Author: dexter

  • Problem 2.154 — Magnetic Work and Thermodynamics

    Problem Statement Solve the magnetic field/force problem: Solve the magnetic field/force problem: Write the first law for a paramagnetic solid including magnetic work, and derive the analogue of the ideal gas law. For a magnetic system in an external field $H$, the magnetic moment $M$ (total) does work $dW_{mag} = -\mu_0 H\,dM$ (work done by…

  • Irodov Problem 3.85 — Energy of Polarization in Dielectric

    Problem Statement Solve the work-energy problem: Solve the work-energy problem: Irodov Problem 3.85 (Section 3.1: Constant Electric Field in Vacuum): This problem applies the fundamental laws of electrostatics to a specific charge configuration involving energy of polarization in dielectric. Charge parameters and geometry as specified in Irodov 3. Given Information See problem statement for all…

  • Irodov Problem 3.85 — Energy of Polarization in Dielectric

    Problem Statement Solve the work-energy problem: Solve the work-energy problem: Irodov Problem 3.85 (Section 3.1: Constant Electric Field in Vacuum): This problem applies the fundamental laws of electrostatics to a specific charge configuration involving energy of polarization in dielectric. Charge parameters and geometry as specified in Irodov 3. Given Information See problem statement for all…

  • HC Verma Chapter 7 Problem 33 — Particle moving in circle: find speed from angular velocity

    Problem Statement Solve the rotational mechanics problem: Solve the kinematics problem: A particle moves in a circle of radius 0.8 m at 3 rev/s. Find its speed and centripetal acceleration. $v = \omega r$; $a_c = v^2/r = \omega^2 r$ Step 1: $\omega = 3 \times 2\pi = 6\pi$ rad/s. Step 2: $v = 6\pi…

  • Problem 2.153 — Debye Model: Low-Temperature Heat Capacity

    Problem Statement Solve the thermodynamics problem: Solve the thermodynamics problem: State the Debye $T^3$ law for the heat capacity of a solid at low temperature. The Debye model treats lattice vibrations as a spectrum of acoustic phonons with maximum frequency $\omega_D$ (Debye frequency). At low temperatures ($T \ll \theta_D = \hbar\omega_D/k_B$) Given Information See problem…

  • Irodov Problem 3.84 — Electric Field at Dielectric Boundary

    Problem Statement Determine the electric field for the configuration described: Determine the electric field for the configuration described: Irodov Problem 3.84 (Section 3.1: Constant Electric Field in Vacuum): This problem applies the fundamental laws of electrostatics to a specific charge configuration involving electric field at dielectric boundary. Charge parameters and ge Given Information See problem…

  • Problem 2.152 — Thermal Expansion: Volume vs Pressure

    Problem Statement Solve the fluid mechanics problem: Solve the fluid mechanics problem: A liquid has volumetric expansion coefficient $\alpha_V = 2.1\times10^{-4}\ \text{K}^{-1}$ and isothermal compressibility $\kappa_T = 4.5\times10^{-10}\ \text{Pa}^{-1}$. Find the pressure needed to maintain constant volume when temperature rises by $\Delta T = 10\ Given Information See problem statement for all given quantities. Physical…

  • Irodov Problem 3.84 — Electric Field at Dielectric Boundary

    Problem Statement Determine the electric field for the configuration described: Determine the electric field for the configuration described: Irodov Problem 3.84 (Section 3.1: Constant Electric Field in Vacuum): This problem applies the fundamental laws of electrostatics to a specific charge configuration involving electric field at dielectric boundary. Charge parameters and ge Given Information See problem…

  • HC Verma Chapter 7 Problem 32 — Geostationary orbit radius

    Problem Statement Find the radius of a geostationary orbit. ($M_E = 6\times10^{24}$ kg, $G = 6.67\times10^{-11}$, $T = 24$ h) Given Information See problem statement for all given quantities. Physical Concepts & Formulas This problem applies fundamental physics principles to the scenario described. The solution requires identifying the relevant conservation laws and equations of motion,…

  • Problem 2.151 — Wetting Transition: Spreading Coefficient

    Problem Statement Define the spreading coefficient $S = \sigma_{SG}-\sigma_{SL}-\sigma_{LG}$ and state the conditions for spreading, partial wetting, and non-wetting. Given Information See problem statement for all given quantities. Physical Concepts & Formulas This problem applies fundamental physics principles to the scenario described. The solution requires identifying the relevant conservation laws and equations of motion, then…