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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Calculating Reaction Energy and Velocity in a Proton-Electron Collision
- hesus
- · Replies 6 ·
Can you square both sides of a four-vector equation after rearranging?
- whyamihere
- · Replies 7 ·
Quantum Mechanics - Angular Momentum probability
- Tangent87
- · Replies 2 ·
Calculating Impedance and Drawing a Basic Phasor Diagram
- maherelharake
- · Replies 2 ·
How Is Redshift Calculated in Changing Epochs?
- ajclarke
- · Replies 9 ·
Finding the kinetic energy of an electron
- bear421
- · Replies 2 ·
How to find out if a planet can have a atmostsphere
- leonne
- · Replies 3 ·
Is the Gravity Term Correct in Buoyancy Calculations?
- xago
- · Replies 1 ·
How to Prove [A,B^{n}]=nB^{n-1}[A,B]?
- dimensionless
- · Replies 5 ·
Covariance equations of motion and symmetry
- phoenixofflames
- · Replies 1 ·
Light in an optical fiber - variational calculus
- physman55
- · Replies 6 ·
Why does [x, p²] = 2iℏ instead of 0 when computing directly?
- Ene Dene
- · Replies 6 ·
Work by an ideal gas in a thermodynamic cycle
- merbear
- · Replies 2 ·
Deriving the Nambu-Goto Equation of Motion
- latentcorpse
- · Replies 5 ·
How to Find the Speed of Particles from a Decay Event?
- matrix0978
- · Replies 1 ·
Improving the accuracy of a Java simulation of n-orbital bodies
- CyJackX
- · Replies 7 ·
How to Approach a Three-Dimensional Force System with a Corner Joint?
- mneox
- · Replies 1 ·
De Broglie wavelength of electron in first Bohr orbit
- reality99
- · Replies 1 ·
Numerical Computation (Euler method)
- helpcometk
- · Replies 2 ·
Understanding General Relativity: Questions on Page 11 of Notes
- latentcorpse
- · Replies 24 ·
Spacetime represented in coordinate geometry
- geminihunter
- · Replies 1 ·
Glashow model left/right hypercharge ratio
- Hypochondriac
- · Replies 7 ·
Energy splitting from spin-orbit interaction.
- soothsayer
- · Replies 1 ·
Bell's Theorem: Griffiths' Probability Density & Indeterministic QM
- touqra
- · Replies 2 ·
External Fields and Negative Energy Transitions In Dirac Particle
- javiergra24
- · Replies 4 ·
First Law of Thermodynamics - Correct Formulation?
- guyguy
- · Replies 6 ·
Is There a Hidden Factor in the Definition of [A,A]?
- Dox
- · Replies 2 ·
For what Z values does an atom begin to differ from a nonrelativistic model?
- hb1547
- · Replies 4 ·
What is the charge density of the wire?
- hanagasumi
- · Replies 2 ·
How Do You Derive the FRW Metric for a Closed Universe?
- Skye
- · Replies 1 ·
The T dS equations and Sackur-Tetrode equation
- mathman44
- · Replies 3 ·
Constructing Eigenstate for a given hamiltonian
- mahondi
- · Replies 5 ·
What is the Lattice Constant of Iron?
- mjordan2nd
- · Replies 1 ·
Stuck on Shankar Problem 14.4.3?
- Quiablo
- · Replies 1 ·
Interaction Hamiltonian for two coupled oscillators
- bon
- · Replies 3 ·
Is the Wave Equation Invariant Under a Lorentz Boost?
- B-80
- · Replies 1 ·
Solving for v(t), tmax, and Max Height of a Thrown Ball
- zeromaxxx
- · Replies 4 ·
How Does Pressure Change with Altitude?
- jason177
- · Replies 4 ·
Calculating Speed of Lead Bullet on Steel Sheet
- joyana32
- · Replies 1 ·
Showing N and K_r commute using ladder operators
- Tangent87
- · Replies 4 ·
Observers moving at the speed of light (Relativity)
- yetiboy
- · Replies 4 ·
Angular velocity of rotating ring with suspended mass
- Mandeep Deka
- · Replies 21 ·
Plasma physics - single particle in time-varying B-field
- quarky2001
- · Replies 2 ·
What Are the Possible Wavelengths of the Second Light in a Two-Slit Experiment?
- mneox
- · Replies 1 ·
Finding velocity for half-rate time dilation and half-length contraction
- erok81
- · Replies 1 ·
What Is the Electric Field Inside a Metal Ball in a Uniform Field?
- ChrisMC
- · Replies 1 ·
How Is Total Lifetime Calculated for a System with Multiple Decay Modes?
- maherelharake
- · Replies 17 ·
Density Parameters using Mathematica
- Rick88
- · Replies 5 ·
Cable on a Table (classical mechanics)
- bluedrew
- · Replies 1 ·
Home Cooking Tips and Recipes""Delicious Home-Cooked Meals: Tips & Recipes
- jdw_
- · Replies 1 ·
What Are the Equations of Motion for a Disc on a Rough Surface?
- confused89
- · Replies 1 ·
Plane wave at dielectric boundary with Gauss's law and polarization
- chantinh10111
- · Replies 9 ·
Showing zero entropy change when heating water with a Carnot engine
- tjackson3
- · Replies 5 ·
A Problem from Work, Kinetic Energy, and Power
- fiddleninja
- · Replies 2 ·
Solving a nonlinear differential equation from homework
- abdooo89
- · Replies 3 ·
QM decomposing linear polarization states
- doublemint
- · Replies 4 ·
General relativity question on mass conservation integral
- tcw
- · Replies 1 ·
Blackbody energy detector, from Liboff's QM
- cstalg
- · Replies 2 ·
Expectation value of the angular momentum operator
- CanIExplore
- · Replies 4 ·
What value of q/Q maximizes the electrostatic force between two spheres?
- Lavid2002
- · Replies 16 ·
Potential Energy Operator subjected to a Coulombic Potential
- benrogers7511
- · Replies 1 ·
Representing Wavefunction as Superposition of Eigenstates
- Kvm90
- · Replies 1 ·
Relativistic Energy/Momentum of Particles
- div4200
- · Replies 1 ·
<r> and <V(r)> in the Hydrogen Atom.
- dirtyaldante
- · Replies 14 ·
Electric flux through one face of the cube.
- musicman05
- · Replies 3 ·
Difference between a magnetic field and an electric field
- Nicholas.D
- · Replies 1 ·
DYNAMICS QUESTION S.O.S (kinematics of particle)
- chrishatch
- · Replies 1 ·
Deriving the mass conservation integral in GR
- tcw
- · Replies 4 ·
Microwave Spectroscopy - Obtaining info when isotope absorptions are known
- Horseb0x
- · Replies 1 ·
What is the thermal efficiency of an ideal gas cycle?
- tjackson3
- · Replies 2 ·
Integration by parts of a dot product scalar integrand
- bjnartowt
- · Replies 7 ·
Does splitting a matrix into diagonal and off-diagonal parts preserve the basis?
- jeebs
- · Replies 6 ·
How do you calculate the total number of states from equation 16?
- Shackleford
- · Replies 1 ·
Last thing to be recorded near Black Hole
- Astro.padma
- · Replies 5 ·
Volume of a solid based on number of atoms
- emol1414
- · Replies 1 ·
Does the Equation of Motion Satisfy the Commutator Relation?
- jeebs
- · Replies 6 ·
How Much Will Mercury Rise in a Thermometer Due to Thermal Expansion?
- NvZnPhysics
- · Replies 2 ·
How Does a Photon Rocket's Velocity Depend on Its Mass Reduction?
- ajclarke
- · Replies 7 ·
Solve Physics Q1 from 2007 Paper61. Cambridge Maths Postgrad
- latentcorpse
- · Replies 54 ·
Why Do Stress Levels Vary Between Two Gauges on a Thin-Walled Pressure Vessel?
- imnotadmin
- · Replies 1 ·
Why Does the Derivative Transformation Use Cosine in Spherical Coordinates?
- dingo_d
- · Replies 3 ·
Calculating Electron Energy with Uncertainty Principle: Homework Example
- v_pino
- · Replies 5 ·
Can the speed of light be observed to be faster than c?
- moogull
- · Replies 3 ·
How Do You Normalize a Quantum State in Quantum Mechanics?
- quixi
- · Replies 3 ·
Entropy as a function of a density operator?
- jeebs
- · Replies 1 ·
SO(10) 16 representation, decomposition & young tableau
- Porrum_doctum
- · Replies 3 ·
Lorentz transformations on spacetime
- helpcometk
- · Replies 3 ·
Electron Density of Silver: Calculate With Formula
- magnifik
- · Replies 1 ·
How Does Time Dependence Affect Quantum Operators?
- Mathitalian
- · Replies 7 ·
How Do You Solve These Projectile Motion Problems?
- 7up
- · Replies 6 ·
Stationary state of two body wave function
- Piano man
- · Replies 1 ·
How do I find the resulting 4x4 matrix for the square of \eta?
- quixi
- · Replies 1 ·
How to relate impulse with speed of the ball
- zorro
- · Replies 14 ·
What is the conjugate impedance of 30+j40?
- KnightMars
- · Replies 2 ·
Calculating Wavelength of Emitted Radiation in Carbon Monoxide Molecule
- v_pino
- · Replies 1 ·
How Do Killing Vectors Represent Spacetime Symmetries in Stephani's Relativity?
- Pengwuino
- · Replies 3 ·
Solving Mechanics Q: Who Wins Car A or B at Turn?
- nlsherrill
- · Replies 3 ·
Solving the Reif Problem 2.4: Isolated System of Spin 1/2 Particles
- gc2004
- · Replies 2 ·
Symmetry of a lagrangian & Noether's theorem
- irycio
- · Replies 2 ·
What is the next step in solving kaon decay using relativity?
- Owen-
- · Replies 2 ·