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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Interpreting Distance-vs-Time and Accel-vs-Time Graphs
- rejz55
- · Replies 4 ·
How Do Forces and Motion Affect a Baseball When Hit by a Bat?
- MoreZitiPlease
- · Replies 1 ·
What is the constant force exerted on a ball by a wall during a collision?
- mortho
- · Replies 4 ·
Calculating Final Velocity with Constant Force
- mortho
- · Replies 6 ·
Struggling With Physics: Units of Periods Needed
- altec121
- · Replies 2 ·
What is the equation for finding the velocities of colliding masses?
- Joza
- · Replies 4 ·
Static friction question with no mass
- kirstynl
- · Replies 2 ·
Radioactive reactions -half-life Decay physics 30
- cathoderay
- · Replies 3 ·
How Does a TV Use Electric Fields to Control Electron Beams?
- krosenberg
- · Replies 1 ·
Calculating Fire Distance with Friction and Mass
- PPMC
- · Replies 3 ·
Finding Critical Angle: A Freshwater Pond Problem
- Liger20
- · Replies 2 ·
How Many Turns are on the Secondary Coil of a 240V to 15V Transformer?
- johnabruzzi
- · Replies 2 ·
Does the Rocket Equation Accurately Describe Net Force?
- cashman91
- · Replies 13 ·
Velocity Problem Regarding a Car Overtaking a Truck
- aguila
- · Replies 2 ·
What is the Impulse Delivered by an Elevator to a Moving Package?
- teenidle
- · Replies 2 ·
Calculating Friction Coefficient with 40 N Force and 5 kg Box
- kirstynl
- · Replies 4 ·
Adding Vectors and Calculating Resultant Force
- rejz55
- · Replies 6 ·
Relationship between Pressure of Gas and Mechanical Work
- PPMC
- · Replies 16 ·
Desperatly , have no idea where to start
- pacostames101
- · Replies 6 ·
Electrostatic Potential in Electric Fields
- krosenberg
- · Replies 7 ·
Conductors and Equipotential Lines - Fun
- fatcat39
- · Replies 4 ·
How Do Physics Principles Enhance Football Helmet Safety?
- qotsa17
- · Replies 6 ·
What Simple Calculus Question Can Drive a 4000-Word Exploration?
- PPMC
- · Replies 7 ·
Determining coefficient of friction
- quasar7744
- · Replies 7 ·
Calculating Acceleration of Helium Balloon
- cammarata123
- · Replies 11 ·
What is the tension in the line holding a helium-filled balloon?
- clutchstrike
- · Replies 7 ·
Force acting on wedge and block
- Joza
- · Replies 1 ·
How Does Elevator Motion Affect Pendulum Period?
- sheepy
- · Replies 3 ·
Is the Calculated Tension in the Upper String Correct for a Stationary Ball?
- Joza
- · Replies 18 ·
Projectile angle and height for long-distance flight across Earth's curvature
- sadhu
- · Replies 6 ·
Tension in a rope with a bag hanging in the middle
- mrlucky0
- · Replies 2 ·
Solve Uncertainty of Pi: Volume of Cylinder
- rejz55
- · Replies 5 ·
How Does Impulse Affect the Velocity of a Block?
- teenidle
- · Replies 1 ·
How Can We Accurately Determine the Number of Small Marbles in Each Bag?
- nothing123
- · Replies 6 ·
Calculating Temperature & Heat Transfer with a Piece of Metal
- always_smile
- · Replies 1 ·
Calculating Proton Speed in an Accelerator and Repulsive Force at 8 x 10^-14 m
- cathoderay
- · Replies 2 ·
How Is Torque Calculated for a Bucket on a Cylinder?
- BunsenBurner1
- · Replies 3 ·
Baseball Problem: Does a Ball Hit the Roof? Answer Here!
- jfeelz33
- · Replies 1 ·
Minimum tension in rope holding a 20 kg package on a 60° slope
- CathyLou
- · Replies 14 ·
Will a stone reach the Moon faster than Earth's escape speed?
- Icetray
- · Replies 32 ·
Spring Elastic Potential Energy
- Icetray
- · Replies 10 ·
How Does Acceleration Affect Motion on an Inclined Wedge?
- Fermat
- · Replies 5 ·
Equilibrium of Cylinder with two liquids at either side
- ron_jay
- · Replies 1 ·
Mercury tube tilted at 60° with air columns at different pressures
- metalInferno
- · Replies 12 ·
How Should the Radius Change for Higher Speeds on Banked Circular Ramps?
- watsup91749
- · Replies 3 ·
Calculate the velocity of the boat
- MIA6
- · Replies 5 ·
Solving Distance Problem: Firework Explosion
- quasar7744
- · Replies 6 ·
Why does sound travel faster in warm air?
- Crazyevox
- · Replies 2 ·
What is the rate at which mechanical energy is dissipated?
- Rubidium
- · Replies 3 ·
Finding force, acceleration, work and momentum for a particle
- atotheizzl09
- · Replies 1 ·
Frictionless Roller Coaster Problem
- danrochester
- · Replies 6 ·
How Do Charges Distribute in Series-Connected Capacitors?
- i_island0
- · Replies 55 ·
Independent research - paintball
- trigiani
- · Replies 3 ·
Girl on skateboard: boy jumps on, find final speed
- niki4d
- · Replies 6 ·
Seriously? Moment of Force about a specified Axis
- Saladsamurai
- · Replies 4 ·
How Do Kirchhoff's Laws Determine Currents in Electrical Circuits?
- rock.freak667
- · Replies 3 ·
AP Physics problem help needed
- atotheizzl09
- · Replies 3 ·
AP physics problem from College Board exam
- atotheizzl09
- · Replies 1 ·
How quickly will a can sink in water with a small hole at the bottom?
- i_island0
- · Replies 3 ·
Do You Understand Buoyant Forces in Water?
- dtcool2003
- · Replies 11 ·
Relating Time and Temperature Change in a Closed System with Constant Volume
- Rubidium
- · Replies 3 ·
Energy needed for pluto to escape earth surface
- jperk980
- · Replies 6 ·
Electric field around point charge in spherical conductor using Gauss's law
- AdiV
- · Replies 12 ·
Trouble with signs and the right-hand rule for moments in statics
- Saladsamurai
- · Replies 17 ·
Law of gravitation and net gravitational force
- jperk980
- · Replies 15 ·
X-ray Compton scattering and photoelectric effect problem
- cathoderay
- · Replies 2 ·
How Do You Calculate the Final Kinetic Energy of a Jet-Powered Train?
- eagles_reciever
- · Replies 6 ·
Calculating Force Generated by Gas Powered Launcher
- Quaboble
- · Replies 8 ·
Use conservation of energy, find out velocity, then find distance?
- MIA6
- · Replies 3 ·
Angle to Drop a Package from Airplane
- mrlucky0
- · Replies 2 ·
Calculating acoustic impedance and reflection coefficient
- DEWANA
- · Replies 6 ·
Magnetic force on current-carrying wire experiment results and analysis
- jdiamonddiva
- · Replies 20 ·
Having a hard time with visual of FBD
- Saladsamurai
- · Replies 13 ·
How to Calculate Torque in a Hydraulic Brake System
- sun
- · Replies 3 ·
Calculating Acceleration of a Spherical Shell
- nurjamali
- · Replies 2 ·
Law of Conservation of Mechanical Energy
- WiFO215
- · Replies 3 ·
Problem involving Newton's Law of Gravitation
- collide
- · Replies 6 ·
Why can atoms produce a continuous absorption spectrum?
- Oerg
- · Replies 6 ·
How Far Did the Basketball Player Shoot from the Basket?
- mcbulldog
- · Replies 4 ·
What is the solution for the damped free vibration of a string?
- neelakash
- · Replies 6 ·
How Is Work Calculated When Pulling a Wagon?
- danrochester
- · Replies 4 ·
Given: coefficient kinetic and coefficient static frictions
- Edwardo_Elric
- · Replies 2 ·
Work done by friction when a bullet embeds in a wooden block
- rajkirann
- · Replies 2 ·
Sticky Collision with Clay Ball and Rod
- Squashy
- · Replies 3 ·
Why Do Accelerations Differ in These Atwood Machine Configurations?
- ron_jay
- · Replies 7 ·
Solving FBD with No Angle Given
- Saladsamurai
- · Replies 14 ·
Restoring force and SHM for a ball between two rubber bands
- GreenLantern674
- · Replies 11 ·
If you've already taken the AP Physics C Examination
- Gear300
- · Replies 1 ·
Minimum Force to Prevent Slipping Down Plane
- cryptoguy
- · Replies 4 ·
Coulomb's Law Question with Charges on x-axis
- Sabellic
- · Replies 2 ·
What is the torque on a crate being carried up stairs at an angle?
- Niles
- · Replies 15 ·
Calculating Average Acceleration and Force of Dragster and Driver
- rr92890
- · Replies 7 ·
Checking my capacitor solution
- i_island0
- · Replies 10 ·
Help with modeling problems from homework attachment
- magicuniverse
- · Replies 4 ·
Calculating the final velocity of a compressed-air launched projectile
- swbluto
- · Replies 4 ·
Can plastic allow me to see magnetic fields and where can I find it?
- KLE xy
- · Replies 3 ·
Finding projected force along line
- Saladsamurai
- · Replies 15 ·
What is the controversy- current and resistance
- i_island0
- · Replies 11 ·
Average acceleration of Suzie stopping with roller blades
- rr92890
- · Replies 5 ·
Distance To Center of Earthquake?
- mrlucky0
- · Replies 2 ·