Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Rotating Bar in uniform B Field
- Bluestribute
- · Replies 16 ·
Spring and weight, acceleration
- rlc
- · Replies 13 ·
Application of one dimensional force - Dynamics
- Paul W.
- · Replies 2 ·
Archived The Interdisciplinary Nature of Teaching Chemistry and Physics
- ezfzx
- · Replies 6 ·
How Does Friction Affect Acceleration in a Pushed Box?
- PiRho31416
- · Replies 2 ·
Calculating Time and Distance for a Tram with Sinusoidal Velocity
- ashclouded
- · Replies 5 ·
Train accelerates to speed v, holds it, then decelerates over distance L
- Troubadour
- · Replies 1 ·
Light emission and energy of states
- sindre00
- · Replies 12 ·
Kinetic energy lost when dart embeds in bicycle wheel rim
- rtsswmdktbmhw
- · Replies 9 ·
Trying to model the acceleration of a system due to an impulse forcing function
- theBEAST
- · Replies 4 ·
Solving Two Masses 3 Springs Homework Problem
- MMS
- · Replies 12 ·
Is Angular Momentum Dependent on Choice of Origin?
- rtsswmdktbmhw
- · Replies 6 ·
Physics Friction: Find Coefficient of Friction
- xCrissyX
- · Replies 1 ·
Enthalpy change for isothermal CO2 expansion using Berthelot equation
- MexChemE
- · Replies 6 ·
Torque and static equilibrium problem check
- Aristotle
- · Replies 12 ·
Electric potential ( with angle)
- dmack15
- · Replies 1 ·
Two Capacitors in series for two circuits
- andre220
- · Replies 8 ·
Cable tension for sign hung on pivoting pole
- SilverAu
- · Replies 2 ·
Positive slope instead of negative
- MMS
- · Replies 1 ·
Calculating Vertical Jump on Earth and the Moon
- alison16
- · Replies 5 ·
Understanding the Physics of a Cylinder Rolling Down a Slope
- TauMuon
- · Replies 1 ·
Why does rotational disk experiment give over 100% energy ratio?
- Warlord
- · Replies 5 ·
Phase change on reflection at different media interfaces
- uzman1243
- · Replies 2 ·
Average force on a baseball when struck by a bat
- brycenrg
- · Replies 2 ·
Gravitational Potential at a Midpoint: What is the Solution?
- pyman999
- · Replies 3 ·
Newton's Law's - Calculate time when given distance and tension
- Nicaragua
- · Replies 5 ·
An Explosive separation of two carts already in motion
- Eric Williams
- · Replies 8 ·
Centripetal force on Tarzan swinging on a 6m vine
- BadatPhysicsguy
- · Replies 22 ·
Showing that d²(v²)/dt² = 2g² for projectile motion
- Klaz
- · Replies 14 ·
Calculating Torque on a Gate in a Water Dam
- Notion
- · Replies 1 ·
Dimension Analysis and buckingham pi
- princejan7
- · Replies 1 ·
In the CNO cycle, how does Nitrogen-15 become Carbon-12 and Helium-4?
- AAAA
- · Replies 3 ·
How Do I Split This Vector into Components?
- nesan
- · Replies 2 ·
Calculate velocity of helium baloon
- Samuelriesterer
- · Replies 11 ·
Pendulum Oscillation Frequency?
- DivideBy0
- · Replies 1 ·
Is net work zero when lifting a book to rest at a higher point?
- neongoats
- · Replies 2 ·
Work of a Particle in the XY Plane
- Redfire66
- · Replies 1 ·
Work done on object vs work done by you
- rusty711
- · Replies 4 ·
How Can Lambda be Derived from Gauss's Law for an Infinite Line of Charge?
- beer
- · Replies 7 ·
Finding Torque in a Square: How to Determine the Distance for Calculating Torque
- Redfire66
- · Replies 1 ·
How far from the foot of the cliff does the ball land?
- inia6448
- · Replies 2 ·
What Forces Keep the Crate Stationary in an Accelerating Truck?
- Soniteflash
- · Replies 1 ·
Calculating Efficiency of Electric Vehicle
- bnashville
- · Replies 6 ·
Finding Force of Air Resistance on Parachutist Falling at 55km/h
- SCA
- · Replies 17 ·
Car launching off 35° ramp to clear helicopter blades
- bubblesarefun
- · Replies 15 ·
Ranking the Magnitude of forces
- sofix33
- · Replies 4 ·
Particles with a charge passing through electric field
- BadatPhysicsguy
- · Replies 1 ·
Differential equation for a rocket
- DontDeimos
- · Replies 1 ·
Power wasted/delivered to a resistor
- chris858
- · Replies 11 ·
Simple Harmonic Motion Pendulum problem
- bobbricks
- · Replies 5 ·
TOF (mass spectrometer) Analyzer Question
- carlphysics30
- · Replies 2 ·
What is the acceleration of the two blocks on a ramp?
- TheExibo
- · Replies 3 ·
Wheatstone bridge problem unable to understand
- Prince1281
- · Replies 27 ·
Faraday's Law - induced emf of a rotating loop
- Feodalherren
- · Replies 4 ·
Why Is the Normal Force on the Pulley Not Parallel to Gravity?
- zippeh
- · Replies 1 ·
A physics student is sitting on a rotating platform angular velocity question
- Kaitlin
- · Replies 6 ·
Calculate Potential Energy of Electron at a Parallel Plate Capacitor
- SpyIsCake
- · Replies 2 ·
Frictionless shove - kinetic energy and momentum
- PacFan01
- · Replies 1 ·
Percentage change in interior volume
- tige99
- · Replies 1 ·
Intensity of polarized light that has passed through two polarizing sheets
- Kant Destroyer
- · Replies 19 ·
How to find phi in simple harmonic motion
- FlorenceC
- · Replies 6 ·
Why must field lines from charge q connect in the Larmor formula derivation?
- albega
- · Replies 2 ·
How Does Frequency Affect the I/V Curve of a Lightbulb?
- ninjaduck
- · Replies 8 ·
Is My Buoyant Force Calculation Correct?
- hanag
- · Replies 3 ·
Gravity and Radius of the earth problem
- J.Sterling47
- · Replies 3 ·
Reciprocal Lattices and Ewald Sphere: Solving for a* and c* in a Tetragonal Cell
- PhysicsKid99
- · Replies 1 ·
Prove Poisson's Ratio is .5 for Small Strains
- _Anonymous_
- · Replies 2 ·
Two Blocks connected by a rope
- member 508213
- · Replies 10 ·
Scattering from a hard ellipsoid
- Present
- · Replies 1 ·
Day length and orbital period + apparent luminosity
- cbrons
- · Replies 18 ·
Finding minimum layer thicknesses for maximum reflection in a multi-layer coating
- toothpaste666
- · Replies 4 ·
The moment of inertia of a rod that is rotating off the end of the rod.
- Lewis Edmunds
- · Replies 2 ·
Wavelength of light in glass from travel time
- james.rg
- · Replies 2 ·
What is the question you are trying to answer?
- SomeoneElse
- · Replies 4 ·
Unsure of ΔUspring in regards to ΔKE
- Aviator_
- · Replies 4 ·
Why is Normal Force Negative in this situation?
- soccer123
- · Replies 4 ·
How Does the Larmor Formula Relate to Energy Conservation in Electron Motion?
- peripatein
- · Replies 2 ·
Electric charge in parallel plate capacitor with 2 parallel dielectrics
- AndrejN96
- · Replies 1 ·
Friction needed for a 60° beam on a wall supporting a 60 kg mass
- Patrikp
- · Replies 6 ·
Jet speed at bottom of vertical loop with 5g acceleration
- TheExibo
- · Replies 1 ·
Electric Field of a circular arc at a point
- Hijaz Aslam
- · Replies 3 ·
Calculating Time Delay for Radio Telescope Pointing
- toothpaste666
- · Replies 6 ·
Moments Problem -- 2 friends carrying a crate up a flight of stairs
- RyanUSF
- · Replies 5 ·
90 kg box pushed up 28° ramp at constant speed with and without friction
- olwyn
- · Replies 1 ·
Proof of disk moment of inertia using area density
- scain6043
- · Replies 1 ·
How Much Force is Needed to Move a Wire with Soapy Solution?
- EmilyO89
- · Replies 3 ·
A space vehicle splitting into two parts (velocity question)
- MNWO
- · Replies 6 ·
Moving wedge under vertical pin with friction at two surfaces
- DudleySquires
- · Replies 6 ·
Finding radius of curvature of an eyeball
- navm1
- · Replies 2 ·
Deriving the force-distance relationship from Coulomb's law
- garr6120
- · Replies 5 ·
What are the minimum and maximum temperatures?
- Dustin Cuocci
- · Replies 7 ·
An issue with Conical Pendulums
- ohmanitsDAAAAAN
- · Replies 3 ·
Why can't I see diffracted infrared from a CD with a remote control diode?
- XXZZ
- · Replies 3 ·
A spinning space station exhibits a change in moment of inertia.
- MacRowan
- · Replies 2 ·
What Is the Magnetic Field at Point P Due to a Short Current Element?
- reed2100
- · Replies 3 ·
Force on Each Mass in a Two-Mass Spring System
- Hereformore
- · Replies 2 ·
Projectile Motion - Time in Air
- air-in
- · Replies 3 ·
USAPhO 2009 F=MA exam #16, (angular frequency of a spring)
- Agrasin
- · Replies 14 ·
Simple Harmonic Motion and angular frequency
- Abid Rizvi
- · Replies 1 ·
Why is the resistance lower in a bulb which is turned on?
- davidbenari
- · Replies 14 ·