Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Finding g with a Compound/Physical Pendulum: Plotting and Calculating
- Pete2008
- · Replies 5 ·
Power particle-like object problem
- critch
- · Replies 1 ·
What is the Unknown Distance in a Lens Equation Problem?
- petern
- · Replies 2 ·
What is the x-component of the electric field at the origin?
- n77ler
- · Replies 2 ·
How Is Current Calculated in a Circuit with Charge Function q(t)?
- JFonseka
- · Replies 1 ·
What is the tension of the string in terms of given variables and g?
- Shotty
- · Replies 1 ·
Fundamental Frequency and Pipe Length Calculation for Open Pipes
- jhayes25
- · Replies 3 ·
Wave Interference QUICK PROBLEM
- clipperdude21
- · Replies 2 ·
Simple current and charge circuit question
- JFonseka
- · Replies 3 ·
Pendulum period and 24-hour clock loss with changed gravitational acceleration
- jdeakons
- · Replies 4 ·
Solving the "Rainy Problem": Who Gets Wetter?
- puneeth
- · Replies 5 ·
How can you calculate the internal resistance from circuit data?
- Joshybosh
- · Replies 1 ·
Solving Sinusoidal Equations: Ferris Wheel Example
- torrobinson
- · Replies 2 ·
Electromagnetic Induction and Induced Voltage
- Aphrael
- · Replies 1 ·
General physics question (position,velocity and acceleration)
- s4116792
- · Replies 2 ·
Simple Curcuit Question (Theory)
- skwz
- · Replies 6 ·
How Do You Derive the Linear Wave Equation from Basic Physics Principles?
- ~christina~
- · Replies 16 ·
Helium balloon and simple harmonic motion
- ~christina~
- · Replies 8 ·
Specify the minimum block mass needed to safely secure the rope
- danago
- · Replies 3 ·
Compute the charge on the capacitor
- fubag
- · Replies 5 ·
Refraction of light in three mediums
- arnavchhabra
- · Replies 2 ·
Conservation of Momentum problem-don't understand the solution
- skier07
- · Replies 1 ·
Concave Mirror Lens Ray Diagram
- petern
- · Replies 2 ·
How can a surface be polished for some waves and not others?
- zachcumer
- · Replies 2 ·
E, FDAC Solving E-Field with Charges
- n77ler
- · Replies 11 ·
Static Equlibrium involving a weird object
- XxBollWeevilx
- · Replies 13 ·
Motional EMF with antenna moving at angle to magnetic field
- DSUND34
- · Replies 1 ·
Are Unit Conversions Necessary for Calculating Momentum in Inelastic Collisions?
- frasifrasi
- · Replies 4 ·
Equation for solar luminosity from Earth's received energy
- bse
- · Replies 2 ·
Solving Beam Hinge Torque for Horizontal Force
- NAkid
- · Replies 2 ·
Rotational Motion + Tension Problem
- the7joker7
- · Replies 10 ·
Solving for Tensions and Mass in a System of Forces
- c-murda
- · Replies 9 ·
Solving an Elastic Collision Problem with Given Force-Time Data
- the7joker7
- · Replies 3 ·
Diffusion equation question in 1D?
- magicuniverse
- · Replies 5 ·
Need help with dependent motion problems for quiz tomorrow
- kring_c14
- · Replies 1 ·
Momentum. resulting velocity. Rocket
- rtamplain
- · Replies 3 ·
Block- spring- bullet- harmonic motion
- ~christina~
- · Replies 13 ·
Electric field due to a uniformly charged line of length 2L
- djghs
- · Replies 3 ·
Moment Of Inertia Problem using Algebra
- jaychouf4n
- · Replies 13 ·
Calculate Rear Builder Weight Carrying Torque Up a Ramp
- physicsgrouch
- · Replies 7 ·
How Does Current Affect Magnetic Field at the Center of Two Wires?
- ttiger2k7
- · Replies 2 ·
Angle of hanging ball versus system acceleration
- Aerodin
- · Replies 5 ·
Deriving the head-on collision equation in terms of v2' and v1'
- louise82
- · Replies 7 ·
Light - Angle of Deviation and Lenses
- sinners
- · Replies 6 ·
Finding the center of mass of the Pluto-Charon system
- rsala
- · Replies 1 ·
Thick as a planck and making a spectra of myself
- redbaldyhead
- · Replies 10 ·
Questions on Conservation of Enery
- xxnicky
- · Replies 4 ·
Topics for physics presentations.
- Amb1ence
- · Replies 5 ·
Solve Implus and Momentum for Block A Velocity at t=1
- PaintballerCA
- · Replies 6 ·
Kirchoff's Laws: Solving Simultaneous Equations for Circuit Analysis
- Knissp
- · Replies 3 ·
How Much Sand Is Needed to Balance a Plank Horizontally?
- iwonde
- · Replies 1 ·
How Do You Calculate the Impact of a Cannonball on a Moving Car?
- jtspenfield
- · Replies 1 ·
Finding angular speed of a thin rod.
- Seraph404
- · Replies 6 ·
How Do You Calculate Magnetic Field Strength at Different Points?
- BuBbLeS01
- · Replies 10 ·
What Is the Average Force Exerted by the Floor on a Jumping Lizard?
- Kris1214
- · Replies 12 ·
200kg Astronaut, 2.0 m/s, 100.0 N rocket ?
- jacksonjw81
- · Replies 5 ·
How Do You Calculate Support Forces for a Diving Board?
- Ashford
- · Replies 1 ·
Calculating Invariant Mass Using Momentum and Rest Mass
- iloveflickr
- · Replies 8 ·
How High Will the Ball Bounce After Losing Energy on Impact?
- greyradio
- · Replies 4 ·
Calculating Electron Energy in a One-Dimensional Potential Well
- delrepublica
- · Replies 4 ·
Magnitude of electric field using point charges
- n77ler
- · Replies 13 ·
Solving for Potential Difference in a Circuit Using Kirchoff's Rule
- fubag
- · Replies 2 ·
Differential equation: projectiles
- mattgad
- · Replies 1 ·
Gauss's Law and the electric field
- Th3Proj3ct
- · Replies 3 ·
Magnetic Field at the Center of a Wire Loop
- cse63146
- · Replies 10 ·
What is the electric potential at the center of a ring of charge?
- Necraz
- · Replies 4 ·
Calculating Field Direction and Magnitude for Levitating Copper Wire
- g.gnunu
- · Replies 5 ·
Why does an open switch stop a circuit?
- Gear300
- · Replies 8 ·
Two nonconducting spheres problem
- n77ler
- · Replies 5 ·
Finding wave equation and tension on a wire with given amplitude and frequency
- ~christina~
- · Replies 7 ·
What is the period for an oscillator with a net force of fx = -cx^3?
- TFM
- · Replies 25 ·
Light inextensible string problem
- mattgad
- · Replies 7 ·
Orbital speed of a golf ball at Mars surface
- kirste
- · Replies 6 ·
Kinetic energy of Earth's rotation and orbital motion
- colton4286
- · Replies 2 ·
English Eng. Gas Constant: 8.314 J/mol-K
- Altairs
- · Replies 1 ·
Finding the Center of Mass for a Uniform Plate
- AnkhUNC
- · Replies 2 ·
How Does Internal Energy Change at Constant Temperature?
- mike115
- · Replies 5 ·
Angular Momentum of a flywheel problem
- Seraph404
- · Replies 6 ·
Why Is Displacement Only 4.9m After 1 Second in Free Fall?
- mirza21
- · Replies 1 ·
Rolling ball distance Math problem
- i_need_help
- · Replies 5 ·
Ball rolling down an inclined plane
- i_need_help
- · Replies 1 ·
How Do Permissible Loads Relate to Bending and Shear Stresses?
- t_n_p
- · Replies 1 ·
Do the electron and proton have equal kinetic energy when they attract together?
- soul5
- · Replies 1 ·
RC circuit analysis using phasors
- VinnyCee
- · Replies 2 ·
Projectile Motion Sail Boat Problem: Finding Speed and Direction After a Gust
- Kster
- · Replies 3 ·
Roller coaster free body diagrams
- souljaxd
- · Replies 1 ·
A Question Related to Electrostatic Energy and Capacitors
- Air_Gear
- · Replies 3 ·
Where Should a Third Charge Be Placed to Experience No Net Force?
- n77ler
- · Replies 16 ·
How Do You Calculate Fnet, F2, and Direction of dp/dt in Physics?
- meanswing
- · Replies 2 ·
Challenging physics question, hooke's law and conservation of energy
- itunescape
- · Replies 1 ·
Bullet embeds in wood block on frictionless incline, rises 1.25m
- am08
- · Replies 10 ·
Calculating Work Done by Ideal Gas: Qualitative Pressure vs Volume
- kawafis44
- · Replies 1 ·
Simple Harmonic Motion and maximum velocity
- kiro626
- · Replies 7 ·
Calculating Speed and Direction of Sailboat After Gust of Wind
- Kster
- · Replies 1 ·
Confusion in special relativity - total newbie
- iamaelephant
- · Replies 1 ·
How to approach a 2D elastic collision problem with 4 unknowns
- radagast_
- · Replies 21 ·
How to Find Kinetic Energy and Speed of a Particle in a Hemispherical Bowl?
- sailsinthesun
- · Replies 2 ·
Why do the electric field directions of opposite charges align in the middle?
- phy77
- · Replies 2 ·
Where Should the Third Particle Be Placed for Desired Center of Mass?
- AnkhUNC
- · Replies 10 ·
Inelastic Collision and Pendulums
- seichan
- · Replies 2 ·