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Free advanced physics homework help via qualified mentors. Upper undergraduate and graduate level. Please use the template when requesting help and show your work.
Invariance of Energy Momentum Relativistic
  • agnimusayoti
  • · Replies 16 ·
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16
Where Did I Go Wrong in Degenerate Perturbation Theory?
  • mathsisu97
  • · Replies 3 ·
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3
Which threshold value provides the most accurate results for muon decay time?
  • tryingtolearn1
  • · Replies 16 ·
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16
Loop Feynman diagram contributions to correlation functions
  • JD_PM
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3
Is the Work Function of Graphene Equal to the Binding Energy?
  • schniefen
  • · Replies 1 ·
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1
Help with a few annoying exterior derivatives
  • etotheipi
  • · Replies 12 ·
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12
Showing Feynman-amplitudes' gauge invariance (for Compton Scattering)
  • JD_PM
  • · Replies 58 ·
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The propagator of eigenstates of the Total Angular Momentum
  • mathsisu97
  • · Replies 9 ·
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9
Can't understand ket notation for spin 1/2
  • pepediaz
  • · Replies 4 ·
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4
What Defines a Solenoidal Vector Field?
  • tweedle2
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1
Show that the energy is conserved in this field/metric
  • LCSphysicist
  • · Replies 3 ·
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3
Solve Spherical Harmonics: Y_{1,1} Eigenfunction of L^2 & L_z
  • docnet
  • · Replies 2 ·
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2
Rotation and Polarisation of Light using Jones Matrices
  • Mr_Allod
  • · Replies 1 ·
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1
Energy-momentum tensor for a relativistic system of particles
  • Frostman
  • · Replies 1 ·
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1
Temperature difference by Dimensional analysis.
  • pogs
  • · Replies 2 ·
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2
Find the wave function of a particle in a spherical cavity
  • docnet
  • · Replies 4 ·
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4
How Does Superposition Affect Measurements in a 1-D Harmonic Oscillator?
  • docnet
  • · Replies 1 ·
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1
The Euler Equation and Incompressible Fluid Theorems
  • aclaret
  • · Replies 7 ·
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7
Electromagnetism - movement of a coil in a magnetic field
  • Ali123
  • · Replies 6 ·
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6
What Is Energy Degeneracy in a Cubical Box?
  • docnet
  • · Replies 8 ·
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8
Bending proton beams under magnetic field
  • hubbard97
  • · Replies 1 ·
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1
Calculate the Energy Levels of an Electron in a Finite Potential Well
  • docnet
  • · Replies 4 ·
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4
Spherically symmetric states in the hydrogen atom
  • docnet
  • · Replies 2 ·
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2
Explaining Quantum Correlation by Comparing It To Road Traffic
  • physconomic
  • · Replies 2 ·
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2
Showing that this identity involving the Gamma function is true
  • Markus Kahn
  • · Replies 1 ·
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1
Prove the reflection and transmission coefficients always sum to 1
  • Pendleton
  • · Replies 10 ·
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10
Average Energy density and the Poynting vector of an EM wave
  • edfink1
  • · Replies 1 ·
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1
Polarized wave in an anisotropic medium
  • lholmes135
  • · Replies 3 ·
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3
Understanding the Energy States of a Particle in a Finite Potential Well
  • docnet
  • · Replies 7 ·
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7
Lagrangian of a mass bewteen two springs with a pendulum hanging down
  • Davidllerenav
  • · Replies 9 ·
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9
Change in the direction of motion of the particle
  • TheDispStud
  • · Replies 7 ·
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7
Magnetohydrodynamics - Derivation of PDE
  • n0b1
  • · Replies 3 ·
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3
Fourier transform of electric susceptibility example
  • schniefen
  • · Replies 6 ·
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6
Treating Oblique Incidence as a Fraunhofer Diffraction Problem
  • physconomic
  • · Replies 1 ·
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1
Expectation value of kinetic energy operator
  • docnet
  • · Replies 1 ·
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1
Simple harmonic oscillator Hamiltonian
  • docnet
  • · Replies 1 ·
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1
Help with Tensors: Using Einstein Summation Convention
  • user1139
  • · Replies 6 ·
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6
Calculating Gamma, L, R1,2 for Excited Ions
  • Jozefina Gramatikova
  • · Replies 1 ·
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1
How to translate expression into momentum-space correctly
  • Markus Kahn
  • · Replies 1 ·
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1
Continuous-variable cat state - phonon number mean and variance
  • matteo137
  • · Replies 1 ·
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1
Estimating the eigenvalue with the second-order pertubation theory
  • mancan987
  • · Replies 1 ·
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1
Question on Cosmology Solution for Tired Light Hypothesis
  • TRB8985
  • · Replies 1 ·
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1
Help with the matrix representation of <-|+|->. Does "+"=|+>?
  • yoyopizza
  • · Replies 4 ·
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4
Non linear BVP using a shooting algoritm with MATLAB?
  • patric44
  • · Replies 6 ·
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6
Einstein's Vacuum Exploring the Metric & Killing Vectors
  • Pouramat
  • · Replies 1 ·
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1
Finding expectation value of two operators in a 3 state QM system
  • berkeman
  • · Replies 38 ·
2
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38
Penrose equation for a vacuum spacetime
  • etotheipi
  • · Replies 1 ·
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1
Finding Electric field E due to an arc
  • Feeziks
  • · Replies 5 ·
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5
Describe the motion of yoyos suspended from the ceiling
  • Matejxx1
  • · Replies 7 ·
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7
Showing that a given propagator is proportional to Green's function
  • JD_PM
  • · Replies 1 ·
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1
Slip Conditions for flow between Parallel Plates
  • SebastianRM
  • · Replies 9 ·
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9
Four-momenta trend as a function of proper time
  • Frostman
  • · Replies 46 ·
2
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46
Prove Lorentz-Fitzgerald Contraction w/ Michelson-Morley Experiment at Any Angle
  • Happiness
  • · Replies 3 ·
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3
Relating volumetric dilatation rate to the divergence for a fluid-volume
  • SebastianRM
  • · Replies 4 ·
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4
Lie derivative of general differential form
  • etotheipi
  • · Replies 2 ·
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2
Why are fermion states anti-symmetric under exchange operator?
  • LCSphysicist
  • · Replies 1 ·
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1
Why Are Gravity Effects Neglected in Stokes Flow Analysis?
  • Est120
  • · Replies 2 ·
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2
Lorentz transformations for electric and magnetic fields
  • Frostman
  • · Replies 7 ·
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7
Energy landscape in the two state model (Boltzmann distribution)
  • MikeGG
  • · Replies 1 ·
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1
Time dilatation between straight and curved lines in Minkowsi space
  • thetafilippo
  • · Replies 19 ·
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19
Prove that these two series are equal
  • chwala
  • · Replies 5 ·
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5
QED, chapter 4 P&S page 125 (Coulomb Potential)
  • Pouramat
  • · Replies 1 ·
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1
Laplace's Equation and Boundary Condition Problem
  • HansBu
  • · Replies 18 ·
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18
Plotting the Poynting vector of a radiating electric dipole [matlab]
  • PhDeezNutz
  • · Replies 118 ·
4
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Showing that the Weyl tensor is invariant under conformal symmetries
  • JD_PM
  • · Replies 1 ·
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1
Calculating Count Rate for Neutron Beam Detection
  • ConorDMK
  • · Replies 2 ·
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2
Gas effusing through hole, working out time dependence
  • physconomic
  • · Replies 1 ·
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1
Periodic and Chaotic Solutions to Chen System/Attractors
  • HansBu
  • · Replies 2 ·
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2
Why is the e-ray sometimes below and sometimes above the o-ray in prisms?
  • daphnelee-mh
  • · Replies 1 ·
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1
Lagrangian for the electromagnetic field coupled to a scalar field
  • Frostman
  • · Replies 7 ·
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7
Solving Damped Driven Pendulum ODEs
  • HansBu
  • · Replies 4 ·
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4
Mass correction in ##\phi^4##-theory
  • Markus Kahn
  • · Replies 9 ·
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9
How to Derive Radial Geodesics in Kerr Metric?
  • JD_PM
  • · Replies 11 ·
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11
Finite Square Well, Ψ[SUB]III[/SUB] const related too Ψ[SUB]II[/SUB]?
  • The Floating Brain
  • · Replies 1 ·
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1
Electron-positron annihilation, photon emission angle
  • Frostman
  • · Replies 13 ·
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13
Heat Diffusion Equation - Using BCs to model as an orthonormal system
  • physconomic
  • · Replies 2 ·
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2
Help with neutron scattering in solid state physics
  • DannyJ108
  • · Replies 11 ·
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11
Mie scattering for inhomogeneous medium
  • Haorong Wu
  • · Replies 5 ·
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5
Exercise 16, chapter 3 (Tetrad) in Carroll
  • Pouramat
  • · Replies 6 ·
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6
Forbidden beta decay form factors
  • ajdin
  • · Replies 1 ·
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1
Getting a conserved charge out of the Kerr metric
  • JD_PM
  • · Replies 3 ·
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3
Check invariance under rotation group in spacetime
  • mcas
  • · Replies 3 ·
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3
Find an expression for a magnetic field from a given electric field
  • TechieDork
  • · Replies 1 ·
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1
Computing a wave function through a (non-relativistic) propagator
  • JD_PM
  • · Replies 2 ·
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2
Electric Field from Non-Uniformly Polarized Sphere
  • Albino173
  • · Replies 7 ·
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7
Carroll chapter 2 questions 9 and 10 on Manifolds
  • Pouramat
  • · Replies 23 ·
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23
Measure Planck's constant without universal constants
  • Heisenberg_white
  • · Replies 3 ·
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3
What is the Constant of Motion in a Rotating Potential Field?
  • etotheipi
  • · Replies 9 ·
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9
Deriving Casimir operator from the Lie Algebra of the Lorentz Group
  • Froggeh
  • · Replies 5 ·
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5
Restricted Boltzmann machine understanding
  • Jufa
  • · Replies 1 ·
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1
Why is [G] Sandwiched by Epsilon Inverses in Tensor Inverse Calculation?
  • Motocross9
  • · Replies 2 ·
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2
Band theory: effective mass and Hall's coefficient
  • chem_
  • · Replies 2 ·
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2
How is the Moment of Inertia Tensor Derived for Rigid Body Rotation?
  • etotheipi
  • · Replies 2 ·
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2
Thought experiment: How would ocean levels change?
  • AN630078
  • · Replies 32 ·
2
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32
Boundary conditions of linear materials
  • Tony Hau
  • · Replies 13 ·
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13
Kinetic Theory - A gas mixture effuses through a hole, find the pressure change
  • physconomic
  • · Replies 10 ·
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10
Rotational partition function for CO2 molecule
  • DannyJ108
  • · Replies 1 ·
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1
Show that the Diffusion Eqn after substitution gives the Helmholtz Eqn
  • jkthejetplane
  • · Replies 12 ·
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12
Debye Approximation of Heat Capacity in 1D
  • jkthejetplane
  • · Replies 1 ·
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1
How Do You Solve H(T) at 1 MeV in Cosmology?
  • Labboi
  • · Replies 1 ·
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1