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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.
Why Is the Paraboloidal Wavefront Approximation Valid?
  • yucheng
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Spin-1 particle states as seen by different observers: Wigner rotation
  • SpookyMulder
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5
Quantum Mechanics - Matrix representations
  • Graham87
  • · Replies 9 ·
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9
How Do You Convert Linear Operators to Dirac Notation?
  • guyvsdcsniper
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2
Proving commutator relation between H and raising operator
  • guyvsdcsniper
  • · Replies 4 ·
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4
Intro to quantum mechanics - Spin and linear algebra
  • Graham87
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8
Intro to Quantum Mechanics - Formalism normalisation
  • Graham87
  • · Replies 3 ·
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3
Confusion about four vector notation
  • patric44
  • · Replies 7 ·
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7
Determining Reverse Mass Flow Rate Formula for Multiple Diameter Tubes
  • RealityMechanics
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1
Tong QFT sheet 2, question 6: Normal ordering of the angular momentum operator
  • Gleeson
  • · Replies 27 ·
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27
Deduction of formula for Lagrangian density for a classical relativistic field
  • StenEdeback
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29
Plot the Expectation Value of Spin - Intro to Quantum Mechanics Homework
  • Graham87
  • · Replies 14 ·
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14
Intro Quantum Mechanics - Dirac notations
  • Graham87
  • · Replies 22 ·
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22
Quantum mechanics - Find S_x and S_y
  • Graham87
  • · Replies 6 ·
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6
How the charge imbalance in a plasma changes with time
  • ergospherical
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1
Absorption coefficient and Linear Optical Susceptibility
  • PhysicsTruth
  • · Replies 2 ·
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2
How Does a New Lagrangian Term Affect the Fine Structure Constant?
  • LCSphysicist
  • · Replies 3 ·
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3
How Do You Derive the Klein-Gordon Propagator from Commutation Relations?
  • HadronPhysics
  • · Replies 7 ·
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7
Classical Mechanics: Lagrangian of a falling yo-yo
  • NahsiN
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1
Classical Action for Harmonic Oscillator
  • DeclanTKatt
  • · Replies 1 ·
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1
From General Relativity to Dark Energy
  • Adwit
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3
How can negative integers be used in deriving the Hamiltonian for open strings?
  • Overtoad123
  • · Replies 12 ·
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12
Chapter 2 Griffiths EM Problem: E-Field from a charged ring
  • warhammer
  • · Replies 45 ·
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45
Laplace's equation when there is a point dipole
  • Ahmed1029
  • · Replies 5 ·
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5
Velocity of a relativistic particle in a uniform magnetic field
  • B Rylen
  • · Replies 4 ·
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4
Lorentz invariance of Klein-Gordon eqn & Maxwell Lagrangian
  • spaghetti3451
  • · Replies 19 ·
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19
Calculate the magnetic field from the vector potential
  • arjun_ar
  • · Replies 4 ·
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4
Potential of Concentric Cylindrical Insulator
  • hime
  • · Replies 23 ·
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23
Calculate the isotopic shift of the analogue states for Cr and Mn
  • patric44
  • · Replies 2 ·
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2
Difference Between Landau & Symmetric Gauges for Magnetic Fields
  • raintrek
  • · Replies 1 ·
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1
Miller Indices for FCC and BCC and XRay Diffraction Peaks
  • LukeD
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1
Investigating Lagrangians and Constraints for Tension Calculation
  • mcconnellmelany
  • · Replies 5 ·
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5
Moment of inertia of a double physical pendulum
  • AF Fardin
  • · Replies 4 ·
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4
Is the overall heat transfer coefficient constant for a certain heat exchanger?
  • MarkH748
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1
Fluid Mechanics: streamlines for a flow
  • yrael
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1
To determine the rigidity modulus of a suspension wire.
  • xeonese
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1
Joule-Thomson Expansion of a van der Waals gas
  • eep
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1
2 Derivations of Solenoid's Magnetic Field - Problem
  • sprinkler
  • · Replies 1 ·
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1
X-Ray emission and Bragg Scattering (K-Alpha and K-beta absorption)
  • pyrophysicist
  • · Replies 1 ·
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Fluid flow between parallel plates
  • hamurabi
  • · Replies 1 ·
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1
Three-Dimensional Virial Theorem (Quantum Mechanics)
  • NeoDevin
  • · Replies 1 ·
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1
How do I get the damping coefficient experimentally
  • williamshipman
  • · Replies 1 ·
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1
Quick calculation of lattice parameter and unit cell volume for germanium?
  • mxyplizk
  • · Replies 1 ·
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1
Fermi distribution of 3s electrons of sodium
  • N8
  • · Replies 1 ·
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1
Bloch function - Solid state physics
  • big man
  • · Replies 1 ·
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1
Kinetic and potential energy of harmonic oscillator
  • masudr
  • · Replies 1 ·
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1
Heat enthelpy of molecular hydrogen
  • pentazoid
  • · Replies 1 ·
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1
Force on a charge from an induced dipole
  • Yitzach
  • · Replies 1 ·
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1
Static Equilibrium and reaction forces
  • MAPgirl23
  • · Replies 1 ·
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1
Find the temperature coefficient of resistivity for pure silicon at T=300K
  • opticaltempest
  • · Replies 1 ·
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1
Q-value calculation - nuclear physics
  • Ene Dene
  • · Replies 1 ·
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1
How Do You Calculate Luminous Flux for Different Wavelengths?
  • Amith2006
  • · Replies 1 ·
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1
Perforated Pipe Flow with a closed end
  • p5bombara
  • · Replies 9 ·
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9
Continuity Equation and the Bernoulli's Equation
  • Loneliheart
  • · Replies 1 ·
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1
Helium energy level diagram for ground and first excited states
  • MeiLai
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1
Relative intensity of polarized and unpolarized light in incident beam
  • nanobanano
  • · Replies 2 ·
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2
Frequency of damped vs. undamped oscillator
  • Mindscrape
  • · Replies 3 ·
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3
Fluid Mechanics: Flow Between Parallel Plates-Force Balance Equation
  • Romulus3
  • · Replies 1 ·
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1
Valance band to Conduction Band (Valance Electron), Energy Band Gap Levels
  • GoldenAtlantis
  • · Replies 1 ·
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Moment of Inertia Tensor for a Flat Rigid Body
  • logic smogic
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1
Ideal hcp lattice, ratio c/a = 1.633 proof
  • skyav
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What Does the Scale Show When an Elevator Accelerates Upward?
  • Mohammed17
  • · Replies 1 ·
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Why Is the Magnetic Field Inside the Cylinder Negative?
  • stunner5000pt
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Calculating Latent Heat of Steam: Mass, Temp & Thermal Capacity
  • Salerk
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Finding the time constant given % of max value
  • Katsmed23
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3
Rigid, Non-Rigid and System of Rigid Bodies?
  • sami23
  • · Replies 1 ·
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Charged conducting sphere in a uniform electric field?
  • TMFKAN64
  • · Replies 1 ·
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Energy values of a half harmonic oscillator
  • siifuthun
  • · Replies 1 ·
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Calculate Fermi Temperature for 3He & Neutron Stars
  • raintrek
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Is This Method for Laser Cavity Length Calculation Accurate?
  • Biest
  • · Replies 1 ·
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1
Is the Electric Field Equation for a Coaxial Cable Correct?
  • CL39
  • · Replies 1 ·
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1
Fourier series half and full wave rectifiers
  • steph_mil
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Quantum mechanics - finite square well
  • Graham87
  • · Replies 2 ·
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2
Quantum mechanics - infinite square well problem
  • Graham87
  • · Replies 12 ·
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12
Statistical mechanics and problem with integrals
  • LCSphysicist
  • · Replies 2 ·
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2
Is it possible to find Tensional force from Lagrange?
  • mcconnellmelany
  • · Replies 13 ·
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13
How Does Equation 4.39 Apply to Dipole Moments in Griffith's Problem 4.37?
  • Ahmed1029
  • · Replies 4 ·
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4
Is there a mistake in this tensor multiplication problem?
  • DuckAmuck
  • · Replies 5 ·
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5
Acoustic Impendences in this Ultrasound Imaging problem
  • nao113
  • · Replies 1 ·
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1
Metamerism (vector-matrix representation of color perception)
  • nao113
  • · Replies 1 ·
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1
Double pulley problem using Lagrangian
  • mcconnellmelany
  • · Replies 26 ·
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26
Particle in a box that suddenly expands
  • LCSphysicist
  • · Replies 15 ·
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15
How Far is Nanyang's Star from Earth in Parsecs?
  • Scripturient
  • · Replies 2 ·
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2
Quantum exam practice, operators and eigenstates
  • pogs
  • · Replies 29 ·
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29
Noether theorem and angular momenta
  • LCSphysicist
  • · Replies 1 ·
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1
Rotating object using product of two quaternions
  • Nahrawess
  • · Replies 1 ·
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1
Spring-mass system with a pendulum using Lagrangian dynamics
  • MarkTheQuark
  • · Replies 15 ·
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15
The Mystery of Equation (3.1.3) and the Origin of the Universe
  • bobsan
  • · Replies 2 ·
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2
Where Can I Find Information on the Total Molecular Hamiltonian?
  • Mayhem
  • · Replies 9 ·
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9
Getting the Klein Gordon energy momentum tensor
  • LCSphysicist
  • · Replies 9 ·
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9
Getting geodesic from variational principle
  • LCSphysicist
  • · Replies 2 ·
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2
Thin Film Deposition: Carbazole Molecular Glasses Color Change
  • EL AALLAOUI Najla
  • · Replies 2 ·
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Normal vector of an embedding surface
  • shinobi20
  • · Replies 1 ·
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Entropy of spin-1/2 Paramagnetic gas
  • curious_mind
  • · Replies 7 ·
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7
Limits of Integration in the Transmission Coefficient
  • Samama Fahim
  • · Replies 5 ·
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5
Partition Function for system with 3 energy levels
  • MigMRF
  • · Replies 1 ·
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1
Runge-Lenz vector with perturbation potential
  • breadlover98
  • · Replies 1 ·
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1
Finding Probability of Two-Identical-Particle System in a Given State
  • Samama Fahim
  • · Replies 16 ·
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Calculate qubit states with Schrodinger's equation
  • this_is_my_name
  • · Replies 1 ·
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1
How determine that a matrix is a tensor?
  • GingFritz
  • · Replies 19 ·
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19