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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Balls exerting gravitational force on eachother
- Axl Rose
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What is the Kinetic and Internal Energy of a Car-Truck Collision?
- gmagnus
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Can an exercise bike be used to generate heat for a room?
- Unassuming
- · Replies 7 ·
Why does angular momentum stay constant as plane moves past farmer?
- FisherDude
- · Replies 3 ·
How can I calculate the compression of a support column under a heavier weight?
- kkmonte
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What is the maximum compression of the spring
- ja2ha
- · Replies 4 ·
What is the Apparent Weight of an Astronaut Running in a Centrifugal Spaceship?
- wolf party
- · Replies 10 ·
Calculating A-hrs: Understanding a Car Battery's Performance and Efficiency
- nckaytee
- · Replies 4 ·
Theory of special relativity -clocks and objects
- ally1h
- · Replies 1 ·
How Fast Does the Elevator Cable Perform Work?
- needhelp1234
- · Replies 1 ·
How to Find the Tension in a Three-Pulley System?
- Phan
- · Replies 19 ·
How Much Water Flows Through a 1cm Hole in a Minute?
- alibaba2
- · Replies 1 ·
Inclined plane and elapsed time
- Sassenav22
- · Replies 10 ·
Forces in Equilibrium-Tension Forces at Different Angles
- 312213
- · Replies 9 ·
Why Is Achieving Orbit Considered Halfway to Anywhere?
- dswatson
- · Replies 1 ·
How Much Power Does the Elevator Cable Exert in kW?
- needhelp1234
- · Replies 1 ·
How to Calculate Average Force from Momentum Change in a Collision
- Maiia
- · Replies 3 ·
Solving Questions on Throwing a Baseball to Hit a Target
- Sassenav22
- · Replies 5 ·
A disk with a Spring around it
- lebprince
- · Replies 12 ·
Short, Easy, Lenz's Law Question
- Sheneron
- · Replies 5 ·
Block on incline with vertical force
- robvba
- · Replies 10 ·
How Do Newton's Laws Apply to a System of Hanging Masses?
- cartoonorange
- · Replies 1 ·
Why does f3(3.8)-mg(2.15)=0 for torque in ladder problem?
- BifSlamkovich
- · Replies 1 ·
Calculating Tension in a Rope: Is Fnet=ma Correct?
- rachelamaryah
- · Replies 8 ·
Calculating Vector Components at 45 Degrees
- thehatchetmen
- · Replies 4 ·
What is the final velocity of the goalie after catching a hockey puck?
- itsmarasilly
- · Replies 2 ·
Two objects colliding & sticking together, what is their final speed?
- itsmarasilly
- · Replies 1 ·
How Do You Calculate the Coefficient of Kinetic Friction for a Moving Crate?
- Mebmt
- · Replies 1 ·
Car momentum in kg m/s and velocity of second car
- itsmarasilly
- · Replies 1 ·
Does moment of inertia coefficient affect rotational difficulty?
- fk378
- · Replies 1 ·
How Much Work to Compress a Spring Further by 7cm?
- aleferesco
- · Replies 4 ·
Pendulum in Simple Harmonic Motion
- smile05
- · Replies 3 ·
How Does Friction Affect Spring Compression on an Inclined Plane?
- nns91
- · Replies 3 ·
Simple harmonic motion and oscillation period
- 05holtel
- · Replies 2 ·
Spinning Frame of Reference: Inertial or Non-Inertial?
- alpha372
- · Replies 2 ·
What is the slope of a force vs. distance graph?
- JJBladester
- · Replies 2 ·
Pistons, Pressure, Work, and Height
- Phoenixtears
- · Replies 2 ·
Calculating Projectile Work and Force in a Compressed Helium Launcher
- Woopy
- · Replies 11 ·
I am having trouble relating to impulse
- harvellt
- · Replies 4 ·
Diffraction and interference patterns
- nokia8650
- · Replies 3 ·
Understanding Polarisation of Light
- nokia8650
- · Replies 2 ·
Solving Missile Motion Problems: Answers & Explanations
- malay ko
- · Replies 1 ·
Charge through battery and capacitor when S connects C4 to circuit
- noppawit
- · Replies 3 ·
An elastic collision in two dimensions
- Woopy
- · Replies 30 ·
Friction between 2 masses and maximum acceleration
- 12thString
- · Replies 4 ·
How Do You Calculate Torque in a Static Equilibrium Problem?
- jaded18
- · Replies 13 ·
How Does Jet Engine Thrust Affect Train Kinetic Energy?
- citypigeon
- · Replies 2 ·
Electron acceleration in cathode ray tube
- cbrowne
- · Replies 4 ·
Angular acceleration of a cylinder on an inclined plane
- tidus1117
- · Replies 1 ·
Angular Acceleration of a Model Rocket
- x2008kwa
- · Replies 4 ·
Circular motion and gravitation
- Inertialforce
- · Replies 3 ·
Coefficient of static friction for crate in braking truck
- redhawks
- · Replies 4 ·
Point charges in a line; electric field
- etagg
- · Replies 3 ·
How Do You Calculate the Tangential Force on a Pole?
- jumbogala
- · Replies 1 ·
Calculating angular speed out of tangential speed
- catstevens
- · Replies 1 ·
Vertical acceleration of a rod rotating around a pivot
- yankans
- · Replies 9 ·
Carnot engine problems 16-18: why are 17 and 18 hoaxes?
- kuahji
- · Replies 1 ·
Energy required to expand V of cylinder
- vertciel
- · Replies 2 ·
How to Calculate Horizontal Distance in a Ballistic Pendulum Experiment?
- stanford1463
- · Replies 4 ·
Solving a Complex Rotational Dynamics Problem
- x2008kwa
- · Replies 5 ·
Does the Water Freeze When a Cooled Aluminum Cylinder is Placed in It?
- mtu8
- · Replies 16 ·
Maximum horizontal range-shot putting
- bobbyc15
- · Replies 1 ·
How Much More Infrared Does a Sick Individual Emit Compared to a Healthy One?
- MSmith19
- · Replies 3 ·
Standing Waves Formula Question
- jessedevin
- · Replies 1 ·
Finding recoil velocity of a gun after firing a bullet
- Woopy
- · Replies 6 ·
Balistic Pendulum Equation Solution
- Woopy
- · Replies 4 ·
Energy Conserved in momentum problem
- Woopy
- · Replies 8 ·
Effects of Increasing Temperature on Ideal Gas
- jimbo71
- · Replies 1 ·
Where is the Greatest Pressure in Fluid Dynamics?
- jimbo71
- · Replies 2 ·
Pressure and force in 3 different containers
- hellblazer970
- · Replies 5 ·
Calculating Max Depth of Apparatus on Mars
- jimbo71
- · Replies 4 ·
How Do You Calculate the Coefficient of Friction?
- liz777
- · Replies 1 ·
How is the cylinder's motion affected by changing the tension of the string?
- soupastupid
- · Replies 10 ·
Simple Newtonian Mechanics question (infamous box and ramp question)
- mjdiaz89
- · Replies 4 ·
Calculating Angular Momentum with Constant Torque: A Particle in Motion
- lebprince
- · Replies 5 ·
Solving the Tension in Three Object Pulley System
- bluejay1
- · Replies 2 ·
Bungee Jumper/Oscillatory Motion
- jromega3
- · Replies 7 ·
Six homework questions on radioactivity, light, pressure, and forces
- alliecr
- · Replies 1 ·
Electromagnetic Waves Question, regarding Magnetic Field and Electric Field
- TFM
- · Replies 25 ·
How Much Energy Was Lost to Friction When Braking Downhill?
- davedave
- · Replies 1 ·
What is the net force on the roof
- robvba
- · Replies 2 ·
What is the Time and Distance for a Hockey Player to Catch Up with an Opponent?
- cbrowne
- · Replies 3 ·
How Accurate Are These Sig Fig Calculations and Unit Conversions?
- cbrowne
- · Replies 1 ·
Find the depth of a tube submerged in water that is half filled with air
- KEØM
- · Replies 9 ·
Calculating Initial Speed and Velocity of Thrown Keys
- cbrowne
- · Replies 2 ·
Simple temperature ratio question
- bpaterni
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Loss of mechanical energy in a plastic collision
- fluidistic
- · Replies 7 ·
Cooking Veggies: Boiling or Steaming - Which is Faster?
- dsptl
- · Replies 3 ·
Finding distance that a pad is compressed after being dropped
- Greywolfe1982
- · Replies 4 ·
How Do You Calculate the Physics of a Race Car on a Banked Curve?
- Jayker
- · Replies 8 ·
Does a floating block make the total measured weight less?
- krayziemuzick
- · Replies 4 ·
Solving for Period of SHM with Pendulum Hitting Peg
- keasterling
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What is the acceleration of the center of mass of the cylinder?
- cloudzer0
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How Fast Does Roller A Rotate?
- tom23
- · Replies 1 ·
Solving a Puzzling Motor-Wheel Problem
- saltine
- · Replies 4 ·
Maxwell's Equations: Help to truly understand them
- TFM
- · Replies 6 ·
Determine the wavelength of the wave
- keemosabi
- · Replies 2 ·
Solving for Depth in Boyle's Law: Barometer Tube Submerged in Water
- aamphys
- · Replies 3 ·
At what angle should the boy pull the sled to minimize force?
- slugglee
- · Replies 1 ·
Rods & Springs Oscillations: Frequency Calculation
- thejinx0r
- · Replies 1 ·