Advanced Physics Homework Help Forum

Post thread
Free advanced physics homework help via qualified mentors. Upper undergraduate and graduate level. Please use the template when requesting help and show your work.
Independent parameters of the rotation tensor ##R_{ij}##
  • brotherbobby
  • · Replies 2 ·
Replies
2
Asymmetric uncertainty intervals in astrophysical data
  • ElectroFractal
  • · Replies 6 ·
Replies
6
What is the meaning of r' in the Multipole Expansion?
  • Tony Hau
  • · Replies 8 ·
Replies
8
Solve Bound Charge Question: Griffith's Book Example
  • Tony Hau
  • · Replies 4 ·
Replies
4
How to calculate the induced charge in an electric field
  • stanlee
  • · Replies 8 ·
Replies
8
Numerical Evaluation of the Kirchhoff Integral (Flux Pattern) (Units?)
  • PhDeezNutz
  • · Replies 1 ·
Replies
1
Why Is Velocity in Spherical Coordinates Given by This Equation?
  • Another
  • · Replies 2 ·
Replies
2
Why is the Electric Field of a Polarized Atom Different in Textbooks?
  • Tony Hau
  • · Replies 2 ·
Replies
2
Vector potential ##\vec A## in terms of magnetic field ##\vec B##
  • brotherbobby
  • · Replies 26 ·
Replies
26
A simple pendulum is suspended from the ceiling of an accelerating car
  • badluckmath
  • · Replies 6 ·
Replies
6
Normalizing wavefunction obtained from Lorentzian wave packet
  • XProtocol
  • · Replies 3 ·
Replies
3
Divergence Theorem Problem Using Multiple Arbitrary Fields
  • JackofTrades
  • · Replies 1 ·
Replies
1
The potential of a sphere with opposite hemisphere charge densities
  • Tony Hau
  • · Replies 6 ·
Replies
6
How to Derive the Conservation Law for the FRW Metric?
  • Markus Kahn
  • · Replies 1 ·
Replies
1
Can anyone help check where I went wrong (Potential of electrodynamics)?
  • Tony Hau
  • · Replies 16 ·
Replies
16
Covariant derivative and the Stress-enegery tensor
  • Markus Kahn
  • · Replies 4 ·
Replies
4
Simplification of the Proca Lagrangian
  • fabstr1
  • · Replies 5 ·
Replies
5
Equation of motion in curved spacetime
  • Markus Kahn
  • · Replies 1 ·
Replies
1
How to derive this thermodynamic math identity
  • Hiero
  • · Replies 5 ·
Replies
5
Initial condition of Wave functions with Yukawa Potential
  • Riccardo Marinelli
  • · Replies 4 ·
Replies
4
Did I Make a Mistake in Analyzing the Oscillating String?
  • LCSphysicist
  • · Replies 2 ·
Replies
2
Single Particle Expectation of Energy Momentum Tensor
  • Diracobama2181
  • · Replies 1 ·
Replies
1
Solving Newton's 2nd Law for Particle Falling in Medium
  • TRB8985
  • · Replies 4 ·
Replies
4
What is the significance of the grand partition function in an Einstein solid?
  • Ted Ali
  • · Replies 2 ·
Replies
2
Why Does Galileo's Tower of Pisa Experiment Predict an Eastward Drift?
  • JD_PM
  • · Replies 26 ·
Replies
26
Modeling Suction Force: Tips & Solutions
  • Adeel Ahmad
  • · Replies 2 ·
Replies
2
Modeling a spark gap--How to solve a DE with a step function
  • Motocross9
  • · Replies 3 ·
Replies
3
Laws of conservation in special relativity
  • LagrangeEuler
  • · Replies 31 ·
2
Replies
31
Classical Canonical Partition Function in Two Dimensions
  • Diracobama2181
  • · Replies 4 ·
Replies
4
ADM formulation Initial Value Problem data per spacepoint
  • TerryW
  • · Replies 1 ·
Replies
1
Legendre polynomial - recurrence relations
  • Joe20
  • · Replies 1 ·
Replies
1
Need help with calculating a Cv in PHYWE's Heat Capacity of gases
  • TechieDork
  • · Replies 4 ·
Replies
4
Estimation of the number of background events
  • Bolte Dela Paz
  • · Replies 3 ·
Replies
3
How Does Joule Thomson Expansion Affect Gas Temperature?
  • Rahulx084
  • · Replies 1 ·
Replies
1
How do my successive diffraction patterns look?
  • PhDeezNutz
  • · Replies 5 ·
Replies
5
Phase shifts for a localized Coulomb and harmonic potential
  • phywithAK
  • · Replies 1 ·
Replies
1
Small deviations from equilibrium and Lagrange multipliers
  • Ted Ali
  • · Replies 1 ·
Replies
1
Finding the coefficient of viscosity
  • joshm12
  • · Replies 6 ·
Replies
6
Question about using the Lagrangian for a spinning rubber band problem
  • guv
  • · Replies 25 ·
Replies
25
Heat engine that uses a rubber band (Thermodynamics)
  • Pedro Roman
  • · Replies 2 ·
Replies
2
Change of variables in a propagator
  • Jacob Nie
  • · Replies 1 ·
Replies
1
How Does Time-Reversal Invariance Affect Phi 4 Theory Renormalization?
  • Diracobama2181
  • · Replies 1 ·
Replies
1
Integrating ##\sigma=\chi\int{dA/A}## for a sphere
  • MartynaJ
  • · Replies 6 ·
Replies
6
Question about the derivation of Exact Differentials in thermo
  • Jacob Nie
  • · Replies 4 ·
Replies
4
What is the formula for calculating reaction energy in an α decay?
  • Stephen Bulking
  • · Replies 6 ·
Replies
6
What Causes Bubble Oscillation According to Gauss's Law?
  • kenth
  • · Replies 1 ·
Replies
1
Questions about infinitesimal changes in a mechanics problem
  • Leo Liu
  • · Replies 4 ·
Replies
4
Cauchy-Riemann Theorem Example in Physics
  • entropy2008
  • · Replies 1 ·
Replies
1
Question about an Eqn. in Shankar - wave function probability
  • Jacob Nie
  • · Replies 3 ·
Replies
3
Showing properties of a propagator given certain Lorentz identities
  • JD_PM
  • · Replies 11 ·
Replies
11
A poor man's way to Schwarzschild Geometry
  • TerryW
  • · Replies 25 ·
Replies
25
Series expansion of the Lorentz Transformation
  • JD_PM
  • · Replies 22 ·
Replies
22
Griffiths 8.5: Impulse and Momentum parallel plate capacitor
  • KDPhysics
  • · Replies 3 ·
Replies
3
Quantum Optics Question Involving Coherent States
  • JD_PM
  • · Replies 15 ·
Replies
15
Ipho 1987, thermodynamics problem: Moist air ascending over a mountain range
  • Jacob White
  • · Replies 66 ·
3
Replies
66
How to calculate a solid angle in steradians from arcminutes?
  • Kayla Martin
  • · Replies 3 ·
Replies
3
Euler Lagrange equation and a varying Lagrangian
  • Tamin Ayoub
  • · Replies 1 ·
Replies
1
Relativistic energy and momentum conservation
  • denniszhao
  • · Replies 8 ·
Replies
8
On the orthogonality of the rotation matrix
  • brotherbobby
  • · Replies 4 ·
Replies
4
Calculating degeneracy of the energy levels of a 2D harmonic oscillator
  • sukmeov
  • · Replies 12 ·
Replies
12
Magnetic field of a rotating disk with a non-uniform volume charge
  • Light bulB 6626
  • · Replies 1 ·
Replies
1
Minimum time between two orthogonal states
  • Kaguro
  • · Replies 2 ·
Replies
2
How Does Wick's Theorem Apply to Time-Independent Bose Operators?
  • PeroK
  • · Replies 3 ·
Replies
3
Finding the potential function from the wavefunction
  • Kaguro
  • · Replies 10 ·
Replies
10
Calculating Terms in $\bra{P'}\phi^4\ket{P}$
  • Diracobama2181
  • · Replies 1 ·
Replies
1
"Astronomical Calculus" Spaceship Dilation problem
  • Sabertooth
  • · Replies 16 ·
Replies
16
Cylindrical Conductors Carrying a Current I -- Formula (?)
  • requied
  • · Replies 1 ·
Replies
1
Weird condition describing symmetry transformation
  • Markus Kahn
  • · Replies 2 ·
Replies
2
Could an operator act on a bra vector?
  • Haorong Wu
  • · Replies 9 ·
Replies
9
How to calculate an operator in the Heisenberg picture?
  • Haorong Wu
  • · Replies 13 ·
Replies
13
Understanding Vapour Pressure & Temperature Difference
  • Jacob White
  • · Replies 18 ·
Replies
18
Center of mass energy for two relativistic colliding particles
  • squareroot
  • · Replies 2 ·
Replies
2
Thermodynamics Problem: Finding Heat Transfer
  • Jacob White
  • · Replies 1 ·
Replies
1
Equations of motion of a system with non holonomic constraints
  • DannyJ108
  • · Replies 3 ·
Replies
3
Hamiltonian mechanics: phase diagram
  • LuccaP4
  • · Replies 7 ·
Replies
7
Griffiths Problem 3.35. Harmonic Oscillator, Bra-ket notation
  • Irishdoug
  • · Replies 8 ·
Replies
8
What is the Limiting Value of Integral in Newton's Shell Theorem for r=R?
  • parshyaa
  • · Replies 8 ·
Replies
8
Dispersion relation statistical mechanics
  • Luca2018
  • · Replies 2 ·
Replies
2
Please help me to be able to read the Christoffel symbol in EFE
  • diazdaiz
  • · Replies 2 ·
Replies
2
Gravitation: Object moving from infinity
  • TopsyKrate
  • · Replies 5 ·
Replies
5
Clausius' Theorem: Solving the Mystery of T ∑(dQi/Ti) =< 0
  • Pouyan
  • · Replies 5 ·
Replies
5
Ultra Relativistic Free Electrons Gas
  • Victor_Andrade
  • · Replies 1 ·
Replies
1
Lagrange equations: Two blocks and a string
  • Zamarripa
  • · Replies 9 ·
Replies
9
Lagrangian mechanics: central-force-like problem
  • LuccaP4
  • · Replies 5 ·
Replies
5
EM: Separation of variables to find magnetic induction
  • phys194
  • · Replies 8 ·
Replies
8
Why is the degeneracy criterion the same for all stars?
  • Kayla Martin
  • · Replies 1 ·
Replies
1
QED, Electron-Proton Scattering: Rosenbluth cross-section
  • lapantufla
  • · Replies 1 ·
Replies
1
Magnetic field (correction term)
  • anaisabel
  • · Replies 8 ·
Replies
8
How to Derive Eq. (4.26) from Eq. (4.25) in Birger Bergersen's Book?
  • MathematicalPhysicist
  • · Replies 21 ·
Replies
21
Why is the entropy calculated differently in the microcanonical ensemble?
  • LagrangeEuler
  • · Replies 8 ·
Replies
8
Total Energy, Period and frequency of a masspoint
  • felicia
  • · Replies 1 ·
Replies
1
Solving the same question two ways: Parallel transport vs. the Lie derivative
  • Markus Kahn
  • · Replies 1 ·
Replies
1
How Does a Variable Mass Affect a Simple Pendulum?
  • DannyJ108
  • · Replies 9 ·
Replies
9
Heat distribution in a piece of glass receiving protons
  • Bqback
  • · Replies 6 ·
Replies
6
Energy gaps for quasi-free electrons in a 2D lattice
  • Adele
  • · Replies 1 ·
Replies
1
Normal incidence of a plane polarized wave through multiple mediums
  • DannyJ108
  • · Replies 3 ·
Replies
3
Ground State Energy: Explanation & Calculation
  • Tanmoy
  • · Replies 1 ·
Replies
1
Topological insulators and their optical properties
  • bubblewrap
  • · Replies 1 ·
Replies
1
Momentum and energy in Center-of-Momentum frame
  • LagrangeEuler
  • · Replies 6 ·
Replies
6
Finding Characteristic Depth of Strip Foundation
  • Zouatine
  • · Replies 1 ·
Replies
1