Particle in 3D Potential Well with Increasing Coupling Term
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Questions and Answers

A particle with mass m moves in a 3D potential well described by the Hamiltonian: H = p²/2m + ½ k(x² + y² + z²) + λxyz. With increasing λ, what happens to the energy levels of the particle?

  • They all increase equally.
  • They decrease equally.
  • They split due to perturbation theory. (correct)
  • Requires numerical calculations for specific values.
  • In a nuclear fusion reaction, two deuterium nuclei (²H) collide to form a helium-3 nucleus (³He) and a neutron. Which conservation law limits the possible outcomes of this reaction?

  • Momentum
  • Energy (correct)
  • Charge
  • All of the above
  • An unknown compound exhibits an absorption peak in its UV-Vis spectrum at 280 nm and a strong peak in its ¹H NMR spectrum at 9.7 ppm. Which functional group is most likely present?

  • Alcohol
  • Aldehyde
  • Aromatic ring (correct)
  • Amine
  • CRISPR-Cas9 technology can be used to modify the genome of an organism with high precision. What is the primary role of the Cas9 protein in this process?

    <p>DNA recognition and cleavage</p> Signup and view all the answers

    El Niño events are associated with warmer than average sea surface temperatures in the equatorial Pacific Ocean. What is the primary mechanism that triggers these events?

    <p>Strengthening trade winds</p> Signup and view all the answers

    A newly discovered organism undergoes mitosis and cytokinesis, resulting in eight genetically identical daughter cells. Which type of cell division is this?

    <p>Mitosis only</p> Signup and view all the answers

    The rate constant (k) for a first-order reaction doubles when the temperature increases from 25°C to 35°C. Assuming the Arrhenius equation holds, what is the activation energy (Ea) for this reaction?

    <p>Requires additional information</p> Signup and view all the answers

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