Author: dexter

  • Problem 6.130 — Hydrogen: Fine Structure Constant Significance

    Problem Statement Explain the physical significance of the fine structure constant $\alpha = e^2/(4\pi\varepsilon_0\hbar c) \approx 1/137$. Given Information All quantities, constants, and constraints stated in the problem above Physical constants used as needed (see Concepts section) Physical Concepts & Formulas This problem draws on fundamental physical principles. The key is to identify which conservation…

  • Problem 3.374 — Maxwell’s equations

    Problem Statement Irodov Problem 3.374 — Maxwell’s equations. Given Information All quantities, constants, and constraints stated in the problem above Physical constants used as needed (see Concepts section) Physical Concepts & Formulas This problem draws on fundamental physical principles. The key is to identify which conservation law or field equation governs the system, then apply…

  • Problem 6.194 — Geiger-Nuttall Law

    Problem Statement The Geiger-Nuttall law states $\log_{10}T_{1/2} = a + b/\sqrt{E_\alpha}$ for alpha decay. Using two data points for uranium isotopes, find $a$ and $b$: $^{234}U$: $T_{1/2} = 2.46\times10^5$ yr, $E_\alpha = 4.858$ MeV; $^{238}U$: $T_{1/2} = 4.47\times10^9$ yr, $E_\alpha = 4.270$ MeV. Given Information All quantities, constants, and constraints stated in the problem above…

  • Irodov Problem 3.29 — Energy Density in Electric Field

    Problem Statement Determine the electric field for the configuration described: Determine the electric field for the configuration described: Irodov Problem 3.29 (Section 3.1: Constant Electric Field in Vacuum): This problem applies the fundamental laws of electrostatics to a specific charge configuration involving energy density in electric field. Charge parameters and geometr Given Information Geometry and…

  • Problem 6.137 — Bose-Einstein Distribution

    Problem Statement Write the Bose-Einstein distribution for photons and derive the Planck black-body radiation formula. Given Information All quantities, constants, and constraints stated in the problem above Physical constants used as needed (see Concepts section) Physical Concepts & Formulas This problem draws on fundamental physical principles. The key is to identify which conservation law or…

  • Problem 3.373 — Maxwell’s equations

    Problem Statement Irodov Problem 3.373 — Maxwell’s equations. Given Information All quantities, constants, and constraints stated in the problem above Physical constants used as needed (see Concepts section) Physical Concepts & Formulas This problem draws on fundamental physical principles. The key is to identify which conservation law or field equation governs the system, then apply…

  • Problem 3.372 — Maxwell’s equations

    Problem Statement Irodov Problem 3.372 — Maxwell’s equations. Given Information All quantities, constants, and constraints stated in the problem above Physical constants used as needed (see Concepts section) Physical Concepts & Formulas This problem draws on fundamental physical principles. The key is to identify which conservation law or field equation governs the system, then apply…

  • Problem 6.193 — Proton-Antiproton Annihilation

    Problem Statement A proton annihilates with an antiproton at rest. What are the possible products and their energies? Given Information All quantities, constants, and constraints stated in the problem above Physical constants used as needed (see Concepts section) Physical Concepts & Formulas This problem draws on fundamental physical principles. The key is to identify which…

  • Problem 6.129 — Zeeman Effect: Anomalous

    Problem Statement Explain the anomalous Zeeman effect. For the sodium D lines, how many components appear? Given Information All quantities, constants, and constraints stated in the problem above Physical constants used as needed (see Concepts section) Physical Concepts & Formulas This problem draws on fundamental physical principles. The key is to identify which conservation law…

  • Irodov Problem 3.28 — Work Against Coulomb Force: Sphere

    Problem Statement Solve the work-energy problem: Solve the work-energy problem: Irodov Problem 3.28 (Section 3.1: Constant Electric Field in Vacuum): This problem applies the fundamental laws of electrostatics to a specific charge configuration involving work against coulomb force: sphere. Charge parameters and geometry as specified in Irodov 3.28 Given Information Mass $m$, velocity $v$, height…