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 Water Affect the Weight of a Submerged Aluminum Plate?
- autoguy
- · Replies 3 ·
Electric field from 24 charges on a circle in the y-z plane
- fatcat39
- · Replies 16 ·
Can You Determine the Volume or Mass of a Submerged Cube Using a Scale?
- nonequilibrium
- · Replies 12 ·
I don't understand why that is correct.
- rejz55
- · Replies 3 ·
Finding momentum of a ball halfway to maximum height
- mortho
- · Replies 17 ·
Find Field and Direction in Coaxial Coils
- Canuck269
- · Replies 2 ·
Static vs kinetic friction coefficients and surface roughness
- desichick07
- · Replies 1 ·
Acceleration of Block on an Apparatus
- mrlucky0
- · Replies 22 ·
What is the acceleration of a girl on a skateboard throwing a bowling ball?
- MoreZitiPlease
- · Replies 9 ·
Theoretical Question: Is W = PE?
- Goldenwind
- · Replies 2 ·
Conservation of Energy softball pitcher
- nickhassan38
- · Replies 3 ·
Momentum of a 0.14 kg ball of dough thrown up at 24 m/s
- mortho
- · Replies 3 ·
Calculating Force from Pole-Vaulter's Fall onto Foam-Rubber Pad
- mortho
- · Replies 3 ·
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 ·