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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Archived Standing Waves Proof for Open-Open Tubes
- alingy1
- · Replies 1 ·
Archived Relative error of a geiger counter?
- carnivalcougar
- · Replies 3 ·
Archived CMP. Probability of finding electron with E > fermi energy.
- bayan
- · Replies 1 ·
Transverse waves and the movement of particles
- NoIdea2015
- · Replies 3 ·
Maximum force on floor with two masses on a spring
- erisedk
- · Replies 3 ·
Why does P=VIt give watts instead of joules?
- GSK
- · Replies 5 ·
Archived Superposition to solve circuit with dependent source
- zealeth
- · Replies 1 ·
Archived Statistical physics Q: macrostates
- Irishdoug
- · Replies 1 ·
Calculate the work done by a force on a particle
- henrco
- · Replies 13 ·
Why does (u·v)² + ||u×v||² equal ||u||²||v||²?
- zr95
- · Replies 6 ·
Time for rocket to return to launch pad after engine failure at 555 m
- Fancypen
- · Replies 3 ·
What Is a Complemented Voltage Source in an Inverter Circuit?
- hitemup
- · Replies 9 ·
Errors in calculating the acceleration of gravity
- Puchinita5
- · Replies 22 ·
A body thrown upwards with some external force
- Anjum S Khan
- · Replies 5 ·
Which law of motion accounts for seatbelts
- jakeginobi
- · Replies 5 ·
Conical pendulum rod angle in an inertial frame
- patiladitya98
- · Replies 1 ·
Electric field at (x,y) from uniformly charged rod.
- MusWolf
- · Replies 1 ·
Archived Orbital Quantum Numbers And Total Electron Energy
- BOAS
- · Replies 1 ·
Displacement from an Acceleration Time Graph
- CGI
- · Replies 2 ·
I'm struggling on manipulating kinematics
- Rebecca Berger
- · Replies 6 ·
Problem on Mechanics (Newton's law of motion)
- Christy0721
- · Replies 4 ·
Momentum Ball Collision Find Normal Force
- aimen khattakk
- · Replies 17 ·
Why do different methods give different times for constant velocity segments?
- Eclair_de_XII
- · Replies 4 ·
Difference between Newton's 2nd Law/3rd Law of motion?
- jakeginobi
- · Replies 3 ·
Finding maximum electrostatic force on particle 3 between two charged particles
- CARNiVORE
- · Replies 15 ·
Linear momentum and Angular momentum
- bubblewrap
- · Replies 16 ·
Archived Verify Book Solution for Radius of Curvature Problem
- skeeter
- · Replies 1 ·
Rollercoasters and Loops and Normal Forces
- komarxian
- · Replies 1 ·
Average Velocity for Three People's Trips
- Balsam
- · Replies 13 ·
Archived Mixing steam at different pressures
- Morey
- · Replies 1 ·
Question on Deriving Physics Equations
- BadgerBadger92
- · Replies 1 ·
Archived Vapor composition from bubble-point temp.
- zaboda42
- · Replies 1 ·
Projectile Motion: Determine v_0 to go over a fence
- CapnKrump
- · Replies 4 ·
Earth's Magnetic Field Lab question
- lloyd21
- · Replies 35 ·
Calculating pressure exerted by a cylinder
- connorm710
- · Replies 1 ·
Archived Fluid statics and relative humidity problem
- Rugile
- · Replies 1 ·
Why Does the Laminar Flow Equation Use Different Coefficients?
- hotjohn
- · Replies 14 ·
Archived Easy Dilatation of Material Problem
- Nexttime35
- · Replies 1 ·
How Does Gauss' Law Apply to an Infinite Charged Wall?
- RobTwox
- · Replies 35 ·
Finding E-field at a point away from a line charge
- Geophyx
- · Replies 1 ·
What is the Photon Flux for a 100 MHz Signal Traveling 4 Light Years Away?
- Ashley1nOnly
- · Replies 5 ·
Test charge polarity in Giancoli's electric field equation
- kiwibird4
- · Replies 1 ·
Archived Find the field of two infinite strips of width b
- KeithPhysics
- · Replies 1 ·
Archived Optimal day to observe Omega Centauri given RA and Dec
- pondzo
- · Replies 1 ·
What is the Maximum Constriction Radius in the Artery Given These Conditions?
- Dillion
- · Replies 1 ·
Data from pulsars - light curves?
- rnielsen25
- · Replies 4 ·
What is the Angle Made by a Pendulum Using Parallel Lines?
- Priyadarshini
- · Replies 16 ·
Finding coefficient of restitution when a tennis ball bounces
- Revengeance
- · Replies 6 ·
How to make sense of this velocity-time graph question?
- TheExibo
- · Replies 3 ·
E field due to a finite line of charge
- Jake 7174
- · Replies 30 ·
Vertical trajectory equation for horizontal projectile launch
- nsola101
- · Replies 14 ·
Calculating Current in a Series Circuit with an LED
- Marcin H
- · Replies 11 ·
The Steady-state motion of a forced oscillator
- RJLiberator
- · Replies 11 ·
Maximum work obtained by mixing 2 gases
- superduper
- · Replies 5 ·
Object in equilibrium between 2 fluids
- Epiclightning
- · Replies 5 ·
Why is the ideal gas law written as PV=mRT instead of PV=NRT?
- goldfish9776
- · Replies 3 ·
Finding coil area from charge and magnetic field using Faraday's law
- AlexPilk
- · Replies 1 ·
Electromagnetic wave amplitude at dielectric interface
- phoenix95
- · Replies 9 ·
Heavily Damped Oscillator Equation
- RJLiberator
- · Replies 5 ·
Is the Change in Momentum the Same When Dropping a Glass on Concrete vs Carpet?
- Revengeance
- · Replies 2 ·
Cart/putty collision question (conservation of momentum)
- mnphys
- · Replies 6 ·
Internal energy of a decaying atom (simple energy problem)
- mnphys
- · Replies 5 ·
How do I subtract vectors with compass directions?
- Balsam
- · Replies 7 ·
Centrifugal acceleration in rotating frame
- bznm
- · Replies 3 ·
Work on 1 pulley system and two masses
- whatname
- · Replies 3 ·
Find voltage across 6A current source using node voltage method
- Marcin H
- · Replies 15 ·
Adding and Subtracting Vectors of Different Directions
- Balsam
- · Replies 1 ·
Two Particles Collide - Momentum and Energy
- TristanJones
- · Replies 18 ·
Average Velocity for One Person's Trip
- Balsam
- · Replies 2 ·
Is it Better to Use a Diagram or Math to Calculate Displacement?
- Balsam
- · Replies 3 ·
Finding electric field of a wire within a cylinder
- ConnorL0404
- · Replies 3 ·
How Do You Determine the Work Function of a Photoemissive Material?
- Anton999
- · Replies 1 ·
Acceleration vs Time Bungee Graph
- ZCV99
- · Replies 1 ·
How Does External Force Affect a Rotating Disc and Ring System?
- SDewan
- · Replies 6 ·
Kinetic friction in a two mass, one pulley problem
- StonedPhysicist
- · Replies 9 ·
Electron velocity for 1 meter de Broglie wavelength
- ognik
- · Replies 7 ·
Velocity Profile Analysis for Force Balance Equation in Fluid Dynamics
- hotjohn
- · Replies 38 ·
How much current does the elevator consume?
- AlexPilk
- · Replies 1 ·
Focal length of diverging lens with two-lens system
- kent davidge
- · Replies 14 ·
Elastic Collisions between two objects
- Flinze
- · Replies 1 ·
Centripetal and Tangential Acceleration
- Arkun
- · Replies 1 ·
Why Does a Canoe Move Away When a Package Is Thrown to Shore?
- Balsam
- · Replies 1 ·
Conservation of Angular Momentum; angle of rotation
- Knight to b2
- · Replies 3 ·
How Does Friction Impact Bobsled Acceleration?
- Balsam
- · Replies 1 ·
Introductory quantum mechanics problem
- phys-student
- · Replies 3 ·
Finding net force on accelerating airplane with mass 5.32×10⁴ kg
- Balsam
- · Replies 3 ·
What force causes a body to move into the windshield when a car suddenly stops?
- Balsam
- · Replies 3 ·
Conservation of Momentum in Weightless Environments
- Balsam
- · Replies 14 ·
Graph displacement as function of time
- Gbox
- · Replies 3 ·
Fluid Dynamics: Calculating Speed and Force in Syringe Experiments"
- vincekillics
- · Replies 2 ·
E Field Due to Infinite Lines of Charge Where r --> 0
- Jake 7174
- · Replies 14 ·
Work and power when lifting a box diagonally
- ApPhysicsStudent
- · Replies 9 ·
Back emf in loudspeaker coil at 20 kHz with 56 μH inductance
- lloyd21
- · Replies 10 ·
How Can You Calculate Mass Using Force and Acceleration?
- Balsam
- · Replies 2 ·
Back EMF in loudspeaker coil at 20 kHz with 56 µH inductance
- David Truong
- · Replies 9 ·
Projectile Motion Ball throw Question
- Coolguynice
- · Replies 3 ·
How did they integrate the charge for Voltage question
- kiwibird4
- · Replies 5 ·
Real Part of Gain of LRC Circuit
- PatsyTy
- · Replies 8 ·
How do I find the Norton equivalent from the Thévenin equivalent?
- Marcin H
- · Replies 21 ·
Finding electric flux through the circular cap of a sphere
- quaticle
- · Replies 12 ·