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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Action/reaction on superposed masses
- Werg22
- · Replies 1 ·
Square Rooted varible by itself (/x)
- bushman91
- · Replies 4 ·
Dropping a package onto an accelerating truck from an overpass
- DB
- · Replies 2 ·
Solvng Circuit Problems Involving R1, R2, R3, and R4
- mr_coffee
- · Replies 5 ·
How Does the Angle of Incline Affect Current in a Sliding Rod Experiment?
- kpangrace
- · Replies 1 ·
What is the Potential Difference between points a and b in this circuit?
- mr_coffee
- · Replies 2 ·
What Are the Wavelength and Frequency Intervals for the Lyman and Balmer Series?
- ussrasu
- · Replies 5 ·
Setting up 6 equations of equilibrium from FBD drawings
- caddyguy109
- · Replies 29 ·
When does a bungee jumper's maximum velocity occur?
- Atomos
- · Replies 1 ·
Satellites and Space station questions
- F.B
- · Replies 1 ·
Calculating Static Friction Between Two Blocks on a Roughened Surface
- BoogieL80
- · Replies 4 ·
Why isn't this right? Finding the Va-Vb, kirchofs rule
- mr_coffee
- · Replies 1 ·
Converting Linear Equation to Angular Equation
- mpm
- · Replies 2 ·
How Can You Calculate the Order of Maxima in a Diffraction Grating Experiment?
- dekoi
- · Replies 1 ·
Calculating Original Speed of Truck Travelling 41.7m in 6.2s
- killer22
- · Replies 1 ·
Does T(t) = 2π/ω(t) apply when angular velocity changes?
- Skomatth
- · Replies 3 ·
Which is more likely to topple you - catching a ball or bouncing off
- Weatherkid11
- · Replies 2 ·
How Many Revolutions Does a Football Make in a Perfect Spiral Pass?
- leezak
- · Replies 1 ·
AS Level Physics Circuits Question
- QueenFisher
- · Replies 1 ·
Waves (Sinos., Interference, etc.)
- dekoi
- · Replies 2 ·
Rolling motion linear and translation equation
- ambuj123
- · Replies 2 ·
What the isn't this plug and chug?
- mr_coffee
- · Replies 4 ·
Momentum from F in component form
- EricHoffman
- · Replies 2 ·
Ow long does it take for the charge to build up to 9.0 µC? RC circuits
- mr_coffee
- · Replies 7 ·
Estimating Energy Needed for Cooling Tunnel with 177.21kg/s Water Flow
- ante_S.
- · Replies 2 ·
Calculating the Minimum Acceleration for a Wooden Block to Stay on a Cart
- frigid
- · Replies 8 ·
How Do Sound Waves Interfere and How Does Light Travel in a Medium?
- dekoi
- · Replies 1 ·
Wave Function of Moving Particle: Which is Correct?
- asdf1
- · Replies 2 ·
Solving Physics Problem: Hot & Cold Liquids w/Formulas
- Zygotic Embryo
- · Replies 1 ·
Understanding Elevator Physics: Solving a Mass Discrepancy on a Bathroom Scale
- dragon513
- · Replies 2 ·
Easy pressure and fluid problemsi swear
- Dantes
- · Replies 1 ·
Physics string tension problem
- Stalker23
- · Replies 1 ·
Fm Magnitude in 90° Arm Holding 60-N Weight
- arram
- · Replies 1 ·
Solve for Post-Collision Masses: Conservation of Momentum
- jmill5504
- · Replies 4 ·
How are electromagnetic waves created?
- jena
- · Replies 3 ·
Springs I've been working on this for several hours
- DKPeridot20
- · Replies 1 ·
Period of Oscillation of Mass on Massless Rod with Springs
- asdf60
- · Replies 9 ·
Why do colliding objects have equal changing velocities if momentum is conserved?
- Werg22
- · Replies 1 ·
What Is the Peak Value of the E-Field If the Magnetic Field Is 2 x 10^-7 T?
- jena
- · Replies 2 ·
Finding the Length of the Diagonal of a Rectangle
- Zygotic Embryo
- · Replies 4 ·
Problem involvining Kinetic and gravitational potential energy
- hraklis_1
- · Replies 1 ·
Calculating Impulse on Bungee Jumper from 78m Fall
- Punchlinegirl
- · Replies 9 ·
Why does the small oscillation formula give the wrong frequency for a pendulum?
- asdf60
- · Replies 2 ·
Point Charges creating an electric field
- squib
- · Replies 1 ·
Speed and normal force for a 10kg mass in a 3m radius circular loop
- Cougar1112
- · Replies 1 ·
Two blocks connected by rope with 50 N force at 36 degrees
- Cougar1112
- · Replies 1 ·
Help with Physics: General Suggestions
- lorelyi328
- · Replies 3 ·
Massless particle revolving in a circle
- iNCREDiBLE
- · Replies 3 ·
Was Momentum Conservation Used Correctly in Calculating Bullet Velocity?
- Chocolaty
- · Replies 2 ·
Finding friction and acceleration for a 3.5kg box pushed at 40 degrees
- suspenc3
- · Replies 2 ·
Will the Projectile Hit the Falling Target?
- 404
- · Replies 10 ·
What is the Correct Calculation for Impulse in Soccer Heading?
- Punchlinegirl
- · Replies 5 ·
How Does a Pellet Gun's Force Affect a Wall?
- WarpDrive
- · Replies 1 ·
How Does the Angle Theta Affect Frictional Force in a Mop Sliding Problem?
- WarpDrive
- · Replies 1 ·
Ranking mechanical energy of oscillating springs
- DKPeridot20
- · Replies 4 ·
Comparing electric field strength between two points near charges
- dekoi
- · Replies 1 ·
Running to catch a bus accelerating at 3 m/s²
- jdenn
- · Replies 12 ·
Why Is the Mass of the Equal-Arm Balance Neglected in Torque Calculations?
- Ginny Mac
- · Replies 1 ·
Is Internal Energy Change Consistent for Different Paths in Thermodynamics?
- 2Pac
- · Replies 5 ·
Magnet A Pulls Magnet B with 30N - How Much Force Does Magnet B Pull?
- aneima6
- · Replies 7 ·
Finding Tension in Multibody Systems in AP Physics II
- z-component
- · Replies 4 ·
What Type of Friction Affects a Stationary Motorcycle on a Ramp?
- captainnumber41
- · Replies 1 ·
Air wedge interference: why does change in m equal 1 for coinciding lights?
- chickens
- · Replies 6 ·
Rotational Motion and Equilibrium Problems, Work Checking
- kris24tf
- · Replies 2 ·
How Many Electrons Are Needed to Levitate a Person?
- dekoi
- · Replies 5 ·
Roller coaster loop conservation of energy?
- Seiya
- · Replies 6 ·
When does friction in a car becomes positive?
- chronocross_xp
- · Replies 1 ·
Solving a Simple Collision Problem: Finding Velocity and Kinetic Energy Loss
- physicsisphun
- · Replies 1 ·
How Long Does It Take a Rolling Spool to Hit the Floor?
- willworkforfood
- · Replies 1 ·
How Much Work is Done Pushing a Crate Up an Incline?
- Jeann25
- · Replies 1 ·
- What is the tension in each wire?
- IB
- · Replies 4 ·
Solving the Water-Lifting Puzzle: An Analysis of Efficiency and Output
- Izekid
- · Replies 2 ·
Skateboarder Reaches 4.45m in Half-Pipe Event at Olympics
- Chocolaty
- · Replies 2 ·
Spring Constant and Potential Energy
- cdm1a23
- · Replies 6 ·
Minimum uncertainty in momentum from Heisenberg principle
- ucdawg12
- · Replies 1 ·
Finding the phase angle in simple harmonic motion
- erik-the-red
- · Replies 4 ·
How Is Oil Used as an Energy Source and What Determines Its Efficiency?
- rockergirl
- · Replies 1 ·
How Can I Calculate the Speed at Which a Motorcycle Falls Off the Wall of Death?
- jwhitley
- · Replies 3 ·
Calculating Artificial Gravity on Rotating Space Station: Finding rA, rB, and g
- avenue
- · Replies 7 ·
Vertical Circles/Work-related Physics
- physixnot4me
- · Replies 1 ·
Maximum angle for total internal reflection in a pipe
- Pepsi24chevy
- · Replies 2 ·
Calculating Heat Transfer and Latent Heat
- sin_city_stunner
- · Replies 6 ·
Communications Satellite Orbital Period: What Is It?
- joro
- · Replies 2 ·
Kinetic energy/circular motion problems
- physixnot4me
- · Replies 1 ·
Finding Spring Rebound Distance with Given Mass and Constant k
- amcavoy
- · Replies 9 ·
Rotational Motion: Calculating Angular Speed of Disk and Neutron Star Spin Rate
- jakeowens
- · Replies 2 ·
Funky Elastic Collisions: Solving for Post-Collision Velocities
- ms. confused
- · Replies 3 ·
How Do Sound and Light Interfere in Physics Problems?
- dekoi
- · Replies 3 ·
What does 'y' represent in double-slit interference formulas?
- dekoi
- · Replies 4 ·
Ski sliding down incline with friction using energy conservation
- jrd007
- · Replies 16 ·
Water slide problem: where does the swimmer splash down?
- jbgibson
- · Replies 9 ·
Acceleration and tension in a 3-mass pulley system with 2 on one side
- jamesbob
- · Replies 2 ·
What is the most widely used magnitude system for CCDs?
- big man
- · Replies 4 ·
What's wrong with my car engine efficiency calculation?
- Izekid
- · Replies 4 ·
Angular Velocity and Tangential Acceleration Explanation
- allstar1
- · Replies 3 ·
Car dragging trailer with friction and air resistance
- Iloveschool
- · Replies 10 ·
What Is the Frictional Force Acting on a Skydiver at Constant Velocity?
- frigid
- · Replies 2 ·
Calculating Ocean Heat Capacity to Raise Temp 1°C
- sean1234
- · Replies 5 ·