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nuclear physics

  • Game Code: 378706
  •  English    13     Public
    to review of some nuclear physics consepts
  •   Study   Slideshow
  • What is the alpha decay?
    when nucleus emits an alpha particle and transforms into a different atomic nucleus
  •  10
  • What is the beta plus decay?
    in which a proton inside a radionuclide nucleus is converted into a neutron while releasing a positron and an electron neutrino
  •  10
  • What is the quark conversion process that lies at the heart of beta-plus decay? you can draw diagram.
    In beta plus decay an up quark changes into down quark with the emission of a positron and a neutrino,
  •  25
  • What is the quark conversion process that lies at the heart of beta-minus decay? you can draw diagram.
    in beta minus decay a down quark changes into a up quark with the emission of an electron and an anti-neutrino.
  •  25
  • What is the process shown in this animation?
    Electron–positron annihilation occurs when ( e− ) and ( e+) collide and creat an energetic photons
  •  15
  • What is the binding energy of an atom? nuclear binding energy formula-?
    The energy required to disassemble an atom into free electrons and a nucleus.
  •  15
  • What is mass defect in simple words? mass defect formula-?
    mass between an atom and the sum of the masses of the protons, neutrons, and electrons of the atom.
  •  10
  • A radioactive source has a half-life of 80 s. How long will it take for 7/8 of the source to decay?
    240 s
  •  20
  • What has the same nuclear charge but different mass number?
    Isotopes
  •  5
  • What has the same mass number but different nuclear charge?
    Isobars are atoms (nuclides) of different chemical elements that have the same number of nucleons.
  •  25
  • what elements are used as nuclear fuel?
    The main nuclear fuels are uranium and plutonium. In a nuclear power station, the energy released is used to produce electricity
  •  20
  • What is the half-life of a sample where the activity drops from 1,200 Bq down to 300 Bq in 10 days?
    Half of 1,200 is 600, half of 600 is 300. So it takes two half-lives to drop from 1,200 Bq to 300 Bq, which is 10 days. So one half-life is five days.
  •  20
  • The illustration shows how a radioactive sample is decaying over time. What is its half-life and decay constant?
    2 days, 4 x 10^-6
  •  25
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