Chapter 39: Problem 7
Which of the following experiments proved the existence of the nucleus? a) the photoelectric effect b) the Millikan oil-drop experiment c) the Rutherford scattering experiment d) the Stern-Gerlach experiment
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
Figure 39.34 shows a Feynman diagram for the fundamental process involved in the decay of a free neutron: One of the neutron's down quarks converts to an up quark, emitting a virtual \(W^{-}\) boson, which decays into an electron and an anti-electron-neutrino (the only decay energetically possible). Sketch the basic Feynman diagram for the fundamental process involved in each of the following decays: a) \(\mu^{-} \rightarrow e^{-}+\nu_{\mu}+\bar{\nu}_{e}\) b) \(\tau^{-} \rightarrow \pi^{-}+\nu_{\tau}\) c) \(\Delta^{++} \rightarrow p+\pi^{+}\) d) \(K^{+} \rightarrow \mu^{+}+\nu_{\mu}\) e) \(\Lambda^{0} \rightarrow p+\pi\)
Which of the following is a composite particle? (select all that apply) a) electron b) neutrino c) proton d) muon
A Geiger-Marsden experiment, in which alpha particles are scattered off a thin gold film, is set up with two detectors at \(\theta_{1}=85.1^{\circ} \pm 0.9^{\circ}\) and \(\theta_{2}=62.9^{\circ} \pm 0.9^{\circ} .\) Assuming that the scattering obeys the Rutherford formula, what is the ratio of the measured intensities, \(I_{1} / I_{2} ?\)
A neutrino beam with \(E=143 \mathrm{GeV}\) is passed through a slab of aluminum- 27 (with 27 nucleons in each nucleus). The probability that a neutrino in the beam will scatter off a nucleon in the aluminum slab is \(4.19 \cdot 10^{-12}\) The scattering cross section is given by \(\sigma(E)=\left(0.68 \cdot 10^{-38} \mathrm{~cm}^{2} \mathrm{GeV}^{-1}\right) E,\) and aluminum has a density of \(2.77 \mathrm{~g} / \mathrm{cm}^{3} .\) How thick is the slab?
Three hundred thousand years after the Big Bang, the average temperature of the universe was about \(3000 \mathrm{~K}\). a) At what wavelength would the blackbody spectrum peak for this temperature? b) In what portion of the electromagnetic spectrum is this wavelength found?
What do you think about this solution?
We value your feedback to improve our textbook solutions.
