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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Radius of Surface of Last Scattering
- Cheetox
- · Replies 10 ·
Calculating Dipole Moment and Potential for Spherical Shell Charge Distribution?
- minimark1234
- · Replies 10 ·
1D SHO in external electric field
- big-ted
- · Replies 3 ·
Finding mass and average density for a star with density profile ρ = ρc[1−(r/R)²]
- beavez
- · Replies 3 ·
Violate the principle of relativity?
- tkm2002
- · Replies 4 ·
Determine potential outside a sphere
- Mythbusters
- · Replies 2 ·
What is the ratio of time for two twins to cross a river at different angles?
- danielatha4
- · Replies 11 ·
What is the phase difference between points P and R in Figure 4?
- PhysicsAShelp
- · Replies 2 ·
Evaluating commutator with hamiltonian operator
- spybear
- · Replies 1 ·
Using Hund's rules to calculate ground state of erbium
- roberto85
- · Replies 1 ·
Finding allowed energies in a finite square well with boundary matching
- 8614smith
- · Replies 1 ·
Relativistic decay of a pion into muon and neutrino
- wooburger
- · Replies 2 ·
How is the density of final states calculated in quantum mechanics?
- eoghan
- · Replies 2 ·
I need the form of potential energy for a simple problem
- Brummell
- · Replies 2 ·
At what position is the net electric field that is produced equal
- laxwarrior
- · Replies 1 ·
Identical Particles Take Home exam :
- emirrime
- · Replies 3 ·
Vector potential due to oscillating dipole
- _Andreas
- · Replies 6 ·
Calc EMF Induced in Flat Circular Coil: 100T, 10cm Radius
- Andromache
- · Replies 4 ·
Coefficients of expansion and compressibility
- Phyisab****
- · Replies 7 ·
Elementary particle Pauli’s exclusion principle
- 8614smith
- · Replies 5 ·
Quantum numbers and energy levels for Li2+ hydrogen-like ion
- 8614smith
- · Replies 4 ·
Plotting ln(3+4i) on an Argand Diagram - Andrew's Query
- metgt4
- · Replies 1 ·
Galilean Coordinate Transformation (Classical Relativity)
- pratikpatel
- · Replies 1 ·
Hubble's constant and decelaration parameter
- doive
- · Replies 2 ·
E1 Transitions: Finding the Minimal Emission Direction in a Hydrogen Atom
- MathematicalPhysicist
- · Replies 1 ·
What does full-scale deflection mean for a 50 microampere VOM?
- phrygian
- · Replies 1 ·
Heat diffusion equation solutions for semi-infinite slab
- Hipp0
- · Replies 1 ·
1-D harmonic oscillator problem
- 8614smith
- · Replies 4 ·
Which cube has a larger moment of inertia?
- Cosmossos
- · Replies 1 ·
Proving angle addition formulas using e^i(θ+φ)
- metgt4
- · Replies 1 ·
Finding Net Force of Charged Sphere
- Void123
- · Replies 1 ·
What is the speed of the fluid when all of it is in the horizontal section?
- befo
- · Replies 1 ·
Internal resistance of an automobile battery with 90 A load
- phrygian
- · Replies 4 ·
Find amplitude and period given velocities at two distances in SHM
- ZackGardner
- · Replies 1 ·
What is meant by thermal average ?
- Pacopag
- · Replies 1 ·
How Much Does the Caboose Weigh After a Collision?
- alaajassar
- · Replies 1 ·
A mechanics problem: two masses, one dangling from a table
- quasar_4
- · Replies 1 ·
Kinetic energy distribution in beta decay of caesium-137
- Minus1
- · Replies 1 ·
Solve Neutrino Oscillation Unit Conversion Problem
- D.R.
- · Replies 2 ·
Method of Images in Electrostatics
- timhunderwood
- · Replies 5 ·
Quantum:- SHO potential and its energy
- indie452
- · Replies 2 ·
What is the physical significance of an electric field divergance of zero?
- Raven1512
- · Replies 3 ·
Is My Procedure Correct for Charge Density and Electric Field?
- xz5x
- · Replies 2 ·
Find the center of mass with tripl-integral
- ppitsme
- · Replies 13 ·
How to Minimize Vertical Vibrations in a Machine with a Vibration Absorber?
- pradi4u
- · Replies 1 ·
How Do You Solve the Vibration Equation of Motion?
- pradi4u
- · Replies 1 ·
Proof of Killing Vectors Commutator Theorem
- Altabeh
- · Replies 2 ·
Find acceleration of a 1.4 kg toy rocket after engine cutoff
- spoony33
- · Replies 1 ·
Optical Solitons - General understanding and Project ideas
- Hard Maths
- · Replies 2 ·
Normalization of a Spherical Harmonic
- lavenderblue
- · Replies 1 ·
Simple exponential multiplication (electron interfernce)
- Moonspex
- · Replies 2 ·
What is the velocity of the brick when it strikes the gutter?
- headshrinker
- · Replies 1 ·
Diagonalizing Martrix (S) question
- astropi
- · Replies 2 ·
Stuck on Problem 6.2 in Peskin's QFT Book?
- kprkpr
- · Replies 1 ·
Mean Value Theorem of Electrostatics
- pmb_phy
- · Replies 11 ·
Solve Conservation of Energy & Momentum: Photon & Electron Collision
- Minus1
- · Replies 4 ·
How Many Bright Fringes in Central Diffraction Maximum?
- foxx0775
- · Replies 1 ·
How do we find the null geodesic for a 2D spacetime with a positive constant?
- quasar987
- · Replies 18 ·
Finding current in a complex circuit with resistors
- Goomba
- · Replies 4 ·
Taylor Involved: Understanding Rotation Operators
- Cosmossos
- · Replies 1 ·
Quantum mechanics - born approximation algebra
- sxc656
- · Replies 2 ·
Where does the 2π factor come from in the scattering cross section?
- david_clint
- · Replies 2 ·
What do the terms in Poynting's theorem mean physically?
- jeebs
- · Replies 1 ·
How Much Does Samantha Age During Her Trip to Zircon?
- Heidi M
- · Replies 7 ·
Calculate Relativistic Mass of Combined Particle
- kwuk
- · Replies 1 ·
Fermi energy, wave vector and Fermi velocity for sodium metal
- TFM
- · Replies 14 ·
Special relativity/velocity transformations
- QuantumParadx
- · Replies 4 ·
Heat capacity ratio for diatomic gases
- jaejoon89
- · Replies 1 ·
Are there momentum/energy Minkowski diagrams?
- bjnartowt
- · Replies 1 ·
Quantum Mechanics algebra - complex analysis
- sxc656
- · Replies 4 ·
Hydrogen Atom; energy state transitions
- hhhmortal
- · Replies 5 ·
FID Fourier transform spectrum and even function properties
- johnq2k7
- · Replies 6 ·
How Does Finite Acquisition Time Affect the Spectrum of an NMR Signal?
- johnq2k7
- · Replies 17 ·
Advance Calculating Internal Concentrations of Ions
- af86
- · Replies 7 ·
Center of mass velocity after inelastic collision of equal masses
- TaintedLove
- · Replies 1 ·
How Do You Calculate Speed and Momentum for a 2D Inelastic Collision?
- TaintedLove
- · Replies 1 ·
How Does Gradient Direction Affect NMR Signal Characteristics?
- johnq2k7
- · Replies 1 ·
What is the induced voltage in the tilted coil frame?
- vertyu
- · Replies 8 ·
How do you work out the phase difference between 2 waves?
- George321
- · Replies 1 ·
Angular acceleration and it's mass dependancy
- j-e_c
- · Replies 2 ·
Help identifying an unlabeled physics instrument
- aliii
- · Replies 1 ·
What Fraction of a Water Molecule's Mass is Hydrogen?
- sxc656
- · Replies 2 ·
How to Solve Free Expansion of a Gas Problem?
- BiohazardPT
- · Replies 4 ·
Lagrangian for a particle in a curved manifold with position-dependent metric
- vertices
- · Replies 1 ·
Is 600J the Minimum Heat Transfer to Maintain Entropy in a Thermodynamic Cycle?
- Bigfoots mum
- · Replies 1 ·
Error propagation with sin(4θ) in r = D·sin(4θ)/2
- Unto
- · Replies 7 ·
Plasma Physics and Controlled fusion problems
- Abdurahman
- · Replies 3 ·
Calculating Probability of Particle in First Excited State
- oddiseas
- · Replies 1 ·
How Does Bose-Einstein Condensation Affect Pressure in an Ideal Bose Gas?
- tayyaba aftab
- · Replies 1 ·
Calculating number of ion channels in lipid bilayer
- af86
- · Replies 6 ·
Neutron collision from com frame
- Mr confusion
- · Replies 18 ·
Quantum physics - time dependant changes
- david_clint
- · Replies 2 ·
Hamiltonian being a function of either orbital and spin operators
- go quantum!
- · Replies 1 ·
Fourier transform of γe^(-γ|x|)/2
- Snoopey
- · Replies 2 ·
Degenerate perturbation theory first-order correction signs and order terms
- sxc656
- · Replies 4 ·
Diameter of a wire with length, resistance and resistivity
- Elka
- · Replies 2 ·
How Are Irreducible Representations of O(3) and SO(3) Derived from SU(2)?
- Rory9
- · Replies 4 ·
Energy Stored leading to Dielectric breakdown
- HPRF
- · Replies 1 ·
Evaluating Integral with Spherical Coordinates Using 4-Vectors
- parton
- · Replies 3 ·