Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
How Does Surface Impact Affect Force on Falling Putty?
- fitchguy316
- · Replies 1 ·
Calculating Temperature Rise in 100m Waterfall: Heat Energy Questions
- shakejuhn
- · Replies 4 ·
Find the mass of the our galaxy
- richman614
- · Replies 2 ·
Debunking Your Friend: Why Their Answer to Astronaut Pen Question is Wrong
- richman614
- · Replies 4 ·
Theory of special relativity (conceptual problems)
- Jbum
- · Replies 4 ·
How Does Spring Compression Affect Mass Velocity on a Frictionless Table?
- pdubb
- · Replies 1 ·
Does restitution coefficient depends on kinetic energy?
- SciencePF
- · Replies 2 ·
Pratt vs Howe Truss Bridge Building: Deciding for Physics Class
- DefyPhysics
- · Replies 4 ·
Solve Elastic Collision Problem: Proton and Alpha Particle Kinetics
- richman614
- · Replies 2 ·
Static Friction, stuck on a problem
- Imperil
- · Replies 5 ·
Help with some Quantum physics please
- asdfTT123
- · Replies 2 ·
How to Derive the Inclination Angle of a Projected Particle?
- sara_87
- · Replies 2 ·
Need Help with Homework? Solve Two Physics Problems with Expert Guidance
- ukpclark
- · Replies 3 ·
Thermal physics problem on steel bar
- veemo
- · Replies 5 ·
Kinetic Friction, did I do this properly?
- Imperil
- · Replies 9 ·
Rotational Dynamics Practice Problems Help
- Lavitz
- · Replies 6 ·
What Are the Frictional Forces at Different Inclines for a 2kg Block?
- alanon
- · Replies 1 ·
How far behind the pinhole should you place the viewing screen?
- yo_man
- · Replies 5 ·
Elastic Collision of two blocks
- chiurox
- · Replies 1 ·
What kind of expansion is this?
- HydroVapor
- · Replies 1 ·
Find Lambda_2 for Double Slit Interference Pattern
- yo_man
- · Replies 3 ·
Understanding Simple Harmonic Motion: Equations and Parameters Explained
- lovelylila
- · Replies 1 ·
What Points Determine Maximum and Minimum Velocity in Spring Oscillations?
- AnnieD
- · Replies 3 ·
Kinematics / Acceleration Problem
- bakoo
- · Replies 3 ·
Where Does the Moon's Gravitational Pull Overtake Earth's?
- Andy111
- · Replies 3 ·
Solve Machines Problem: Ramp 18m Long & 4.5m High
- aquamarine08
- · Replies 4 ·
Top speed of vehicle on a curved road
- linnus
- · Replies 3 ·
Build Paper Bridge: Guidelines & Suggestions
- scoles
- · Replies 4 ·
Application of Electric, magnetic and gravitational field in satellite
- llJuanMall
- · Replies 1 ·
Find the time required to complete each cycle
- sun
- · Replies 3 ·
Thermodynamics & Thermal Energy
- dals2002
- · Replies 6 ·
Radioactive Dating with Potassium Argon
- Badger
- · Replies 2 ·
Gravitation and Orbiting Satellites
- ThenewKid
- · Replies 5 ·
Solving Collisions in 2 Dimensions
- Shadow_C316
- · Replies 3 ·
Calculating Critical Angle and Single Color Angle in Optical-Quality Glass
- mr.miagi
- · Replies 2 ·
Another friction and inclined plane question.
- anonymous820
- · Replies 8 ·
Answer Reversed Sign Letters: Reasons & Examples
- rhxoehwhfh
- · Replies 3 ·
What Is the Speed of an Object Released from a Spring?
- Sucks@Physics
- · Replies 11 ·
How Is Net Energy Transferred in a Cyclic Thermodynamic Process?
- sun
- · Replies 1 ·
The Carnot Icemaker heat question
- xinlan
- · Replies 4 ·
Angular momentum of a particle problem
- yuki_meiseki
- · Replies 1 ·
How Do the Forces Affect the Duck's Displacement in 3.0 Seconds?
- shortay524
- · Replies 2 ·
Calculating Combined Mass Motion of Two Cars
- linnus
- · Replies 3 ·
Angular momentum of three particles of the same mass
- jperk980
- · Replies 14 ·
PHYSICS. friction and the inclined plane. PLEASE HELP i dont understand =\
- anonymous820
- · Replies 13 ·
Stuck on Torque Question (W/ Picture)
- tachu101
- · Replies 13 ·
Average Force Formula - Solving for Force
- wyclefchick
- · Replies 6 ·
Momentum Problem on Motion sensor
- susie__
- · Replies 1 ·
How Does Potential Energy Influence Force and Motion in Physics Experiments?
- susie__
- · Replies 1 ·
Doubt from a beginner
- svigneshkumars
- · Replies 3 ·
Solving for Max Height & Side Lengths of Triangle Inclined at 24 Degrees
- tachu101
- · Replies 1 ·
Merry-go-round angular speed physics
- beocom6000yello
- · Replies 2 ·
How will a yo-yo on a horizontal table move when a force is applied at its edge?
- jaderberg
- · Replies 3 ·
Need help with projectile project please
- byershockey
- · Replies 4 ·
Projectile Motion: Angle & Distance of a Baseball Leaving a Bat at 50 m/s
- stevie_char99
- · Replies 1 ·
Newton's Laws of Motion PROBLEM
- stevie_char99
- · Replies 1 ·
How Does Electromagnetic Theory Explain Forces in a Moving Rod?
- Fenter
- · Replies 1 ·
Is Torque Equal on All Axes When a Rigid Body's Net Force Is Zero?
- miss photon
- · Replies 1 ·
How Do Astronauts Calculate Gravity on Planet X Using Standing Waves?
- momogiri
- · Replies 2 ·
Comparison of sound waves in air and underwater
- slakedlime
- · Replies 7 ·
Energy and momentum conservation
- domagoj412
- · Replies 3 ·
What happens to the water level in the container?
- biomajor009
- · Replies 1 ·
How Much Work Does It Take to Push a Sled Up a Snowy Hill?
- cmarte01
- · Replies 1 ·
Help with 4 Physics Problems at Room Temperature
- SharpTJ
- · Replies 10 ·
What is the lowest-frequency standing wave
- neoking77
- · Replies 2 ·
How Do You Determine Sound Intensity and Speed of an Enemy Submarine?
- biomajor009
- · Replies 1 ·
A very simple question about velocity and acceleration
- nowits
- · Replies 7 ·
Dynamics Question: Calculate Acceleration of Buckets
- Electron17
- · Replies 1 ·
How Does Water Pressure Affect a Submarine at Various Depths?
- biomajor009
- · Replies 1 ·
Why Does a Book on a Table Have Two Forces Acting on It?
- ksinelli
- · Replies 16 ·
Projectile Motion maximum height
- salman213
- · Replies 12 ·
Need help understanding entropy
- maos
- · Replies 1 ·
Troubleshooting Solving for m in the T=2*pi*sqrt(m/k) Equation
- Sucks@Physics
- · Replies 3 ·
What is the functionality of this Op-Amp circuit?
- bengaltiger14
- · Replies 6 ·
Conservation of Angular Momentum of Ball
- curly_ebhc
- · Replies 4 ·
Mastering Projectile Motion: Speed, Distance, and Calculations
- PhysicsHelpPlz
- · Replies 4 ·
Solve Voltage and Current Problem in DC Circuit
- slakedlime
- · Replies 25 ·
Tricky Tipping Problem; 11 sided figure
- tachu101
- · Replies 1 ·
Need Check On Orbital Satellite Problem
- tachu101
- · Replies 7 ·
Calculating Period and Speed of Atomic Vibrations | Atom Motion in Solids
- Sucks@Physics
- · Replies 4 ·
Spring Potential Energy Problem
- meganw
- · Replies 2 ·
How Do You Calculate the Oscillation Frequency of an Engine Block on a Cable?
- Rubidium
- · Replies 1 ·
Calculating Potential Energy of Buoyant Force: Understanding Density and Depth
- clipperdude21
- · Replies 5 ·
How can I calculate the centripetal acceleration in nonuniform circular motion?
- Gear300
- · Replies 3 ·
Solve for Intensity: Easy Formula Manipulation for Finding Intensity
- Sucks@Physics
- · Replies 6 ·
Help: Lawn Mowing Question Physics related
- NegaChin
- · Replies 3 ·
Two carts with masses of 8.0 kg and 1.8 kg, respectively, move on a friction
- lettertwelve
- · Replies 2 ·
What is the binding energy of positronium compared to hydrogen?
- drewhart
- · Replies 1 ·
AP Problem - Elastic Collision at an Angle
- meganw
- · Replies 6 ·
How Does Terminal Velocity Arise in Fluid Dynamics?
- Gear300
- · Replies 3 ·
Rotation of satellite in geosynchronous orbit
- ~christina~
- · Replies 19 ·
Density calculation for a cork (less dense than water)
- ~christina~
- · Replies 2 ·
Accelerated Motion Problem-easy but I NEED HELP on it
- physicsbhelp
- · Replies 5 ·
Gamma Spectroscopy: Measuring Atomic Numbers?
- indigojoker
- · Replies 13 ·
Conservation of Momentum and Dissipation of Kinetic Energy - AP Problem
- meganw
- · Replies 13 ·
Acceleration of Guns firing on Moon and Earth Problem-HELP
- physicsbhelp
- · Replies 1 ·
Finding Angular Acceleration in a Pulley System
- MissKaylaPaige
- · Replies 10 ·
Solve Beer Mug Throwing Speed for 2m - Energy Conservation
- domagoj412
- · Replies 6 ·
Static Equilibrium in Fluids: Pressure and Depth
- smichels
- · Replies 4 ·
How Is Torque Calculated in Rotational Motion Problems?
- odie5533
- · Replies 8 ·