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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Angular Velocity, Momentum, and Kinetic Energy
- xobeckynoel
- · Replies 1 ·
How to find out radius by velocity and an angle
- EggEgg
- · Replies 4 ·
Disk and cylindrical shell collision using angular momentum conservation
- Jim011991
- · Replies 1 ·
Calculating Speed of Bowling Ball Down Incline
- physicsgurl12
- · Replies 1 ·
Angular velocity and rotational equilibrium
- mollybethe
- · Replies 5 ·
Calculating Forces on a Window Washer's Scaffold
- physicsgurl12
- · Replies 1 ·
Angular velocity of cylinder when 10kg mass unwinds 25m of rope
- mollybethe
- · Replies 10 ·
Determining concentration by measuring pressure change
- Boltzano
- · Replies 1 ·
Charging capacitor through two bulbs vs discharging through one bulb
- sonetard
- · Replies 1 ·
How Do You Calculate Forces on a Plank with Unevenly Placed Weights?
- psychicgerm
- · Replies 1 ·
Determine angular velocity - Dynamics
- dvep
- · Replies 18 ·
Two Observers and the Motion of Protons
- tomz
- · Replies 1 ·
Rotational kinetic energy of a fly wheel.
- leoflindall
- · Replies 5 ·
How Does Simple Harmonic Motion Influence Precision Timing Devices?
- xobeckynoel
- · Replies 1 ·
Experiment regarding two pendulums which are linked
- WaterMelllon1
- · Replies 1 ·
Just what does it mean when a vector field has 0 divergence?
- flyingpig
- · Replies 9 ·
Ruby Goldberg Machine - Improvements/Ideas
- ChromoZoneX
- · Replies 4 ·
Gradiant question involving potenetial energy
- turlisk
- · Replies 1 ·
Mass Pulley Acceleration Problem
- Leeoku
- · Replies 6 ·
Obvious Magnetic potential question
- bayners123
- · Replies 10 ·
How Do You Calculate the Average Force of Air Resistance on a Projectile?
- neoncrazy101
- · Replies 4 ·
Mechanics of a ball sliding and rolling
- ASTaiyeb
- · Replies 1 ·
Why Is the Coefficient of Kinetic Friction Calculation Off by a Factor of 2?
- Leeoku
- · Replies 3 ·
What is the Proper Method for Calculating Moment of Inertia for a Disk?
- Screwdriver
- · Replies 7 ·
Speed of Sound - Errors and Enhancements
- ChromoZoneX
- · Replies 2 ·
Centripetal acceleration fan problem
- Adsy
- · Replies 5 ·
Energy from each battery in a double-battery circuit
- ezadam
- · Replies 5 ·
Gyroscope Angular Speed Calculation
- MozAngeles
- · Replies 1 ·
Two masses attached with a spring.
- nightwing973
- · Replies 2 ·
Ray diagrams for mirror ray tracing
- RickyWong
- · Replies 2 ·
How Do You Calculate the Work Done by Friction on a Skier?
- neoncrazy101
- · Replies 5 ·
Ratio of revolutions per second for electron and alpha particle in magnetic field
- zindra
- · Replies 2 ·
Charge to Mass Ratio of a Particle to Electron - Mass
- 5hassay
- · Replies 2 ·
How can I create realistic gravity code for my video game?
- AlbertRenshaw
- · Replies 4 ·
How Do Lorentz Transformations Relate to Rocket Frames in Special Relativity?
- accidentprone
- · Replies 6 ·
What is the potential at the center of a sphere with given boundary conditions?
- rolandas9999
- · Replies 1 ·
How Is Linear Velocity Calculated for a Cylinder on an Inclined Plane?
- kayron
- · Replies 3 ·
Kinetic energy of a rolling sphere
- kayron
- · Replies 9 ·
How Do You Calculate the Recoil Speed of Thorium 234 After Particle Emission?
- mogley76
- · Replies 6 ·
Rate of flow of water through a pipe
- zorro
- · Replies 2 ·
What Are the Effects of Cepheids Not Existing?
- lbtocth
- · Replies 1 ·
Rubber band powered bottle to roll up a shallow hill
- NathanJP
- · Replies 4 ·
Relativistic mass of neutrons from Q-value in nuclear decay
- ronpaulkid
- · Replies 1 ·
Series circuit answers correct?
- confused12345
- · Replies 6 ·
How deep is the well using the speed of sound?
- starji
- · Replies 6 ·
Neutron kinetic energy from uncertainty principle in nucleus
- curto
- · Replies 2 ·
Okay, now I understand it. Thank you!You're welcome.
- newyorkcity
- · Replies 15 ·
Simple Harmonic motion (non-calculus)
- suwarna07
- · Replies 10 ·
Ball attached to String (Potential Energy)
- goluigi2196
- · Replies 11 ·
Determine the Energy of Electromagnetic Radiation After Particle Collision
- tobywashere
- · Replies 2 ·
Evergy of Simple harmonic motion
- Jake4
- · Replies 3 ·
Beta decay problems, not getting the right answer
- crosbykins
- · Replies 1 ·
Finding voltage across R3 using nodal analysis
- PainterGuy
- · Replies 3 ·
Force Needed to Keep Mass on Wedge Stationary
- Violet42
- · Replies 7 ·
Specific Latent Heat and Thermal Physics
- Peter G.
- · Replies 4 ·
Two spaceships pass each other/fire rocket
- Leb
- · Replies 2 ·
Finding KE when given de Broglie wavelength
- vspectra
- · Replies 5 ·
How to find the voltage and current of this circuit
- silvercats
- · Replies 13 ·
Linear attenuation coefficient.
- nucerl
- · Replies 4 ·
Solve d²y/dx² - 4dy/dx + 5y = 25x - 3e^(2x) with y(0)=0, y'(0)=0
- Tan Bee Yong
- · Replies 7 ·
How to treat internal resistance in calculations ?
- Femme_physics
- · Replies 75 ·
Why is my fringe width formula half the correct value?
- cupid.callin
- · Replies 8 ·
How Do You Calculate Orbital Period with Limited Data?
- blackbyron
- · Replies 8 ·
How Is the Time Constant Calculated in a Series-Parallel RC Circuit?
- newyorkcity
- · Replies 3 ·
Current on Parallel Conducting Wires
- aglo6509
- · Replies 9 ·
Finding sphere density falling in oil with drag force
- abs123456
- · Replies 1 ·
Why does fixing a piston cause greater temperature rise for the same heat input?
- zorro
- · Replies 3 ·
Bulbs connected in series power consumed
- zorro
- · Replies 28 ·
Atwood machine with one frictionless and one friction pulley
- o0griff0o
- · Replies 3 ·
What is the Total Work Done to Reach a Speed of 60 mph?
- connphysics
- · Replies 13 ·
How Do You Determine Force from a Given Trajectory in Physics?
- Physics Help!
- · Replies 2 ·
Understanding Electric Field Direction Around Point Charges
- JooJupe
- · Replies 5 ·
Maximizing range and time aloft when throwing a ball at an angle
- FredGirl13
- · Replies 2 ·
Solve the 2011-Point Resistance Challenge!
- ashishsinghal
- · Replies 6 ·
Calculating Charge and Voltage in an RC Circuit with a Closed Switch
- the_storm
- · Replies 11 ·
At what velocity should relativity be taken into account
- moonkey
- · Replies 3 ·
Solving Doppler Shift to Calculate Cyclist's Speed
- Beatdiz
- · Replies 3 ·
Electronics current calculation
- Femme_physics
- · Replies 30 ·
Measuring speed of sound in air
- ecy5maa
- · Replies 22 ·
Simple pendulum period on Jupiter given Earth period
- teggenspiller
- · Replies 9 ·
Will 449nm light eject electrons from silver with 4.74 eV work function?
- crosbykins
- · Replies 1 ·
Calculating the Volume of a Concave Lens Using Multiple Integration
- gboff21
- · Replies 2 ·
Why did the examiner accept all 4 answers about simultaneity in special relativity?
- Shark 774
- · Replies 5 ·
Calculating Resistance Across a Hollow Sphere
- raj01b
- · Replies 1 ·
Force exerted on a seat on rollercoaster
- annamae
- · Replies 2 ·
What are the Components of a Circuit?
- WhiteTrout
- · Replies 6 ·
Rotational Motion and magnitude
- artsakh
- · Replies 28 ·
Standing waves and vibration frequency
- bigsaucy
- · Replies 1 ·
Why is my 1/y vs 1/x lens graph inverted compared to others?
- shakerist
- · Replies 8 ·
What is the Resistance Between Two Points in an Infinite Grid?
- FermatPell
- · Replies 2 ·
High power lasers and nature of light waves
- thalion777
- · Replies 8 ·
Idel van der Waals fluids and Helmholtz potential
- Telemachus
- · Replies 1 ·
Projectile Motion: Water Balloon Launch Project
- jrocco
- · Replies 3 ·
Why is absolute zero important in the PV = nRT formula?
- Peter G.
- · Replies 1 ·
How do I Calculate Acceleration from Distance and Time?
- hogga10
- · Replies 7 ·
Are Rolling Resistance Equations for Speed and Acceleration Accurate?
- Ideologue
- · Replies 4 ·
Tension Calculation for a Vibrating Violin String
- bigsaucy
- · Replies 4 ·
Forces problem: a donkey pulling a cart
- N_L_
- · Replies 3 ·
How Is Kinetic Energy Related to Spring Compression in Harmonic Motion?
- artsakh
- · Replies 10 ·
Mechanics problem - how fast for a car to take off on a hill.
- leoflindall
- · Replies 5 ·