Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Polarizing Filters Fraction of Light Passing Through
- Chase11
- · Replies 8 ·
Reducing Negative Heat Loss in the Lab: Qfinal vs. Qinitial
- nmsurobert
- · Replies 18 ·
Elastic Collision with objects of equal masses
- Zoidberg3001
- · Replies 7 ·
Image distance of light in parallel mirrors question
- salmayoussef
- · Replies 1 ·
Direction of magnetic field and physics principle?
- A123
- · Replies 2 ·
Terminal Velocity of a skydiver
- Shellina
- · Replies 1 ·
Task1: Vector Triangle: Calculate Resulting Speed
- supersander
- · Replies 1 ·
Altitude of Satellites above the Surface of the Earth
- Bassa
- · Replies 26 ·
Average speed question: forwards then backwards
- nobahar
- · Replies 4 ·
Car Accelerating Down Hill: Friction & Energy Homework
- logan3
- · Replies 4 ·
What Is the Minimum Hanging Mass Required to Keep a Block Stationary on a Wedge?
- derosef55
- · Replies 18 ·
Kinetic Energy and Displacement of a 2 piece system
- Tom2
- · Replies 18 ·
Calculate a vector potential of a simple loop
- skrat
- · Replies 1 ·
Centripital Force and Springs Combined
- Jennings
- · Replies 18 ·
Measuring the depth of a lake using a bottle
- lep11
- · Replies 2 ·
Electric field of a long round bar
- Karol
- · Replies 4 ·
Blocks, Collisions, and Friction
- minimario
- · Replies 1 ·
Maximum Jump Height of a 12-kg Dog: A Physics Problem
- Luhertz
- · Replies 2 ·
How Fast Can a Car Hit a Spring Bumper Without Damage?
- Smartgurl
- · Replies 4 ·
Finding the Dipole Moment of a Cylinder
- precise
- · Replies 1 ·
What Energy Is Needed to Reach the 3rd Excited State in an Infinite 1-D Well?
- mss90
- · Replies 3 ·
How Do Crash Dummies Help Us Understand Car Safety Physics?
- MissBisson
- · Replies 8 ·
Finding Spring Constant w/ Conservation of Energy
- logan3
- · Replies 1 ·
How long can x m/s^2 reach a certain point?
- Thegiver431
- · Replies 3 ·
Centripetal force involved with a pulley system
- Jimmy87
- · Replies 15 ·
Boiling Water Temp: Celsius vs. Fahrenheit
- Foehammer
- · Replies 3 ·
Electrostatic Self-Energy of a uniform charged sphere
- AwesomeTrains
- · Replies 9 ·
Find load to create equilibrium on a bar.
- ChemValleyOP
- · Replies 1 ·
Two beams hanging in equilibrium
- p0ps1c1e
- · Replies 4 ·
Centripetal Force on a banked road
- spartacus
- · Replies 28 ·
Potential Divider Equation (Rearranging)
- rindishy
- · Replies 3 ·
How Does a Laser's Resonant Cavity Create Multiple Wavelengths?
- Demroz
- · Replies 7 ·
The electric field on the axis of a charged disk
- Karol
- · Replies 22 ·
Car Coming to a Stop w/ Kinetic Energy and Friction
- logan3
- · Replies 1 ·
Kinetic to Elastic Potential Energy
- logan3
- · Replies 2 ·
Density, buoyancy, and volume in static fluids
- Notion
- · Replies 11 ·
Initial Velocity of Second Rail Car in Inelastic Collision
- Jay G.
- · Replies 1 ·
Friction problem -- 2 Blocks Sliding on a Surface
- rf1
- · Replies 6 ·
Construction Worker Lifting Uniform Beam
- Fetch
- · Replies 2 ·
Rotational motion- potential and kinetic energy
- oxymoron man
- · Replies 1 ·
Circular Motion -- Swinging keys on a string in a vertical circle
- dylanjames
- · Replies 6 ·
Average force between baseball and bat
- Rachelbot12
- · Replies 3 ·
Young's Double Slit Experiment refraction
- Prashasti
- · Replies 7 ·
Charge & Current in a Circuit: V, R, C, & t
- EROC
- · Replies 3 ·
Asteroid Orbits: Finding r with Kepler's Laws
- sya deela
- · Replies 3 ·
Using Moseley's Law to Calculate Kalpha2 for Lead with Z=82
- mss90
- · Replies 16 ·
Air Drag & No Drag on a Ball Projected Vertically
- AdityaDev
- · Replies 4 ·
Understanding the Role of Convex Lenses in Fraunhofer Diffraction
- Prashasti
- · Replies 4 ·
Planck's Constant and the size of the atom
- kirsten_2009
- · Replies 3 ·
How Fast Must a Ball Swing to Complete a Circle?
- james t
- · Replies 11 ·
What Is the Potential of the Combined Water Drop?
- Abel I Daniel
- · Replies 8 ·
Physics homework -- balancing a see-saw
- Julia Darko
- · Replies 8 ·
Conservation of linear, angular momentum and energy in a collision
- paalfis
- · Replies 1 ·
Impulse of person jumping on a force platform
- timnswede
- · Replies 15 ·
Solving Faraday's Law: Circular Loop with Resistance 0.380Ω
- reed2100
- · Replies 2 ·
Electron Diffraction: Calculate Crystal Plane Spacing
- throneoo
- · Replies 1 ·
Rope Through a Hole in a Frictionless Table
- sarthak sharma
- · Replies 20 ·
Conservation of energy, potential energy function
- blair chiasson
- · Replies 11 ·
I have a problem with variable forces
- blair chiasson
- · Replies 13 ·
Conservation of Energy Problem -- bullet fired into a ballistic pendulum
- logan3
- · Replies 7 ·
Resistance temperature coefficient
- cycrups
- · Replies 24 ·
Relative distances (motion problem) --
- christian0710
- · Replies 2 ·
Optics Lab: Combined Lens Systems
- NotMad
- · Replies 3 ·
Calculating Emitted Photon Properties for Excited Atoms | Homework Help
- oldspice1212
- · Replies 10 ·
Understanding Angular Velocity and Torque: Solving for Final Angular Velocity
- DrowningKthnx
- · Replies 5 ·
Solving Circuits: A Nodal Analysis Approach
- _N3WTON_
- · Replies 18 ·
Block attached to spring on slope
- ethan123
- · Replies 3 ·
Coupled Oscillator: Solve 4.35 Homework
- NATURE.M
- · Replies 1 ·
Force required to keep arm in position
- DrowningKthnx
- · Replies 5 ·
How do you calculate energy levels and transition frequencies in Bohr's model?
- peripatein
- · Replies 1 ·
Graphical method to calculate power
- Nicaragua
- · Replies 1 ·
Statics Friction problem -- A 500lb box is being pushed up a ramp
- nmelott
- · Replies 2 ·
Energy transition (bohrs model)
- mss90
- · Replies 1 ·
How Does Charge Distribution Affect Electric Field Calculations?
- chongkuan123
- · Replies 5 ·
Understanding the Equation of Motion for Simple Harmonic Motion
- ZARATHUSTRA
- · Replies 7 ·
Help with coupled spring and pendulum system
- J.Sterling47
- · Replies 3 ·
Simplify the expression -- Electric field in a capacitor
- skrat
- · Replies 4 ·
Pulley problem: Does the third pulley move up or down?
- 21joanna12
- · Replies 1 ·
Discovering the Rotation of a Hot Bulb: Michelson Morley and the Solar System
- mmaciej
- · Replies 1 ·
Particle Entanglement and the Rarity-Tapster Experiment
- kirsten_2009
- · Replies 4 ·
Photoelectric effect formula question
- mss90
- · Replies 7 ·
Finding the mass of iron using the heat equations
- math989
- · Replies 3 ·
Are These Photon Wavelength and Linear Momentum Calculations Correct?
- mss90
- · Replies 3 ·
Interference of Sound Waves in a Circular Tube
- JeanDucreaux
- · Replies 3 ·
Projectile Motion: Method of finding initial velocity in a lab
- Yme
- · Replies 1 ·
How Can You Throw a Baseball into Orbit from the Top of Mt. Chimborazo?
- Wolfmannm
- · Replies 9 ·
How Do You Calculate IV Drip Rates for Medications?
- acehansen
- · Replies 2 ·
Calculating Tarzan's Max Swing Speed
- Quantum Fizzics
- · Replies 1 ·
Calculate the moment of inertia for the system
- DeerOnTheRocks
- · Replies 1 ·
Finding potential U from sum of forces F
- Geranimo
- · Replies 1 ·
Direction of Current between nodes
- cavalieregi
- · Replies 7 ·
How Far Does Dave Johnson's Center of Mass Move Up During the High Jump?
- Gingerclaire_
- · Replies 12 ·
Oil Drop Electric Field Problem
- yasemonkey
- · Replies 4 ·
Pressure Volume graph finding total mole of gas
- cycrups
- · Replies 6 ·
Rotating Bar in uniform B Field
- Bluestribute
- · Replies 16 ·
Spring and weight, acceleration
- rlc
- · Replies 13 ·
Application of one dimensional force - Dynamics
- Paul W.
- · Replies 2 ·
Archived The Interdisciplinary Nature of Teaching Chemistry and Physics
- ezfzx
- · Replies 6 ·
How Does Friction Affect Acceleration in a Pushed Box?
- PiRho31416
- · Replies 2 ·
Calculating Time and Distance for a Tram with Sinusoidal Velocity
- ashclouded
- · Replies 5 ·