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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Unit Conversion: What went wrong?
- xiangru119
- · Replies 6 ·
Special relativity, delay of a clock in a plane
- fluidistic
- · Replies 3 ·
How Does an Electron Produce Total Field in a Capacitor Setup?
- shiu1
- · Replies 1 ·
Electric field magnitude from three point charges with Q=80nC, a=3m, b=4m
- roam
- · Replies 6 ·
Solve Magnetic Problem: Charge Q w/ Vector Force of B=0.25T
- shiu1
- · Replies 1 ·
Pulling/force/friction problem/throwing problem
- Gary531
- · Replies 1 ·
How Do You Calculate Interference Fringes in a Double Slit Experiment?
- roam
- · Replies 1 ·
Find Least Force to Move 10-ton Safe on Truck
- holy_kamote
- · Replies 10 ·
Potential difference between two points?
- bigbird24
- · Replies 3 ·
Calculating Apparent Depth Using Snell's Law
- roam
- · Replies 5 ·
Why does a loop contract in area to minimize flux linkage?
- arkofnoah
- · Replies 1 ·
Calculating Annuitized Capital Costs per kWh
- maaariiianne
- · Replies 15 ·
Physics - Polar Coordinates: Describe the locus of points
- bobraymund
- · Replies 3 ·
Why does water level drop when ice with a stone on top melts?
- starwars32
- · Replies 6 ·
Kinematics 1 dimensional motion acceleration question
- Hemingway
- · Replies 13 ·
Calculating Momentum and Velocity in a Football Collision
- pokeefer
- · Replies 2 ·
Calculating Mean Life of Mesons at Rest
- fluidistic
- · Replies 7 ·
Special relativity, simultaneity
- fluidistic
- · Replies 2 ·
Electric and magnetic flux through a Gaussian surface around a charged magnet
- marshmallow
- · Replies 1 ·
What Are the Answers to the Physics Olympiad Past Papers?
- Vincit
- · Replies 11 ·
Understanding Vector and Scalar Quantities in Physics
- Rawr
- · Replies 6 ·
Coefficient of kinetic friction and constant velocity
- archcos
- · Replies 1 ·
Plotting a wave equation in Excel for 100 terms
- Vergo
- · Replies 1 ·
How Long Should a Rocket Fire to Adjust a Satellite's Speed?
- pokeefer
- · Replies 7 ·
How Much Work and Force Are Involved in Marathon Running?
- spotmeter
- · Replies 5 ·
Calculating Voltage Difference in a Parallel and Series Circuit
- JonJon
- · Replies 2 ·
Electric Dipole derivation (Algebra)
- DrummingAtom
- · Replies 1 ·
Measuring the mass and linear dimensions of the block
- jinx007
- · Replies 5 ·
What Is the Best Way to Apply Brakes to Stop a Car Quickly?
- physicshelp28
- · Replies 3 ·
Ladder Angular Momentum Problem
- Karol
- · Replies 16 ·
Phase constant problem, two trumpets
- Daniiel
- · Replies 3 ·
Newtons 2nd Law of motion Practical Questions
- gregerson888
- · Replies 3 ·
Any general RC circuit is never underdamped?
- pawnfork
- · Replies 5 ·
Work to move charges from Infinity to origin
- lachy89
- · Replies 4 ·
Questions about Gravity and Acceleration of masses.
- mmmboh
- · Replies 5 ·
Which Direction Is the Electromagnetic Wave Traveling?
- roam
- · Replies 13 ·
Find Accel. of Blocks in Diagram
- mmainak
- · Replies 1 ·
Understanding Doppler Shift in Radio-Equipped Plumbing Vans
- StephenD420
- · Replies 8 ·
Finding heat of fusion from melting ice in warm water
- mlostrac
- · Replies 9 ·
Understanding Capacitors in DC Circuits
- ituser
- · Replies 1 ·
Force due to Collision and Acceleration Problems
- psuedodragon
- · Replies 7 ·
Finding Impossible Force with Two Given Forces
- sharkey1314
- · Replies 6 ·
Capacitance and resistance question
- coffeem
- · Replies 3 ·
What is the Force on the Hindges of a Door?
- diegocas
- · Replies 2 ·
Damped Harmonic Motion Equation
- Procrastinate
- · Replies 5 ·
Comparing gravitational acceleration formulas for planets
- rvnt
- · Replies 3 ·
Mechanics (statica) of a car (centre of gravity/grip)
- Hupke
- · Replies 1 ·
Fish weight on scale in accelerating elevator
- Ogakor
- · Replies 6 ·
Open circuit voltage and internal resistance of cells in series and parallel
- Follz20
- · Replies 1 ·
Maximum altitude of a rocket if launched vertically
- karan01
- · Replies 2 ·
Equation of Motion for a Pendulum
- gumball
- · Replies 2 ·
How Does Initial Water Height Impact Thermal Expansion Calculations?
- mlostrac
- · Replies 4 ·
Tension of 2 Bodies on a Frictionless Inclined Plane
- ewiner
- · Replies 3 ·
Supplied continuously-Tank Draining Problem
- nj_sk
- · Replies 4 ·
Calculating the Extension of a Spring with and without a Hanging Mass
- procrastin
- · Replies 8 ·
Curved vs linear fit for pendulum period vs length
- mlostrac
- · Replies 19 ·
Frictional Forces, Static Friction
- eprparadox
- · Replies 1 ·
Bungee Jumping Maths: Calculating Height, Length & Speed for NZ Bridge Jumps
- NicholasAllen
- · Replies 1 ·
Change in Gravitational Potential
- HZXAHNLfzjSr
- · Replies 7 ·
Calculating Coriolis and Centrifugal Forces in a Rotating Frame
- PhMichael
- · Replies 10 ·
Elastic collision between two objects
- coffeem
- · Replies 5 ·
Concept about double glazed windows
- mizzy
- · Replies 1 ·
How Effective Are Human-Powered Chargers for Everyday Use?
- azler
- · Replies 3 ·
Direction of magentic field with two wires?
- fm621
- · Replies 3 ·
Angular Diameter Eclipse Question
- Pronitron
- · Replies 2 ·
Deceleration of a mass down hill
- Big G
- · Replies 5 ·
Electron accelerated through TV tube using Newton's laws
- Ogakor
- · Replies 5 ·
Wire tension and motion in a pulley system
- mezmorize
- · Replies 4 ·
Calculating Frictional Force on an Inclined Plane
- SugerQueen
- · Replies 6 ·
Ball thrown into a vertical jet?
- topgun08
- · Replies 1 ·
Giancoli, 3rd Ed, pr. 55: Ellastic collision. Solved, but is there easier way?
- bjnartowt
- · Replies 2 ·
Calculating Current for 1.5T in Solenoid
- JonJon
- · Replies 1 ·
Calculating Daily Operating Cost for a Motor at Rated Load
- holy_kamote
- · Replies 4 ·
Electrostatics: electroscope leaf, water attraction, charge methods
- harimakenji
- · Replies 8 ·
Inertial reference frames problem
- eprparadox
- · Replies 2 ·
What is the correct equation for calculating free-electron density in sodium?
- hhhmortal
- · Replies 4 ·
Where have i gone wrong with this basic mechanics question?
- coffeem
- · Replies 3 ·
Floating spheres in antifreeze strength tester
- mizzy
- · Replies 1 ·
Maximum launch speed to avoid temperature inversion layer at height h
- Dekoy
- · Replies 4 ·
Understanding Lens Separation for Creating an Image at Infinity
- Thrax
- · Replies 1 ·
Distance of Lightning from Sound:346m/s
- priya.padma
- · Replies 1 ·
Longitudinal waves have a crest or not ?
- YOOKUNG
- · Replies 7 ·
How to Calculate Bullet Velocity in a Ballistic Pendulum Experiment?
- coffeem
- · Replies 17 ·
The Speed of a transverse wave
- golriz
- · Replies 1 ·
Finding tensions in 4 straps with uneven lateral placement
- M.D.G
- · Replies 11 ·
Statics and CM - Ladder Problem
- topgun08
- · Replies 1 ·
Which statement correctly describes speed?
- harimakenji
- · Replies 3 ·
Maximum height ratio for a rolling marble loop-the-loop
- topgun08
- · Replies 13 ·
Sustained interference patterns
- wakejosh
- · Replies 2 ·
Do relativistic effects make a star appear as small as a neutron star?
- IDOGAWACONAN
- · Replies 5 ·
Finding centroid of composite shape with triangles, square, and rectangle
- mratwi36
- · Replies 7 ·
Calculate Tension in Cables Using Pythagorus Formula
- mratwi36
- · Replies 1 ·
Algebra & Physics: When Rules Don't Apply
- madah12
- · Replies 5 ·
Solving Simple Capacitors Homework: Q, V, E
- HZXAHNLfzjSr
- · Replies 6 ·
Radius of curvature usng: M/I= σ/Y = E/R
- a5hl3yi
- · Replies 1 ·
Weight on a fulcrum style problem - Personal Interest
- c4nc3r
- · Replies 4 ·
Problem 1 on current electricity
- anshuiit
- · Replies 3 ·
How Do You Solve This Math Problem Using Substitution?
- anshuiit
- · Replies 1 ·
Help checking my velocity homework answers
- Mrnickles
- · Replies 4 ·
How do I find the surface charge of a cylinder?
- I dun get it
- · Replies 1 ·