Advanced Physics Homework Help Forum

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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.
Built in Voltage of 3-Layer PN Junction
  • Mr_Allod
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Checking if a function is an equipotential surface
  • patric44
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3
Spinning ball deviation from straight path | Magnus effect
  • JD_PM
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1
Phonon density of states and density of states of free electrons
  • chikchok
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3
Why Shift ##z_0## by ##-i\epsilon## in Non-Convergent Integrals?
  • Jufa
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1
How to explain the Quantum Mechanics/Math of the stages of MRI imaging
  • kbansal
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4
Depletion width of linearly doped PN-junction
  • Mr_Allod
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1
Fermi-Dirac distribution at T->0 and \mu->\epsilon_0
  • mcas
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1
Linear momentum of the Klein Gordon field
  • Jufa
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2
I have to prove that vectors in spherical coordinates are clockwise
  • Danielle46
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2
A problem in graphing electric field lines
  • patric44
  • · Replies 17 ·
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17
How Do Bound Charges Affect Polarization in Electrodynamics?
  • Gustav
  • · Replies 27 ·
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27
Calculating Bound Charge Density & Polarization
  • Gustav
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1
Analysing the Normal Modes and Dynamics of a Cluster of Atoms
  • Mr_Allod
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1
Find the equation of motion using the Lagrangian for this Atwood machine
  • Istiak
  • · Replies 7 ·
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7
Find equation of motion of an inclined plane when there's friction
  • Istiak
  • · Replies 2 ·
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2
Equilibrium circular ring of uniform charge with point charge
  • PhDeezNutz
  • · Replies 7 ·
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7
Unstable or stable electrostatic equilibrium?
  • Angela G
  • · Replies 69 ·
3
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69
Conservation of the Laplace-Runge-Lenz vector in a Central Field
  • stephenklein
  • · Replies 3 ·
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3
Solving Vector Potential: Calculating Magnetic Field & Difficulties
  • Gustav
  • · Replies 44 ·
2
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44
The Pressure-Entropy Relationship for a Photon Gas
  • Bookworm092
  • · Replies 3 ·
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3
Using Lagrangian to show a particle has a circular orbit
  • gromit
  • · Replies 4 ·
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4
Time-dependent Perturbation Theory
  • Viona
  • · Replies 8 ·
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8
How to Derive the Expression for \(\delta W = -E dP\)?
  • appmathstudent
  • · Replies 4 ·
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4
Is the magnetic field B→. a state function and exact differential?
  • johankep
  • · Replies 5 ·
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5
Overlap integral of hydrogen molecule
  • hicetnunc
  • · Replies 1 ·
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1
Why the bra vector is said to belong in the dual space?
  • patric44
  • · Replies 15 ·
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15
Zero-point energy of diatomic hydrogen (particle in a box)
  • Mayhem
  • · Replies 3 ·
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3
Is my procedure for finding the S_z matrix correct?
  • Viona
  • · Replies 19 ·
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19
Expanding potential in Legendre polynomials (or spherical harmonics)
  • rnielsen25
  • · Replies 1 ·
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1
Simple lie algebra that holds just four generators?
  • PhysSub
  • · Replies 2 ·
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2
Using the Frobenius method on a 2D Laplace
  • jkthejetplane
  • · Replies 6 ·
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6
How to find the partition function of the 1D Ising model?
  • Dom Tesilbirth
  • · Replies 1 ·
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1
Fourier transform of the ground state hydrogen wave function
  • Ado
  • · Replies 9 ·
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9
Finding unitary operator associated with a given Hamiltonian
  • ubergewehr273
  • · Replies 3 ·
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3
Solving Problem 4 of DJ Griffiths Electrodynamics Chapter 9
  • Zeeshan Ahmad
  • · Replies 3 ·
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3
Expressions for energy & entropy from free energy (discrete distribution)
  • baseballfan_ny
  • · Replies 6 ·
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6
How do I correctly find the Christoffel symbol for a specific component?
  • jordy1113
  • · Replies 4 ·
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4
Momentum transfer in electron-proton collision
  • TheMercury79
  • · Replies 10 ·
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10
How do I calculate variance for volume, 𝑉 (i.e, ⟨Δ𝑉2⟩=⟨𝑉2⟩−⟨𝑉⟩2)?
  • bumblebee77
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2
Is My Solution for the Speed of a Decaying Particle Correct?
  • lriuui0x0
  • · Replies 13 ·
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13
The resultant intensity of two interfering waves
  • Dom Tesilbirth
  • · Replies 7 ·
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7
Find the values of A, B, and C such that the action is a minimum
  • Istiak
  • · Replies 3 ·
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3
Semi empirical mass formula derivation help
  • artis
  • · Replies 4 ·
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4
Find velocity with vector or without vector
  • Istiak
  • · Replies 3 ·
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3
3D Laplace solution in Cylindrical Coordinates For a Hollow Cylindrical Tube
  • jkthejetplane
  • · Replies 1 ·
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1
Can the Time-Energy Uncertainty Relation Simplify the Schrodinger Equation?
  • Wannabe Physicist
  • · Replies 2 ·
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2
Find the eigenfunction and eigenvalues of ##\sin\frac{d}{d\phi}##
  • Wannabe Physicist
  • · Replies 6 ·
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6
A Process of Successive Approximations
  • Viona
  • · Replies 2 ·
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2
Rotation of a photograph of an object due to relativity
  • user1139
  • · Replies 3 ·
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3
What happens to an atom's angular momentum when it absorbs an electron?
  • LCSphysicist
  • · Replies 1 ·
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1
What Parameter Should Be Used in Variational Approximation for This Hamiltonian?
  • LCSphysicist
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1
Help with Kaluza Klein Christoffel symbols
  • user1139
  • · Replies 2 ·
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2
Is There a Flaw in Understanding Proper Time and Time Dilation?
  • Wannabe Physicist
  • · Replies 5 ·
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5
Relative intensities of fine-structure components in an alkali
  • hicetnunc
  • · Replies 2 ·
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2
Lorentz transformation of electron motion
  • PainterGuy
  • · Replies 13 ·
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13
Sakurai Question regarding density matrix
  • mpresic
  • · Replies 10 ·
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10
On the Validity of Swapping Dummy Indices in Tensor Manipulation
  • Wannabe Physicist
  • · Replies 2 ·
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2
Violate current conservation in Perfect Magnetic Conductor (PMC)
  • baby_1
  • · Replies 2 ·
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2
How Does Scalar QCD Beta Function Calculation Differ in Various Sources?
  • fenyutanchan
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1
What is the relationship between tension and mass for an artificial satellite?
  • adammish
  • · Replies 10 ·
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10
Operator acts on a ket and a bra using Dirac Notation
  • Viona
  • · Replies 14 ·
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14
Potential outside a grounded conductor with point charge inside
  • daiisibil
  • · Replies 7 ·
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7
Modes in a cylindrical dielectric waveguide
  • krakatoa
  • · Replies 4 ·
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4
Help in understanding the derivation of Einstein equations
  • user1139
  • · Replies 2 ·
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2
Phase velocity in oblique Angle propagation (Plane wave)
  • baby_1
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3
How Do You Compute Killing Vectors for a Given Metric?
  • LCSphysicist
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1
Constructing an Eigenvector of S with Eigenvalue λ1
  • Passers_by
  • · Replies 29 ·
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29
Eigenstates, Eigenvalues & Multicplity of Hamiltonian w/ Spin 1/2
  • LCSphysicist
  • · Replies 3 ·
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3
Charge invariance with Heaviside's function
  • Frostman
  • · Replies 17 ·
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17
Proof involving exponential of anticommuting operators
  • Joker93
  • · Replies 1 ·
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1
Conservation of charge with Dirac delta
  • Frostman
  • · Replies 5 ·
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5
How Does Tensor Differentiation Simplify in Multiferroics Homework?
  • Nickpga
  • · Replies 21 ·
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21
Attenuation and Phase constant values in wave equation
  • baby_1
  • · Replies 2 ·
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2
Time evolution of a particle in momentum space
  • Foracle
  • · Replies 1 ·
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1
Help With Negative Phases in a Numerical Term
  • Blanchdog
  • · Replies 1 ·
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1
De-excitation of a moving atom with photon emission
  • Frostman
  • · Replies 6 ·
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6
Discrepancies in Electron Wavefunction Probability Calculation?
  • hicetnunc
  • · Replies 7 ·
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7
What Are the Key Characteristics of Inertial Waves in Uniform Rotation?
  • Angelo Pascal
  • · Replies 2 ·
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2
Understanding the determination of Radon activity
  • user1139
  • · Replies 2 ·
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2
Finding Energy in FCC Lattice Using Weak Potential Method
  • mcas
  • · Replies 1 ·
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1
Understanding the Conservation of Momentum in Special Relativity Collisions
  • Haorong Wu
  • · Replies 2 ·
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2
Kepler problem in parabolic coordinates
  • Kate_12
  • · Replies 1 ·
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1
Capacitance of a parallel-plate Capacitor with non uniform dielectric
  • approx12
  • · Replies 17 ·
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17
Noether Current: Understanding 2.10 & 2.11
  • LCSphysicist
  • · Replies 1 ·
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1
What makes up a "current" in solid state physics?
  • cemtu
  • · Replies 7 ·
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7
Gibbs free energy for superconductor in intermediate state
  • patric44
  • · Replies 1 ·
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1
Weakly interacting Bosons in a 3D harmonic oscillator
  • rmiller70015
  • · Replies 4 ·
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4
Transformation rules for vielbein and spin connection
  • Steve Rogers
  • · Replies 2 ·
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2
Proving ##C## is constant in 4-dim ##R_{\mu\nu}=Cg_{\mu\nu}##
  • crime9894
  • · Replies 3 ·
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3
RG flow of quadrupole coupling in 6+1 dimension electrostatic problem
  • DaniV
  • · Replies 1 ·
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1
Unit calculations - DWI MRI (Stejskal-Tanner)
  • Eowyn
  • · Replies 1 ·
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1
Combining the Spins of 3 spin 1 particles
  • rmiller70015
  • · Replies 2 ·
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2
Calculating work and heat transfer in this Carnot process
  • approx12
  • · Replies 1 ·
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1
What is the number of confined states in these potential wells?
  • patric44
  • · Replies 3 ·
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3
Help in showing that this inner product is zero
  • user1139
  • · Replies 3 ·
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3
How Does Symmetrization Affect Boson Spin Degeneracies?
  • rmiller70015
  • · Replies 4 ·
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4
Ultra high energy cosmic ray deflection angle causes by magnetic field
  • Mikkel
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1
Estimating the energy of an alpha particle using Bethe's formula
  • PandaKitten
  • · Replies 9 ·
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9
Scale factors in spherical coordinates
  • Est120
  • · Replies 1 ·
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1