Author: dexter

  • Problem 3.378 — Maxwell’s equations

    Problem Statement Irodov Problem 3.378 — 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 6.139 — Stefan-Boltzmann Law Derivation

    Problem Statement Derive the Stefan-Boltzmann law $P = \sigma T^4$ by integrating Planck’s 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 field…

  • Irodov Problem 3.31 — Potential from Continuous Distribution

    Problem Statement Irodov Problem 3.31 (Section 3.1: Constant Electric Field in Vacuum): This problem applies the fundamental laws of electrostatics to a specific charge configuration involving potential from continuous distribution. 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 3.377 — Maxwell’s equations

    Problem Statement Irodov Problem 3.377 — 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 6.131 — Uncertainty: Energy and Time for Metastable State

    Problem Statement Solve the quantum/modern physics problem: Solve the work-energy problem: A metastable state has lifetime $\tau = 1$ ms. Find the energy uncertainty and the minimum linewidth. $$\Delta E = \hbar/\tau = 1.055\times10^{-34}/10^{-3} = 1.055\times10^{-31} \text{ J} = 6.6\times10^{-13} \text{ eV}$$ $$\Delta\nu = \Delta E/h = 1/(2\pi\tau) = 159 \t Given Information Frequency $\nu$…

  • Problem 6.195 — Nuclear Moment of Inertia

    Problem Statement Solve the nuclear physics problem: Solve the nuclear physics problem: A deformed nucleus rotates. If the first excited state of $^{168}$Er ($J^\pi = 2^+$) is at 79.8 keV, find the nuclear moment of inertia. For a rigid rotor, the rotational energy levels are: $$E_J = \frac{\hbar^2}{2\mathcal{I}}J(J+1)$$ The $2^+ \to 0^+$ transition e Given…

  • Problem 3.376 — Maxwell’s equations

    Problem Statement Irodov Problem 3.376 — 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 6.138 — Blackbody Radiation: Wien’s Law

    Problem Statement Derive Wien’s displacement law from Planck’s formula and find the peak wavelength for the Sun ($T = 5778$ K). 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…

  • Irodov Problem 3.30 — Self-Energy of Charged Sphere

    Problem Statement Solve the work-energy problem: Solve the work-energy problem: Irodov Problem 3.30 (Section 3.1: Constant Electric Field in Vacuum): This problem applies the fundamental laws of electrostatics to a specific charge configuration involving self-energy of charged sphere. Charge parameters and geometry as specified in Irodov 3.30 $\va Given Information Mass $m$, velocity $v$, height…

  • Problem 3.375 — Maxwell’s equations

    Problem Statement Irodov Problem 3.375 — 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…