Introductory Physics Homework Help Forum

Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.

Threads

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Velocity of an asteroid from an infinite distance

  • Foehammer
  • · Replies 16 ·
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Basic Circuit Q: Why does one get shocked and not the other?

  • feihong47
  • · Replies 6 ·
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Calculating Work Done by Gas in a Mercury-Filled U-Tube with Right Angle Bends"

  • sankalpmittal
  • · Replies 10 ·
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Negative time in equations of motion

  • beck blackfire
  • · Replies 7 ·
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Hydrogen energy levels question

  • Robsta
  • · Replies 16 ·
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What is the initial momentum of the sled-person system?

  • Glenboro
  • · Replies 7 ·
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Conceptual Uniform Circular motion problem?

  • toesockshoe
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1
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Calculating momentum of soccer ball.

  • Glenboro
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Final translational and spin velocities of spinning disc?

  • barns
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What Are the Calculations for the Orbit of Vanguard 1 Satellite?

  • Longee
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Spring Constant to Bring a Car to Rest

  • kieth89
  • · Replies 5 ·
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RL Parallel Circuit Behavior Upon Switch Closure

  • Jzhang27143
  • · Replies 16 ·
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What is the final voltage that a capacitor charges towards?

  • VaishnaviRam
  • · Replies 8 ·
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Solving Electrostatics Doubt: Negative Charge on Ball

  • shrutiphysics
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Protons along a magnetic field line

  • AndrewC1994
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How Does Kinetic Energy Change in a Baseball After Being Hit?

  • Glenboro
  • · Replies 9 ·
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Resistors in parallel with a capacitor, total resistance?

  • Tangeton
  • · Replies 7 ·
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Temperature and Pressure Differences in Identical Rooms

  • shrutiphysics
  • · Replies 7 ·
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Capacitance of four metal plates

  • Patrikp
  • · Replies 4 ·
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4

Transverse Doppler Effect for a Moving Star

  • Dazed&Confused
  • · Replies 1 ·
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Conservation of momentum of a photon

  • SU403RUNFAST
  • · Replies 9 ·
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Capacitor negative charge question

  • Jamessamuel
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How do I determine the age of a sample using radiocarbon dating?

  • mss90
  • · Replies 3 ·
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How Does Planet X's Gravity Affect Rocket Escape Velocity?

  • 15ongm
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Uniform Circular Motion question

  • 15ongm
  • · Replies 3 ·
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Point and circle on sphere probability

  • BedrockGeometry
  • · Replies 2 ·
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Struggling to Invent? Need Ideas for Your Physics Project?

  • equinox
  • · Replies 11 ·
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Final angular velocity of a merry-go-round?

  • nickr96
  • · Replies 4 ·
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Electric Fields: Oscillating point charge

  • abrianna
  • · Replies 3 ·
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Acceleration of a rod due to magnetic force

  • Ozmahn
  • · Replies 8 ·
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Potential energy of an electric dipole in electric field

  • Sleepycoaster
  • · Replies 2 ·
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Grade 11 Energy Transformation with External Forces

  • Wajeeha
  • · Replies 2 ·
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How Do You Calculate the Moon's Speed and Acceleration in Its Orbit?

  • Glenboro
  • · Replies 6 ·
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Retarded Green's Function for D'Alembertian

  • leonardthecow
  • · Replies 1 ·
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Collision question -- 2 balls colliding elastically

  • SteveS
  • · Replies 15 ·
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Calculate linear momentum of earth

  • **Mariam**
  • · Replies 3 ·
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How High and Fast Does a Bullet Travel When Shot Vertically?

  • Glenboro
  • · Replies 9 ·
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A disc in space will rotate or not?

  • mooncrater
  • · Replies 3 ·
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How Is Energy Calculated in a Capacitor?

  • Cal124
  • · Replies 5 ·
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Compressing ideal gas, show no heat exchange

  • Dazed&Confused
  • · Replies 19 ·
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Catching up to object moving away

  • Dazed&Confused
  • · Replies 8 ·
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Deceleration necessary to prevent a train collision

  • rezal
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Normal incidence on 2 dielectric boundaries

  • Robsta
  • · Replies 1 ·
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The greatest angle at which a ladder won't slip

  • Addem
  • · Replies 1 ·
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Calculating half power frequency/cutoff frequency

  • vishwesh
  • · Replies 7 ·
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Pendulum involving Spring and Rotating plank

  • kspabo
  • · Replies 1 ·
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Solving RC & RL Circuits Homework

  • Destroxia
  • · Replies 6 ·
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  • Poll Poll

A ball with some energy and yes a string

  • mooncrater
  • · Replies 19 ·
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Gravitational Force and Density on a Planet with a Digging Experiment

  • Raghav Gupta
  • · Replies 15 ·
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Compressed Spring Between Two Boxes

  • Soniteflash
  • · Replies 5 ·
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Tension on Rope, greater then, less than, or equal to

  • isaac206
  • · Replies 2 ·
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Circuits with two sources of Emf

  • Jimmy87
  • · Replies 11 ·
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"Diffraction: Why Bass Music is Easier to Hear

  • student07
  • · Replies 1 ·
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Solving the Mystery of Wavelength Refraction: A Thin 200nm Film of Oil

  • JJK1503
  • · Replies 2 ·
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Finding max speed and corresponding angle for a semi-circular path

  • Juke
  • · Replies 16 ·
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Solving Series RLC Circuit: Vrms Across Capacitor & Inductor is Zero

  • reddawg
  • · Replies 2 ·
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Angular Velocity Of A Sphere Rotating Under Gravity

  • Woolyabyss
  • · Replies 2 ·
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Derivation of self inductance formula in an LC circuit

  • PratyashAstro
  • · Replies 2 ·
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Angle of Deflection of Laser Given Tilted Mirror

  • Kumo
  • · Replies 10 ·
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Mechanics. Gravitation and gravity

  • moenste
  • · Replies 7 ·
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Special relativity and really fast trains

  • JJK1503
  • · Replies 2 ·
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Thermodynamic Query: Calculating Heat Transfer for Monoatomic Gas at S.T.P.

  • shrutiphysics
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Geometric Optics: Find Fish Apparent Position & Length in Fishtank

  • whatisreality
  • · Replies 6 ·
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Focal length of lens at border of two liquids

  • matej1408
  • · Replies 4 ·
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Conducting slidewire see system-Faraday's Law

  • Gemma95
  • · Replies 1 ·
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Electric potential, Can Someone Check This?

  • whitejac
  • · Replies 5 ·
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A ball is thrown upward direction , is it a -ve displacement

  • md abul hasan
  • · Replies 4 ·
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How to Derive the ABCD Matrix for a Transmission Line?

  • baby_1
  • · Replies 5 ·
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AH physics exam tomorrow - help with waves question? thanks

  • ah4p
  • · Replies 1 ·
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Looking For (Academic) References About How the LHC Works

  • ChaosLokoInc
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Finding speed of two electrons initially at rest

  • ozbii
  • · Replies 3 ·
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How much charge inside a Gaussian surface?

  • physicslove22
  • · Replies 10 ·
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+ charged sphere and - charged sphere touch and separate

  • Soniteflash
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Work Done line Integral question - Electrostatics - help please

  • smileandbehappy
  • · Replies 2 ·
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Why does charge on a pointy conductor not uniformly spread?

  • friendbobbiny
  • · Replies 1 ·
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Object sliding down a block on a scale

  • Lord Anoobis
  • · Replies 10 ·
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Dielectric Cylinder Polarization (Electrostatics)

  • roam
  • · Replies 4 ·
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Calculating Energy Released from Uranium Fission

  • nima rahmani
  • · Replies 3 ·
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Reason for the obvious movement of a block

  • mooncrater
  • · Replies 11 ·
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Mechanics. Circular motion and rotation

  • moenste
  • · Replies 12 ·
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Finding height of revolving body at speed ##\sqrt{2gR}##

  • AakashPandita
  • · Replies 24 ·
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Help with interference question AH physics? exam tomorrow :(

  • ah4p
  • · Replies 2 ·
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Oscillation of a mass connected to a spring displaced

  • vishwesh
  • · Replies 5 ·
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Bra-Ket Notation, Wave Equation, Particle States

  • squelch
  • · Replies 5 ·
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Static equilibrium - man on a ladder

  • aweeeezy
  • · Replies 6 ·
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Series vs. Parallel: Solving Capacitor Circuits

  • henry3369
  • · Replies 11 ·
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Interpreting Bernoulli Equation

  • cj
  • · Replies 1 ·
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Understanding Discharge: Where Does Capacitor Charge Go?

  • HeidiF
  • · Replies 3 ·
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Can You Help Review My Physics Assignments for Engineering College Prep?

  • physicslady
  • · Replies 2 ·
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The Bohr Radius and reduced mass

  • squelch
  • · Replies 11 ·
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The allowed radii and energies of positronium

  • squelch
  • · Replies 1 ·
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I'm trying to find electric potential.

  • +Jace090+
  • · Replies 12 ·
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