutrin of muon (vu), The mass of the muon is equal to m, = 105, 7 MeV /c² and that of the neutrin is practically null. a) Determine the muon speed according an observer in the laboratory. b) What conservation laws should be considered in the present problem? Why?arrow_forwardExplain the unusually short lifetime of the ∑0 relative to the other hyperons (baryons with nonzero strangeness numbers) shown in Tablearrow_forward
- both questions pleasearrow_forwardThe conservation of energy Hv=2ymc*c.A O H=2KT.BO H=EKT.CO None of these.DOarrow_forwardOne possible decay mode of the neutral kaon is K0→π0+π0. The rest energiesof the K0andπ0are 498 MeV and 135 MeV, respectively. If the kaon is initially atrest when it decays, (a) How much energy is released in the decay? (b) What are themomentum and relative directions of the two neutral pions (π0)?arrow_forward
- 0 3. The ºlifetime has been determined by studying the decy.om rest of the K+ meson in the mode K+ →° ++. The average distance travelled by the Tºin a block of photographic emulsion before it decays in the easily observable mode nº→ е+ + e +y is measured, and from the calculated velocity of flight of the its lifetime is obtained. Given that its lifetime is 0.8x10-¹6 sec, predict the average distance travelled by a zºbefore it decays. (Hint: you may assume that the pions have an average mass of 137 MeV;arrow_forwardA pion (139.6 MeV) at rest decays into a muon (105.7 MeV) and neutrino; If the muon travels in a region with a uniform external magnetic field B-9,67, calculate the radius of the trajectory in cm c-3x10 m/s assume that the magnetic field vector is perpendicular to the plane of motion of the muonarrow_forwardIf inside a cyclotron accelerating protons achieve maximum energy of 1 MeV with applied external magnetic field of 1T. Then answer the following questions: (i) Calculate the radius of the orbit of protons with energy of 1MEV. (ii) Calculate the frequency of cyclotron.arrow_forward
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