Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
How Do You Calculate Tension in a Two-Block, Two-Pulley System?
- tigerseye
- · Replies 7 ·
Question regarding tension and acceleration
- Sanosuke Sagara
- · Replies 5 ·
Can you explain the forces at play in this work and energy problem?
- ra2000a
- · Replies 2 ·
Is My pH Calculation for HCl and NaOH Solution Correct?
- Mathman23
- · Replies 2 ·
Magnetic field from parallel wires and inside a current-carrying rod
- decamij
- · Replies 2 ·
Why Are Forces Equal When a Brick Breaks a Window?
- Up_Creek
- · Replies 2 ·
Instantaneous velocity problems
- Shay10825
- · Replies 9 ·
Finding spring constant when gas expands against a spring
- BlackMamba
- · Replies 2 ·
Calculating Final Velocity of a Car Rolling into a Station
- albert611
- · Replies 5 ·
Damped Simple Harmonic oscillator
- GingerBread27
- · Replies 2 ·
What Went Wrong in My SHM Proof Using Calculus?
- Silimay
- · Replies 2 ·
Calculation of Moments of Inertia
- Bri
- · Replies 10 ·
How Do You Derive the Slope from the Equation 2xy^2+xy=y?
- Tom McCurdy
- · Replies 2 ·
Displacement in simple harmonic motion
- Dragoon
- · Replies 2 ·
Work Done By Friction on flight bag
- Jatsix30
- · Replies 9 ·
Big Test Prep Questions (3 of 3)
- Tom McCurdy
- · Replies 3 ·
Two stacked blocks on a table. Friction problem
- HeRo
- · Replies 2 ·
I dont understand how antiderviative of 2 sin (2x) could be -cos(2x)
- mugzieee
- · Replies 2 ·
Four homework problems: gravitational force, galaxy mass, asteroid orbit, contact force
- AllAmericanGirl2004
- · Replies 4 ·
Why are entropy changes for N2, silver and water close in value?
- Corneo
- · Replies 2 ·
How do I find the parametric equations for a plane?
- vg19
- · Replies 2 ·
How Do You Calculate the New Concentration of IO3- After Dilution?
- decamij
- · Replies 2 ·
Flywheels and Rotational Motion
- Soaring Crane
- · Replies 3 ·
How Does Physics Explain Chemical Phenomena?
- PhysicsNovice
- · Replies 18 ·
Find out the Minimum Diameter Wire for a 176.00N Sign
- SnowOwl18
- · Replies 3 ·
Calculating EMF Between Rod Ends: Length L, Velocity V, B Vector T
- Physicsisfun2005
- · Replies 2 ·
Solve 3x(x+2)=-18: Is -1+or-the square root of 5 Correct?
- aisha
- · Replies 2 ·
Moment of Inertia and Kinetic Energy of Rotating Disk with Block
- Naeem
- · Replies 8 ·
Determine charge stored in capacitor
- MightyMeanie
- · Replies 2 ·
Roller Coaster Calculation Errors: Round Marble vs. Sliding
- JimmyRay
- · Replies 20 ·
Solving a Cart Losing Mass Problem
- LondonLady
- · Replies 4 ·
What is the average value of this function on the interval [0,1]?
- circa415
- · Replies 5 ·
How Can You Easily Change Number Bases?
- cdhotfire
- · Replies 4 ·
Limit of n((1+1/n)^n - e) as n approaches infinity
- twoflower
- · Replies 13 ·
Can a Compressed Spring Launch You Over a 15-ft Wall?
- yellowstriker
- · Replies 2 ·
Simplifying the Derivative of log(sqrt(1+log x)-sin x)
- courtrigrad
- · Replies 2 ·
Determine KE-PE in Inclined Plane Lab Experiment
- Link
- · Replies 5 ·
How High Does an Object Rise When Thrown Upwards at 20 m/s?
- tman
- · Replies 9 ·
Velocity of Item Falling Within A Sphere
- PhysicsIsNotMe
- · Replies 3 ·
Can Car1 Ramp Over Car2 Without Colliding?
- Nonok
- · Replies 8 ·
How to Solve for r and c in Two Equations with Known Quantity w
- zekester
- · Replies 2 ·
Elevator tension, bicycle friction, and jet plane acceleration
- AllAmericanGirl2004
- · Replies 14 ·
Density Distribution: Solving for V=0 and V=mω²x²
- Hypnotoad
- · Replies 2 ·
Why Are My Oscillator Problem Solutions Not Accepted?
- Mikey
- · Replies 2 ·
Gravitational Dynamics of Titanium-Devouring Aliens on a Spherical Asteroid
- PhysicsIsNotMe
- · Replies 12 ·
Waves Interference and Wavelength Calculations
- josephcollins
- · Replies 2 ·
Block on piston undergoing simple harmonic motion
- Quipzley
- · Replies 2 ·
How Do I Solve for Both c and r in a Complex Impedance Equation?
- zekester
- · Replies 2 ·
Understanding Power Series Differentiation and Integration
- kdinser
- · Replies 10 ·
Simple (supposedly) pendulum with unknown length and kinetic energy
- VinnyCee
- · Replies 4 ·
What were vaudeville theaters and why did they disappear?
- Smurf
- · Replies 3 ·
What is the Q Factor and Resonance of a Simple Pendulum?
- physicsss
- · Replies 3 ·
Calculating GPE and Power for a Cable Car Ride
- james_rich
- · Replies 2 ·
How Do You Simplify Conjugate Expressions?
- aisha
- · Replies 9 ·
Simplifying i^57 with complex numbers
- aisha
- · Replies 6 ·
How Do Velocities Change in a Two-Dimensional Elastic Collision?
- Bri
- · Replies 2 ·
Finding Mass of Bicyclist and Bike for Unbanked Curve Travel
- AllAmericanGirl2004
- · Replies 6 ·
Finding coefficient of kinetic friction given angle and acceleration
- Tabe
- · Replies 4 ·
Trigonometric Functions - Confusing question
- Markd
- · Replies 6 ·
Time to Slide 9m Down 38° Incline w/ Friction 0.25
- Vector86
- · Replies 15 ·
How fast is the trainee rotating in circular motion?
- trixid
- · Replies 22 ·
How can I linearize the equation for q/m in terms of V?
- GodsChild086
- · Replies 2 ·
Cannon projectile motion problem
- Jameson
- · Replies 5 ·
Proving time to origin for particle with inverse-square attractive force
- Tom McCurdy
- · Replies 3 ·
Designing an Effective Egg Drop Structure with 25 Straws and Scotch Tape
- tw88
- · Replies 10 ·
Friction Conundrum: Why Does Wheel Keep Rolling?
- Ravnus9
- · Replies 4 ·
What Is the Coefficient of Performance of a Carnot Air Conditioner?
- BlackMamba
- · Replies 3 ·
How Can Multiple ALUs be Connected to Create a Layered Structure?
- sjaguar13
- · Replies 5 ·
How Far Is the Hurricane From Grand Bahama After 4.5 Hours?
- CelebrityRose000
- · Replies 2 ·
Limit of recurrently given sequence
- twoflower
- · Replies 3 ·
Gaussian Optics / Paraxial Approximation
- DivGradCurl
- · Replies 2 ·
Finding electric force between charged balloon and denim with Coulomb's law
- NYROCKFAN
- · Replies 12 ·
Repulsion between two pith balls
- Biya
- · Replies 2 ·
Calculate Compressive Stress: 110N on 1.15cm Radius Cane
- SnowOwl18
- · Replies 2 ·
Prove the adjoint property of operator sum
- danja347
- · Replies 5 ·
How Do Gas Molecules Escape Earth's Atmosphere?
- Spectre5
- · Replies 8 ·
Where is the neutral point between 2 wires
- bchl85
- · Replies 2 ·
Equilibrium Problems - Finding Max Distance on Table
- T@P
- · Replies 2 ·
Buoyancy and Acceleration: Solving for Tension in a Vessel
- mousesgr
- · Replies 3 ·
Building a Spark Gap Radio Transmitter
- walksbystarlight89
- · Replies 2 ·
Estimated Derivative of Inverse Function at x=1
- UrbanXrisis
- · Replies 3 ·
Getting Physics Help: Home Run Edition
- Jameson
- · Replies 3 ·
How Do You Derive Equations for Position and Velocity in Simple Harmonic Motion?
- swatikiss
- · Replies 2 ·
Finding the Period of a Vertical Spring Problem
- Torquenstein101
- · Replies 4 ·
Solving Motion Equations for Conservation Laws
- Goldenlemur
- · Replies 10 ·
Volume of cork needed to keep a child 20% above water
- Dragoon
- · Replies 2 ·
Volume of cork needed to keep 40 kg child 20% above water
- Dragoon
- · Replies 2 ·
What Is the General Formula for Straight Chain Alkanes?
- EIRE2003
- · Replies 2 ·
Scale reading on a ferris wheel and friction on a spinning platform
- HawKMX2004
- · Replies 2 ·
Solving nC3 = 10 for n
- ms. confused
- · Replies 8 ·
Cork float volume to keep child afloat and hydraulic lift with apples
- shadow2006
- · Replies 2 ·
Solving Challenging Physics Problems: Loop-the-Loop and Skier Hills
- fizziksplaya
- · Replies 2 ·
Electric forces/static equilibrium doozy
- etc
- · Replies 4 ·
The electric field of two plates
- mborn
- · Replies 9 ·
Block sliding to a spring on an incline
- FancyNut
- · Replies 4 ·
Bicycle drive train chain speed and wheel angular velocity
- motionman04
- · Replies 2 ·
What Determines the Speed of a Roller Coaster on an Inclined Plane?
- intrigue
- · Replies 4 ·
What is the mass of the meter stick?
- Quipzley
- · Replies 3 ·
How Does the Center of Mass Affect Distance When a Dog Walks on a Boat?
- Twigs
- · Replies 2 ·
Calculating Temperature Change of a Lead Bullet on Impact
- porschedriver192
- · Replies 3 ·