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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Pulley Problem: Keeping boxes stationary on another box
- Jazz
- · Replies 26 ·
Volume of a bubble rising in a lake
- Nathanael
- · Replies 5 ·
Force on a circular loop due to hypothetical magnetic field.
- Hijaz Aslam
- · Replies 8 ·
Finding resistance of cylinders with variable conductivity
- ELB27
- · Replies 25 ·
Decays possible? Parity conservation, bosons, fermions
- binbagsss
- · Replies 3 ·
Calculating Stress & Strain in Compressive Force on Component
- stackemup
- · Replies 21 ·
Moving object on a moving slope
- mudkipzs
- · Replies 7 ·
Can the Lorentz force explain the following phenomenon?
- Coffee_
- · Replies 7 ·
Calculating Momentum of a 50g Bullet: Need Help?
- Recce
- · Replies 10 ·
Direction of car friction in a free-body
- SkyrimKhajiit
- · Replies 2 ·
Rotation of two motors and two disk with friction
- Cri85
- · Replies 4 ·
Conceptual Newton's Law's Questions - HS Freshman Physics
- SkyrimKhajiit
- · Replies 2 ·
How Is the Potential Energy of a Dipole Derived in Different Contexts?
- ELB27
- · Replies 9 ·
How Does Closing a Switch Affect RC Circuit Components?
- LongApple
- · Replies 2 ·
Thermodynamics - Stirling Engine
- Feodalherren
- · Replies 10 ·
Sending a Manned Expedition to Mars: Calculating Rocket Work Needed
- Europa
- · Replies 14 ·
Special Relativity: Trip to Andromeda by rocket
- QuantumCurt
- · Replies 16 ·
How Do Induced Electric Fields Relate to Gauss' and Lenz's Laws?
- lighhhtworks
- · Replies 1 ·
Problem on a liquid drop free fall
- Abhisek Roy
- · Replies 6 ·
Free fall down (Chord) Tunnel through Earth
- Agrasin
- · Replies 1 ·
Max Acceleration for Truck w/Crate & CoFriction
- rmalski
- · Replies 5 ·
Calculating Magnetic Field in a Square with Varying Resistances
- arpon
- · Replies 4 ·
Elastic Collision between ball and pivoted rod
- erisedk
- · Replies 1 ·
Conservation of Energy, Car Driving with Drag Force
- David Mordigal
- · Replies 4 ·
Two long wires carrying current
- scrubber
- · Replies 2 ·
Angular Momentum: Inelastic Collision of Disk-Ball System
- maxhersch
- · Replies 2 ·
Can an Object Have Acceleration at Zero Velocity?
- Diego Fernandez
- · Replies 4 ·
Moving cylinder with gas and piston
- Rugile
- · Replies 17 ·
What Is the Longer Wavelength in a Diffraction Grating Experiment?
- nomorenomore
- · Replies 3 ·
Iron and Ice in Aluminum bucket of water
- LiorSh
- · Replies 14 ·
Weight of 2 Blocks on an Incline
- Sean Smith
- · Replies 4 ·
Radiation pressure from light source
- AdityaDev
- · Replies 10 ·
Partial pressure of water vapor
- Karol
- · Replies 13 ·
Charged particles moved into a B-field
- scrubber
- · Replies 1 ·
What Are the Velocities After a Partially Inelastic Collision?
- garr6120
- · Replies 8 ·
Physics homework -- guy runs 28.5m in 11.5s,
- daniel20152015
- · Replies 2 ·
Force exerted by M1 on M2 problem
- JSmithDawg
- · Replies 3 ·
Calculating Power of a Solar Panel
- eehelp
- · Replies 3 ·
Interference in Thin Films: Determining SiO2 Layer Thickness Using a Wedge Setup
- nomorenomore
- · Replies 11 ·
Resistance doesn't depend on current
- Karol
- · Replies 3 ·
Capacitance, t=0 and t=infinity
- nomorenomore
- · Replies 1 ·
The rotationnal velocity on a support
- Cri85
- · Replies 18 ·
How is the error in the gradient calculated?
- SalfordPhysics
- · Replies 5 ·
How Does Ladder Stability Change with Different Forces and Distances?
- Jazz
- · Replies 12 ·
Strange constant, rolling cylinders.
- BruceSpringste
- · Replies 1 ·
Thank You to My Academic Helpers - Grades A in Physics & A- in Chemistry
- toothpaste666
- · Replies 5 ·
How Long Until a Dropped Ball Hits 25 m/s?
- Divna
- · Replies 1 ·
Solving an Equation: x = vo t + ½ a t2
- Arun Raja
- · Replies 5 ·
2 questions regarding circular motion and Newton's 1st Law
- tomo
- · Replies 10 ·
Vector Addition/Components Problem
- Sora03
- · Replies 4 ·
Charge induced on capacitor plates
- Hijaz Aslam
- · Replies 3 ·
How to Use Buckingham's PI-Theorem for Rolling Cylinders?
- BruceSpringste
- · Replies 10 ·
How does a current balance work?
- Tangeton
- · Replies 2 ·
Potential Divider: R(R+r)*E=V - Wrong Ans Explained
- Arun Raja
- · Replies 1 ·
What are the formulas in this physics document and how can they be decoded?
- kevinyuen
- · Replies 2 ·
Capacitors with dielectric in series
- cseil
- · Replies 10 ·
Compass needle, magnetic field and current
- BadatPhysicsguy
- · Replies 8 ·
Finding work given mass and mew?
- m4ya
- · Replies 14 ·
Problem understanding simple constant acceeleration problem
- mkaa11
- · Replies 8 ·
Coeffecient of train and the tracks?
- Thegiver431
- · Replies 3 ·
Find Mass and Speed given Tension and Angle
- geek96boolea10
- · Replies 2 ·
Basic forces problem: which has a higher acceleration?
- JSmithDawg
- · Replies 3 ·
Satllite Crashing into the Moon
- aldofbg
- · Replies 2 ·
Are Kinetic and Potential Energy Densities Equal in Stationary Waves?
- bananabandana
- · Replies 3 ·
What Force Does Block B Exert on Block A?
- Thegiver431
- · Replies 1 ·
Time for Revolution (Rotating about the Center of Mass)
- Redfire66
- · Replies 4 ·
Object on horizontal surface practice question please?
- GiantSheeps
- · Replies 2 ·
Relativity with energy and momentum question
- StonedPhysicist
- · Replies 4 ·
Magnetic Reductor: Questions & Answers
- Cri85
- · Replies 4 ·
Proving an ellipse fits Kepler's 1st law
- stephen cripps
- · Replies 1 ·
Energy Required to Launch a Geosynchronous Satellite
- Striders
- · Replies 12 ·
Optics Homework: Converging Lens and Varying Refractive Index
- AdityaDev
- · Replies 3 ·
What is the average force required to pull the rope?
- geoffrey159
- · Replies 36 ·
Magnification of a fish in a spherical bowl due to water
- amind
- · Replies 6 ·
How Does Friction Affect Acceleration and Motion?
- William Donald
- · Replies 1 ·
How Do You Calculate the Movement of a Push Lawn Mower?
- drunkencharms
- · Replies 3 ·
Is the Frictional Force on a Sloped Block Greater Than Its Weight?
- 1Deag4Days
- · Replies 3 ·
Potential difference between a tube and a coaxial bar
- Karol
- · Replies 27 ·
How Are Cathode Rays Deflected by Current-Carrying Wires?
- randomstu1997
- · Replies 6 ·
Simple Rocket Equation in Gravity
- Dextrine
- · Replies 2 ·
Artificial Magnetic Fields — Electromagnetism (Physics Gr12)
- randomstu1997
- · Replies 4 ·
How Do You Calculate the Range of a Projectile on a Sloped Surface?
- HMPARTICLE
- · Replies 5 ·
Help! Physics Problem: Find Theta for 1000m Target
- Feeb
- · Replies 8 ·
Conservation of linear Momentum Theory
- Speedking96
- · Replies 1 ·
Calculate speed (work and energy)
- Physicsrapper
- · Replies 2 ·
Reaction Force: A Comparison of Masses
- Redfire66
- · Replies 2 ·
3 gears and the torque on the support
- Cri85
- · Replies 20 ·
Can Epicyclic Gearing Operate with No Fixed Axis?
- Cri85
- · Replies 3 ·
What Is the Car's Speed After Exiting the Mud Patch?
- alison16
- · Replies 3 ·
Calculating Induced Voltage in a Flying Airplane through Earth's Magnetic Field
- BadatPhysicsguy
- · Replies 1 ·
Three conductors, how is the middle one affected
- BadatPhysicsguy
- · Replies 1 ·
Why Does Cyclotron Frequency Depend Only on Magnetic Field Strength?
- Davidmb19
- · Replies 6 ·
How does rotational motion contribute to an object's total kinetic energy?
- kaspis245
- · Replies 3 ·
Rotational motion -- Energy stored in a flywheel
- kaspis245
- · Replies 6 ·
Particle through magnetic field
- BadatPhysicsguy
- · Replies 3 ·
Finding Angle of Sphere Falling From Table Edge
- Satvik Pandey
- · Replies 139 ·
Finding horizontal force using mass and static friction?
- Infinite324
- · Replies 10 ·
Electron and proton between two plates
- cseil
- · Replies 5 ·
Discharging a charged capacitor to another neutral capacitor
- Hijaz Aslam
- · Replies 6 ·
Work and Energy Problem. Why not include PE?
- Naomi
- · Replies 8 ·