Free advanced physics homework help via qualified mentors. Upper undergraduate and graduate level. Please use the template when requesting help and show your work.
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Finding Planck's Formula Transforms for High/Low Frequencies
- vahide
- · Replies 7 ·
Is Lambda Psi a an Eigenstate of Hermitian Operator A?
- quantum_prince
- · Replies 8 ·
How Does a Particle Maintain Constant Velocity in a Pure Magnetic Field?
- KleZMeR
- · Replies 6 ·
Solving 12.10 Zwiebach: Different Basis States?
- ehrenfest
- · Replies 1 ·
What Is the Order of Magnitude of the Spread of Successive Shots at the Target?
- neelakash
- · Replies 14 ·
Equation 12.157: Where do the Four-Momenta Come From?
- ehrenfest
- · Replies 2 ·
How Do You Calculate the Wavelength of Particle Motion in Parametric Equations?
- Logarythmic
- · Replies 3 ·
How Does a Magnetic Field in the X-Direction Affect Electron Energy Levels?
- noospace
- · Replies 2 ·
Chain shape (Euler-Lagrange equations)
- neworder1
- · Replies 3 ·
Velocity and acceleration when object strikes ground after 5 seconds in air
- brendonnn
- · Replies 15 ·
Understanding Heisenberg, Hamiltonians and Spin Chains
- genloz
- · Replies 8 ·
Fish viewed through lens above water with refraction
- ChEJosh
- · Replies 8 ·
How Do Slit Separation and Width Affect Diffraction Patterns?
- Cenois
- · Replies 2 ·
Two Protons Colliding - Finding Minimum Kinetic Energy
- Niles
- · Replies 9 ·
Why does M² = -p² in Zwiebach section 12.4?
- ehrenfest
- · Replies 1 ·
Why does Riemann zeta(s) converge for s = 0.5 when the series diverges?
- ehrenfest
- · Replies 12 ·
Find the electric field at an arbitrary position
- BPBAIR
- · Replies 4 ·
Can I pull x out before applying the momentum operator?
- BeauGeste
- · Replies 4 ·
Carnahan-Starling expansion and compressibility at η = 0.40
- raintrek
- · Replies 3 ·
Zwiebach problem 12.4: why does n enter the zeta function?
- ehrenfest
- · Replies 11 ·
Probabilities for orthonormal wavefunctions
- kac9
- · Replies 4 ·
Finding particle energy in Lorentz frame where motion is purely along y' axis
- gonzoMD
- · Replies 1 ·
Where to Start Solving Magnetic Field of Two Wires
- cwtliew
- · Replies 1 ·
Quantum mechanics - particle in a box
- stevebrown
- · Replies 6 ·
How Do You Calculate Lx and Ly Using Spherical Harmonics in Quantum Mechanics?
- stunner5000pt
- · Replies 1 ·
How Long is the Astronaut Gone in the Twin Paradox with Circular Motion?
- Urd
- · Replies 3 ·
Why does a finite well potential have more equations than unknowns?
- ehrenfest
- · Replies 14 ·
Gravitational force on infinitely long rod
- kaze
- · Replies 2 ·
How Do You Calculate Zero Point Energy for a Half-Harmonic Oscillator?
- physgirl
- · Replies 9 ·
Delta function potential problem
- ehrenfest
- · Replies 8 ·
What Will Be Observed on the Screen After an Electron Passes Through a Slit?
- neelakash
- · Replies 1 ·
How does de Broglie wavelength compare to particle size?
- neelakash
- · Replies 2 ·
Relativistic momentum and conservation of this
- Niles
- · Replies 3 ·
How do I find the Fourier Series for F(t) = sin(wt)?
- physicspupil
- · Replies 1 ·
Why is a particle with energy ≤ 0 bound in a finite potential well?
- ehrenfest
- · Replies 3 ·
Expectation of an Hermitian operator is real.
- noospace
- · Replies 1 ·
Can the Relativistic Velocity Equation Keep Velocities Below the Speed of Light?
- Ayame17
- · Replies 1 ·
Relativistic Group Velocity Calculation
- neelakash
- · Replies 4 ·
What Does Re Mean in Coherent State Equations?
- physgirl
- · Replies 2 ·
Solving General QM Problem: Finding Commuting Operators
- vincebs
- · Replies 3 ·
Normalization of wave function in x, y and z
- Lorna
- · Replies 16 ·
Probability of Momentum in Infinite Well
- Poop-Loops
- · Replies 3 ·
Finding orbital altitude 30 min after perigee passage using Kepler's equation
- Logarythmic
- · Replies 1 ·
Expectation value for a superposition
- T-7
- · Replies 6 ·
(Kinetic Energy) Operator as a Matrix
- ylem
- · Replies 4 ·
Fitting a Sellmeier equation to five refractive index measurements in Matlab
- hrky
- · Replies 2 ·
Can Velocity Reversal Alter Temporal Order in Special Relativity?
- Ayame17
- · Replies 1 ·
Can DiracDelta Functions Be Plotted and Transformed in 2D?
- 10krunner
- · Replies 1 ·
3 Non-Identical Particle System
- sn1986j
- · Replies 2 ·
Equation 12.130 on Zwiebach Page 225: Is an Alpha Missing?
- ehrenfest
- · Replies 1 ·
M^{\mu \nu} Tau-Indep: Zwiebach Pg 229
- ehrenfest
- · Replies 1 ·
Zwiebach question with link to text
- ehrenfest
- · Replies 3 ·
How to Calculate Expectation Value Using Trace?
- cscott
- · Replies 5 ·
How Does Electric Field Affect Potential Change Between Two Points?
- nightwalkervamp
- · Replies 1 ·
Commutator of string oscillator modes in Zwiebach 12.5
- ehrenfest
- · Replies 1 ·
Zwiebach 210 Hmwk: Commutator not Equal 0
- ehrenfest
- · Replies 2 ·
What Is the Correct Interpretation of 4-Vector Momentum Squared?
- Ene Dene
- · Replies 4 ·
Photonic rocket speed when half the initial mass is expelled
- liskawc
- · Replies 2 ·
Understanding Chiral Symmetry in QCD for Heavy Ion Collisions
- nf405
- · Replies 1 ·
Why is 12.28 True if \dot{X'^j} = 0?
- ehrenfest
- · Replies 10 ·
Zwiebach 208: Should There Be a d/dt in Equation 12.17?
- ehrenfest
- · Replies 6 ·
Can Non-Constant Gravity Affect Velocity and Acceleration Equations?
- gill12
- · Replies 2 ·
Finding l and a for hydrogen atom radial equation with R(r) = Ce^(-r/a)
- Eilerson
- · Replies 4 ·
Answer: Fraction of Empty States in GaAs at Room Temp w/E_{F} 0.1eV Below E_{c}
- JoshHolloway
- · Replies 1 ·
Prove magnetic flux is conserved in a magnetic mirror
- Qyzren
- · Replies 1 ·
How do I calculate the radius of bound states for muonic hydrogen?
- Ewok
- · Replies 1 ·
Lie algebras of the Galilean group: Problem three chapter 2 of Wienberg vol. I
- Jim Kata
- · Replies 11 ·
Maximum available energy for proton accelerators
- genloz
- · Replies 3 ·
Finding \langle (\Delta N ) ^2 \rangle for |\beta \rangle
- indigojoker
- · Replies 3 ·
What Is the Maximum Rotation Period for a Cylinder Ride to Prevent Falling?
- orb88
- · Replies 8 ·
Understanding Negative Absolute Temperature: Myth or Reality?
- huyen_vyvy
- · Replies 1 ·
What Are the Steps to Solve Harmonic Motion Problems?
- POKETNRJSH
- · Replies 1 ·
How Are Muon Energies and Angles Determined from Pion Decay in Particle Physics?
- quark.antiquark
- · Replies 1 ·
Calculating Scattering Cross Sections
- strangequark
- · Replies 3 ·
How Many Laps Will a Muon Complete Before Decaying?
- genloz
- · Replies 10 ·
Why is the Term Equivalent to (4/3)x in Conduction Electron Ferromagnetism?
- big man
- · Replies 2 ·
Extinction from interstellar dust with Gaussian density profile
- randa177
- · Replies 1 ·
How to insert Greek letters and LaTeX symbols in posts
- randa177
- · Replies 1 ·
Equations 11.58 and 11.69 in Zwiebach seem contradictory
- ehrenfest
- · Replies 4 ·
Is There an Eigenstate for the Creation Operator?
- indigojoker
- · Replies 31 ·
Finding the Momentum-Space Wave Function for a Harmonic Oscillator Ground State
- Rahmuss
- · Replies 8 ·
Translational motion in Quantum Chemistry
- AbedeuS
- · Replies 5 ·
Coefficient Static Friction Problem
- Lebelee
- · Replies 2 ·
How Are Quark and Proton Wavelengths Related in Quantum Mechanics?
- nf405
- · Replies 2 ·
Solving the Projectile Motion Problem With Air Drag
- Varnson
- · Replies 3 ·
How Do You Derive Lagrange Equations for a Particle on a Sphere?
- ehrenfest
- · Replies 1 ·
Variable mass of a toboggan down a slope
- karnten07
- · Replies 1 ·
Calculate Min Energy of Quantum Oscillator w/ Uncertainty Principle
- villi
- · Replies 1 ·
Eigenstates, Charged Particle/Bead on a Loop in B-Field
- logic smogic
- · Replies 3 ·
Finding a special relativity experiment from published literature
- EvanQ
- · Replies 1 ·
How do energy and momentum conservation apply to relativistic rockets?
- Mazimillion
- · Replies 4 ·
Mechanics, charge in vector potential
- WarnK
- · Replies 2 ·
Quantizing a string in string theory
- ehrenfest
- · Replies 1 ·
Observing O-type Stars: Easier at 1 or 7 Microm?
- randa177
- · Replies 1 ·
Would the Night Sky Be Dark If We Could See 2 mm Wavelengths?
- UMich1344
- · Replies 1 ·
Calculating Expectation Values for x, x^2 in 1D Box
- thenewbosco
- · Replies 7 ·
Covariant Derivative: Proving Rank-2 Tensor Components
- ehrenfest
- · Replies 3 ·
How do I find Christoffel symbols for cylindrical coordinates?
- n1mrod
- · Replies 12 ·