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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Linear Combinations of Eigenfunctions
- Rahmuss
- · Replies 19 ·
Millikan Oil Drop Experiment: Solving Homework Equations
- howin
- · Replies 1 ·
Electric Field Approximation for Linear Quadrapole Problem
- Old Guy
- · Replies 8 ·
Normalization of a wave function with cosine
- wakko101
- · Replies 6 ·
Is there a nice short version of the L squared operator
- Brewer
- · Replies 6 ·
Zwiebach Problem 8.6: Explaining "We Do Not Use the Equations of Motion
- ehrenfest
- · Replies 2 ·
Zwiebach Page 197: Checking Translations & Commutators
- ehrenfest
- · Replies 2 ·
Solving Lagrangian Mechanics: Rod and Bean System Explained
- Kate R
- · Replies 3 ·
Christoffel Symbols: Solving GR Homework | Fred
- n1mrod
- · Replies 5 ·
Sum of Spacelike Vectors: Always Spacelike?
- ehrenfest
- · Replies 2 ·
Harmonic oscillation, spring not attached to center of mass
- Antti
- · Replies 1 ·
Creation of an Electron-Positron Pair by a Photon
- howin
- · Replies 1 ·
Derivation of the Hamiltonian of the Heisenberg model
- genloz
- · Replies 1 ·
Deriving Formulas for Vmin & Vmax on Glare Ice w/ Zero Friction
- fineztpaki
- · Replies 1 ·
Attraction and gravitational force.
- fineztpaki
- · Replies 5 ·
Solving 1-D Wave Equation w/ Fixed Boundaries
- Mindscrape
- · Replies 1 ·
How to Derive the Hamiltonian for a Two-Particle Harmonic Oscillator?
- indigojoker
- · Replies 7 ·
Thermodynamics compression problem
- T-7
- · Replies 2 ·
SHO Eigenvalues with Non-Standard Potential
- indigojoker
- · Replies 6 ·
Formatting Equations in Post: Tips & Tricks
- Old Guy
- · Replies 1 ·
How Does the Sagnac Effect Cause Interference Patterns in a Rotating System?
- n0_3sc
- · Replies 2 ·
A bucket of mass 1.60 kg is whirled in a vertical circle of radius 1.00 m.
- fineztpaki
- · Replies 11 ·
Why Do Zwiebach's Light-Cone Gauge Equations for X^+ and X^- Differ?
- ehrenfest
- · Replies 12 ·
Covariant and contravariant analysis
- ehrenfest
- · Replies 5 ·
Is the Symmetric Tensor or Vector Equal to Zero Given a Specific Condition?
- ehrenfest
- · Replies 9 ·
Angular Velocity of Particle Rod System After Impact
- captainjack2000
- · Replies 5 ·
Crystal Vibrations: Impurity in a monoatomic chain
- Perses
- · Replies 1 ·
Zwiebach Page 194 Q11.3: Understanding "Viewing" a Time-Dependent Heisenberg Op.
- ehrenfest
- · Replies 1 ·
Legendre polynomial integration
- neelakash
- · Replies 6 ·
What is the ground state electron configuration for phosphorus?
- Bill Foster
- · Replies 7 ·
Rolling hoop and lagrange multipliers
- ehrenfest
- · Replies 7 ·
Problem on perturbation theory
- sridhar
- · Replies 1 ·
Special Relativity-Lorentz Transformation
- Qyzren
- · Replies 1 ·
What is a Carnot Engine and How Does it Work?
- tomoyo_13m
- · Replies 3 ·
What Condition Determines Eigenket of A?
- zhaiyujia
- · Replies 3 ·
Quantum Theories: Are Distance and Time Truly Quantized?
- Phred101.2
- · Replies 5 ·
Partial derivatives - proving force is conservative
- Oblio
- · Replies 27 ·
Proton Scattering: Calculating Current Density
- madeinmsia
- · Replies 1 ·
Generalized coordinates: Understanding Kinetic Energy
- ehrenfest
- · Replies 3 ·
A straight line thermodynamic transformation
- T-7
- · Replies 2 ·
How Are Spin, SO(3), and SU(2) Related in Quantum Mechanics?
- plmokn2
- · Replies 1 ·
Calculating Tension in a Flying Pig's Rope: Centripetal Force Explained
- Centripetal X
- · Replies 1 ·
1-D simple harmonic oscillator
- indigojoker
- · Replies 3 ·
Projectile Motion Maybe Parametric equations?
- Lebelee
- · Replies 1 ·
Prove that spin in arbitary direction is hbar/2
- cks
- · Replies 1 ·
How Does an Electric Field Affect the Quantum Harmonic Oscillator?
- ehrenfest
- · Replies 3 ·
How do I solve for B in this moment and vector homework?
- ThomasHW
- · Replies 10 ·
What Is the Ratio of Nuclear to Atomic Radius for Mid-Periodic Table Elements?
- HungryChemist
- · Replies 7 ·
How Do You Derive the Lagrangian for a Pendulum on an Oscillating Cart?
- noranne
- · Replies 2 ·
Physical Chemistry, P.W.Atkins, the Schrödinger equation
- Dj pie safety
- · Replies 5 ·
How Do You Calculate a 3D Line Integral Along Multiple Paths?
- extreme2000
- · Replies 1 ·
Wavelength of Incident Photon?
- VenomHowell15
- · Replies 2 ·
Finding the Mirror Image Charge for a Point Charge Near a Conducting Sphere
- Bloodplasma
- · Replies 2 ·
Electrostatic Self-energy of an arbitrary spherically symmetric charge density
- harshey
- · Replies 5 ·
Couple of questions Please help Point particle orbiting two charges
- mrk442
- · Replies 2 ·
Solving Eigenket Homework: Show A† Has Eigenbra <a*| to Eigenvalue a*
- ConeOfIce
- · Replies 4 ·
Ground and Excited States in a Potential Well (QM)
- Poop-Loops
- · Replies 1 ·
Help with Hartle: Calculating Elapsed Time
- HeLLe
- · Replies 2 ·
Mach zhender interforometer (round 2).
- MathematicalPhysicist
- · Replies 1 ·
Help w/ Zwiebach Pg 178 Eq 10.73 & Why "In Momentum Space" is True
- ehrenfest
- · Replies 24 ·
How Far Apart Are the Minima in Young's Single Slit Experiment?
- stryker123
- · Replies 1 ·
Designing a Parallel-plate capacitor
- Bloodplasma
- · Replies 2 ·
Poisson's equation in 2 dimensions
- ehrenfest
- · Replies 8 ·
What is the method for solving the eigenvalue problem with integration by parts?
- MagicQuantum
- · Replies 1 ·
How Does a String with Varying Mass Move Through a Hole in a Table?
- Microzero
- · Replies 1 ·
Calculating Probability Current for Wave Function
- T-7
- · Replies 3 ·
How Do Energy and Momentum Conservation Apply to a Mass Sliding Down a Wedge?
- captainjack2000
- · Replies 5 ·
Understanding Einstein Notation for Derivatives of Fields
- ehrenfest
- · Replies 6 ·
Calculating Total Spin of an n-quark Hadron
- noospace
- · Replies 1 ·
Read the Clebsch-Gordan Coefficients?
- pivoxa15
- · Replies 1 ·
Calculating Average Values and Proving Inequality for Particle Potential - N^nX
- ultimateguy
- · Replies 4 ·
How Do Commutators Work in Quantum Mechanics?
- igaffed
- · Replies 1 ·
Question: Does Epsilon = i A^+/p^+ for Zwiebach Page 178?
- ehrenfest
- · Replies 2 ·
Zwiebach Page 172: Understanding Momentum and Length
- ehrenfest
- · Replies 4 ·
Is 2EN^2 dx^3 a Relativistic Invariant?
- Magister
- · Replies 2 ·
Using Lagrangian Formulation to Solve a Mass on a Wedge Problem
- bit188
- · Replies 2 ·
Quantum Mechanics Positional Operator
- UbikPkd
- · Replies 5 ·
Solved Problems for Sakurai Advanced QM - Leticia
- Lecticia
- · Replies 2 ·
Product rule for derivatives of operators
- sridhar
- · Replies 2 ·
Position Operator: f(\hat{x})=f(x)? Effects on g(x)
- zhaiyujia
- · Replies 4 ·
What is the significance of Hermitian components in operators?
- ehrenfest
- · Replies 18 ·
Zwiebach Page 183: Tracelessness with p^2=0?
- ehrenfest
- · Replies 6 ·
Muon energy - Reasonable result?
- December
- · Replies 2 ·
Can Creation and Annihilation Operators Be Simplified This Way?
- ehrenfest
- · Replies 7 ·
Normal frequencies of 2 pendula connected with a massless rigid rod
- smithg86
- · Replies 3 ·
Quantum tunneling probability density
- swain1
- · Replies 2 ·
Electron-Proton Elastic Collision
- Magister
- · Replies 2 ·
Is \(\psi(x) = \frac{1}{x^{\alpha}}\) in Hilbert Space?
- zhaiyujia
- · Replies 4 ·
Deriving Electric Field Energy Density for Arbitrary Charge Distribution?
- mystify
- · Replies 1 ·
Thermal Expansion of Bubbles in a Lake
- Jeann25
- · Replies 3 ·
Can a Satellite's Orbit Around Earth Be Quantized Like a Hydrogen Atom?
- December
- · Replies 2 ·
Special Relativity: Relative speeds of particles
- comwiz72
- · Replies 2 ·
Are there any operators that are not linear?
- stunner5000pt
- · Replies 6 ·
Cartesian Co-ordinates of Plane Wave
- Ayame17
- · Replies 1 ·
Can you show me please trace|a><b|=<b|a>
- tchem
- · Replies 8 ·
Are \( \vec{u_1} \) and \( \vec{u_2} \) Orthogonal and Normalized?
- cscott
- · Replies 16 ·
How Do You Solve a Math Problem Using Spherical Coordinates?
- ThomasHW
- · Replies 12 ·
Cylindrical general differential equation of conduction
- amish99
- · Replies 1 ·
Time independant wave-function can always be taken to be real?
- Poop-Loops
- · Replies 13 ·