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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Find how long a marble rolls down a ramp, given distance and angle
- camelCaseD
- · Replies 9 ·
Inclined Plane Rotational Motion
- phoenixXL
- · Replies 27 ·
Gravitational force for a ball and particle
- PKay
- · Replies 7 ·
Inelastic collision between ball and rotating system.
- MangoMaster
- · Replies 21 ·
Energy of Conservation Lab Report Question
- jdawg
- · Replies 8 ·
Work Energy Theorem and Kinematics
- layout4it
- · Replies 4 ·
Spherical Capacitor: Calculating Capacitance in pF
- professordad
- · Replies 1 ·
Force per unit length on wire in square arrangement with four current-carrying wires
- CookieSalesman
- · Replies 6 ·
Net Electric field and electric net force
- lonlyway
- · Replies 2 ·
Constant electric field in the sphere
- Tanya Sharma
- · Replies 4 ·
Speed of a rope sliding off a peg?
- Kavorka
- · Replies 8 ·
Which Coin Flies Off First from a Speeding Turntable?
- alingy1
- · Replies 2 ·
Solve Fusion & Einstein Homework: Energy Output & Mass Conversion
- Sastronaut
- · Replies 1 ·
Elastic glancing collision problem
- kjean
- · Replies 4 ·
Finding impact speed of a high altitude free fall
- Kavorka
- · Replies 2 ·
How Do You Calculate Kinetic Energy in Relativistic Dynamics?
- Scientist94
- · Replies 8 ·
Calculating Wavelength of Longitudinal Wave in Water from Steel
- MasterPnut
- · Replies 1 ·
Problem with the weigth of the moment arm
- SwedishFred
- · Replies 2 ·
Vertical Rod with two masses attached falling over table.
- DeLaHostia
- · Replies 2 ·
What have I done wrong? (torque and angular momentum)
- PhyIsOhSoHard
- · Replies 2 ·
Electron being shot between two plates
- hvthvt
- · Replies 3 ·
How Does a Head Crash Affect Hard Drive Spin Dynamics?
- emmaden
- · Replies 1 ·
Car stopping distance at different speeds using energy
- lozah
- · Replies 4 ·
Magnetic Field and the resulting force
- adjacent
- · Replies 6 ·
Largest resistor value such that BJT remains in active mode
- theBEAST
- · Replies 2 ·
Which form of particle acceleration is safer?
- dasitmane
- · Replies 1 ·
BJT Circuit Problem Find Vc Quickly
- theBEAST
- · Replies 1 ·
Car moving up Inclined Plane question
- Ronaldo95163
- · Replies 1 ·
How to Determine Mass Flow Rate for Adiabatic Compression of Nitrogen?
- Fluidman117
- · Replies 2 ·
Direction of Compass Needle near a Solenoid
- aadarsh9
- · Replies 10 ·
Linear and circular accelerators
- dasitmane
- · Replies 1 ·
Time taken by a balloon to deflate
- Saitama
- · Replies 17 ·
Non-uniform electric field and conducting spheres
- ifailatlife
- · Replies 5 ·
What is conserved in the system?
- PhyIsOhSoHard
- · Replies 3 ·
Where does the friction come from?
- nomorenomore
- · Replies 5 ·
How to Solve a Friction Problem with Statics
- Jud
- · Replies 8 ·
What Determines the Net Force on Each Box When They Are Slowing Down?
- AZNathanielC
- · Replies 12 ·
Rock thrown up a 30° hill at 65° angle from horizon
- Bryson
- · Replies 6 ·
Why Does Enthalpy Decrease on Isothermal Compression?
- sero2000
- · Replies 1 ·
Moment of inertia and angular velocity
- nomorenomore
- · Replies 3 ·
How Do You Find the Position of Antinodes on a String with Fixed Ends?
- MasterPnut
- · Replies 5 ·
Circular motion and energy of a massless spring
- nomorenomore
- · Replies 5 ·
How Do You Calculate the Magnetic Field at a Point Along the Axis of a Solenoid?
- KracniyMyedved
- · Replies 2 ·
Frictional Forces Physics 1 Problem
- Almost935
- · Replies 3 ·
Spring constant based on change in potential energy
- sanctifyd83
- · Replies 12 ·
Spring Connected between 2 Masses
- MD_Programmer
- · Replies 8 ·
Where is the electric field zero?
- CatWhisperer
- · Replies 4 ·
Why must I use radians, not degrees, for cos(200t)?
- Coop
- · Replies 5 ·
Can velocity and acceleration point different ways than the object's motion?
- Lily Lauren
- · Replies 1 ·
Why do connected conducting spheres have equal potential, not charge density?
- tomizzo
- · Replies 6 ·
Physics 2, Three Infinite Straight Wires
- nathancurtis11
- · Replies 1 ·
Finding wire velocity in magnetic field with 425 mA current
- paytona
- · Replies 2 ·
How High Should a Street Lamp Be for Optimal Road Illumination?
- skrat
- · Replies 1 ·
Solving a Head-on Collision: Qs 1-4
- Jimmy87
- · Replies 5 ·
Thermodynamics problem - weight and piston connected by string
- Saitama
- · Replies 31 ·
How Does a Charged Bead Behave in a Capacitor?
- Peetah
- · Replies 4 ·
Finding the terminal voltage across 16V and 8V batteries?
- fishy
- · Replies 1 ·
Magnitude of acceleration given the orbit
- Shadow236
- · Replies 2 ·
Calculating Water Vapor Requirements for Temperature Change of a System
- Attis
- · Replies 12 ·
What Differentiates Simple Harmonic Motion from ψ = Amod(t) cos (wavt)?
- whitehorsey
- · Replies 3 ·
How to Calculate the Required Force to Move a Block Up an Incline
- Almost935
- · Replies 2 ·
Chain and spinning disk problem
- Rugile
- · Replies 22 ·
How many times does a bee fly between two people walking toward each other?
- nowayn
- · Replies 9 ·
Finding electrical energy used by a light
- owtu
- · Replies 8 ·
Kinetic energy of rocket explosion
- jc14
- · Replies 1 ·
Solving for radius of Milky Way dark matter halo
- QuantumX
- · Replies 13 ·
Can a 0.5 m³ cylinder fill a 5 m³ balloon using Boyle's law?
- Ronaldo95163
- · Replies 9 ·
Sliding block with motion restricted by spring
- itsalana
- · Replies 2 ·
How Do You Determine the Correct Phase Constant for a Wave?
- grassstrip1
- · Replies 3 ·
Semi-infinite string with a mass on the free end
- raving_lunatic
- · Replies 1 ·
How Long Does a Projectile Stay in Air When Launched Vertically at 10 m/s?
- GoGoGadget
- · Replies 4 ·
Temperature at junction of gold and silver bars?
- Feodalherren
- · Replies 4 ·
Capacitor and reactance question
- kkingkong
- · Replies 1 ·
Force applied to glove catching a 0.5 kg baseball at 35 m/s
- CougarPride
- · Replies 1 ·
Two methods for finding spring constant k
- Jay_
- · Replies 11 ·
Conservation of Energy: No Translational KE?
- nomorenomore
- · Replies 2 ·
Finding velocity as a function of position, constant acceleration
- crowned
- · Replies 11 ·
How to Show the E Field Outside a Long, Charged Conducting Cylinder?
- Plaetean
- · Replies 5 ·
Electrodynamics question - Induced EMF
- mrmoriarty
- · Replies 12 ·
Why is the Normal Force Neglected in Certain Scenarios?
- nomorenomore
- · Replies 1 ·
Change in temperature in the Gay-Loussac-Joule experiment
- Emspak
- · Replies 5 ·
Understanding Oscilloscopes: How Can We Use Them to Measure RC Circuits?
- tbdm
- · Replies 4 ·
Is Conservation of Energy Demonstrated in Particle Motion from A to P?
- Dumbledore211
- · Replies 4 ·
Kinematics - particle acceleration and distance travelled
- GoGoGadget
- · Replies 2 ·
Voltage of cylinder of radius R
- TwinCamGTS
- · Replies 6 ·
Ball attached to string attached to wall, find force against wall
- melizabeth
- · Replies 5 ·
Electric field of a non uniform charge of a cylinder
- TwinCamGTS
- · Replies 6 ·
Object dropped from height 2h: why is velocity 1.4v not 2v?
- GoGoGadget
- · Replies 1 ·
Why Does Helicopter Velocity Affect Package Drop Time?
- rexorsist
- · Replies 4 ·
Understanding Vector Addition and Magnitude Equality
- yoyo16
- · Replies 12 ·
Neutral conductor has a hollow cavity within it
- TwinCamGTS
- · Replies 1 ·
Deriving entropy change equation from Boltzmann's principle
- tombrown9g2
- · Replies 6 ·
Solve Falling Chain (3.11) Length & Speed
- Radarithm
- · Replies 13 ·
Centripetal Force String Tension
- scrambledeggs
- · Replies 5 ·
Find energy of a lightning strike
- sfgoat
- · Replies 2 ·
What is the force direction on a left wire in a parallel current setup?
- ivanwho49
- · Replies 4 ·
The energy of debris ejected from an asteroid impact
- QuantumX
- · Replies 9 ·
Charge Distribution on Metal Sheet
- Saitama
- · Replies 64 ·
Kinematics problems: snakes, rockets, sleds and trains
- deltangh
- · Replies 4 ·
Finding distance from velocity-time graph with piecewise linear motion
- liamporter1702
- · Replies 9 ·