Chapter 39: Problem 5
Which of the following particles does not have an integer spin? a) photon b) \(\pi\) meson c) \(\omega\) meson d) \(\nu_{\mathrm{e}}\) lepton
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At about what kinetic energy is the length scale probed by an \(\alpha\) particle no longer calculated by the classical formula but rather by the relativistic formula? a) \(0.3 \mathrm{GeV}\) b) \(0.03 \mathrm{GeV}\) c) \(3 \mathrm{GeV}\) d) \(30 \mathrm{GeV}\)
Which of the following is a composite particle? (select all that apply) a) electron b) neutrino c) proton d) muon
A 4.50-MeV alpha particle is incident on a platinum nucleus \((Z=78)\). What is the minimum distance of approach, \(r_{\min } ?\)
A Geiger-Marsden experiment, in which alpha particles are scattered off a thin gold film, yields an intensity of \(I\left(94.9^{\circ}\right)=853\) counts/s at a scattering angle of \(94.9^{\circ} \pm 0.7^{\circ} .\) What is the intensity (in counts/s) at a scattering angle of \(60.5^{\circ} \pm 0.7^{\circ}\) if the scattering obeys the Rutherford formula?
On July \(4,2012,\) the discovery of the Higgs boson at the Large Hadron Collider was announced. During the data-taking run, the LHC reached a peak luminosity of \(4.00 \cdot 10^{33} \mathrm{~cm}^{-2} \mathrm{~s}^{-1}\) (this means that in an area of 1 square centimeter, \(4.00 \cdot 10^{33}\) protons collided every second). Assume that the cross section for the production of the Higgs boson in these proton-proton collisions is \(1.00 \mathrm{pb}\) (picobarn). If the LHC accelerator ran without interruption for \(1.00 \mathrm{yr}\) at this luminosity, how many Higgs bosons would be produced?
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