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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"Understanding Fluorescent Lamps and Their Processes
- songoku
- · Replies 6 ·
Non-equilibrium applications of Newton's Laws of motion
- Mitsuki
- · Replies 2 ·
Does the Thomson Model of the Atom Fail at Large or Small Scattering Angles?
- ColdFusion85
- · Replies 4 ·
Difficult problem involving friction and torque
- tjkubo
- · Replies 1 ·
Skier sliding down 200 m hill at 10.5°, friction coefficient 0.075
- tdcman92
- · Replies 10 ·
Tension of a rope in a pulley system
- winthos
- · Replies 3 ·
How Do You Calculate the Velocity of a Powerboat Relative to the Shore?
- kamran93
- · Replies 1 ·
Net Work Done on Weight: Calculating 394N Force
- PepeF.
- · Replies 3 ·
Must the tension in a string be uniform?
- jeremy22511
- · Replies 7 ·
A really close answer-why? (conter of mass)
- stanton
- · Replies 2 ·
How can collisions and energy be related in a horizontal table scenario?
- JJBrian
- · Replies 1 ·
Energy to place 1 kg object in low-Earth orbit at 300 km
- lilmul123
- · Replies 3 ·
What is the Required Speed for a Successful Long Jump Shot?
- kamran93
- · Replies 3 ·
Normal force direction on particle in rotating slot
- silentwf
- · Replies 7 ·
A man jumps on a platform supported by springs (Work and Energy)
- Chandasouk
- · Replies 9 ·
Why does capacitor energy decrease when two capacitors are connected in parallel?
- SpartanG345
- · Replies 7 ·
Light incident on a grating for spectroscopy
- KaiserBrandon
- · Replies 1 ·
Calculating Force to Accelerate 6.3 kg Object at 44 m/s in 35s
- Ronaldo21
- · Replies 7 ·
Why use absolute value for angular friction in rotational motion
- warfreak131
- · Replies 8 ·
Find Specific Gravity of 8.3 kg Block in Water
- jti3066
- · Replies 8 ·
Hockey Question: How Far Does Crazy Chretien Slide?
- rpullo
- · Replies 2 ·
Normal Force at a certain point in a loop
- mickjagger
- · Replies 1 ·
Calculate Weight of "Weightless" Ichthyosaurus in Metric Tonnes
- robertsa
- · Replies 1 ·
What Is the Minimum Horsepower Required to Prevent a Ship from Sinking?
- pierra
- · Replies 1 ·
Calculate Weight of 3m^3 Ichthyosaurus in Metric Tonnes
- robertsa
- · Replies 3 ·
Calculating Electric Field Strength at a Specific Point on the x-axis
- WINSTEW
- · Replies 16 ·
Conservation of Momentum Elastic Collision Problem
- efekwulsemmay
- · Replies 5 ·
Why is the Time Constant Used in Solving Inductance Problems?
- exitwound
- · Replies 2 ·
Calculating Displacement in Two-Dimensional Motion
- Gamegoofs2
- · Replies 2 ·
What Is the Net Force Exerted on an Object?
- cpuboye11
- · Replies 4 ·
Work done by air on a baseball
- Chandasouk
- · Replies 5 ·
What Is the Minimum Acceleration Needed for a Jumbo Jet to Take Off?
- cheerspens
- · Replies 1 ·
Hooke's law y-intercept and percent difference with zero theoretical value
- exparrot
- · Replies 1 ·
Calculating the acceleration and kinetic energy of a bucket in a pulley system
- mmoadi
- · Replies 6 ·
Rotating bodies, Car around a corner
- Sakura22
- · Replies 13 ·
Free fall time calculations for object dropped from height
- cheerspens
- · Replies 1 ·
Work Done by Movers: Calculating Force Needed for Crate
- fattydq
- · Replies 3 ·
Horizontal velocity required to launch into orbit?
- fattydq
- · Replies 3 ·
Calculating the Radius of Curvature for a Car on a Hill
- waldvocm
- · Replies 3 ·
Solve Free Fall Problem: Object Launched at 25 m/s, Reaches 20m at 2.55 s
- cheerspens
- · Replies 2 ·
Rocket ascending with acceleration then coasting to maximum altitude
- cheerspens
- · Replies 1 ·
Block on inclined plane acceleration without rotating coordinates
- brainpushups
- · Replies 2 ·
What is the Upward Force of Water on a Sinking Stone?
- john411
- · Replies 3 ·
Solving Pool Table Problem: Cue Ball Momentum Change
- seraphimhouse
- · Replies 1 ·
Percentage of total beginning GPE converted to thermal/kinetic energy
- linkme251
- · Replies 1 ·
Mass dropped on spinning disk: angular momentum and friction
- jch11
- · Replies 1 ·
Pressure to lift a safety valve.
- tufferthandug
- · Replies 2 ·
Kinematics Formulas - Is the textbook right?
- Procrastinate
- · Replies 5 ·
Time for tangential force to accelerate disk to 210 rev/min
- monkey9988
- · Replies 1 ·
Why is the induced EMF on an inductor equal to -L (di/dt)?
- zero_kilo
- · Replies 7 ·
How Do You Calculate Resistance in a Radial Cylinder System?
- asi123
- · Replies 1 ·
Solve Wave Superposition: 2Asin(7π(x+vt)) cos (3π(x+vt)) at t=0
- kpou
- · Replies 1 ·
Dynamics of Particles : Problems involving pulleys.
- s.opethian
- · Replies 3 ·
Angles in Two-Dimensional Elastic Collision
- axcess
- · Replies 2 ·
Finding Center of Gravity in a 4-Object Arrangement
- stanton
- · Replies 1 ·
How Do You Calculate the Moment of Inertia for Displaced Sheets?
- alaam2005
- · Replies 1 ·
What Mass Should the Resting Pucks Have to Minimize Collisions?
- phyzwiz69
- · Replies 1 ·
How does mass affect the outcome of a head-on elastic collision?
- phyzwiz69
- · Replies 1 ·
Calculating Work Done on Pulley by Falling Block
- r_swayze
- · Replies 3 ·
Here i go Again, Phy 11 Forces
- john411
- · Replies 3 ·
Understanding Frictional Forces in Rotational Motion
- petitericeball
- · Replies 5 ·
Finding the moment of inertia of a compound object
- dentulousfing
- · Replies 3 ·
How to Calculate Net Force in Vector Addition with Given Forces and Angles?
- Appelgater
- · Replies 3 ·
Geosynchronus Sattelite Question
- bleedblue1234
- · Replies 11 ·
Finding Force Constant of a Spring
- court2011
- · Replies 11 ·
Normal force, car on curved road
- EV33
- · Replies 3 ·
Kepler's Laws and orbiting satellite
- G-reg
- · Replies 10 ·
Determine the work done by the pushing force
- jacksonpeeble
- · Replies 7 ·
How Do You Calculate the Expectation Value <x²> for a Particle in a Box?
- CollectiveRocker
- · Replies 2 ·
Calculating Equilibrium Temperature for a Solar Hot Water System
- rinchan4
- · Replies 5 ·
Calculating power in a circuit with loops
- lagwagon555
- · Replies 1 ·
Why Does Extracting Density Affect My Moment of Inertia Calculation?
- kuahji
- · Replies 2 ·
Physics Project Conservation of momentum,energy, and projectile motion
- Wilson_Serway
- · Replies 1 ·
How can multiple pulleys decrease the force needed to lift a piano?
- fattydq
- · Replies 3 ·
Calculating Force on a Tank Hatch in Water
- VelvetRebel
- · Replies 2 ·
What would friction be in this pulley system
- spectravoid
- · Replies 1 ·
Magnetic field in a infinitley long wire
- hitman0097
- · Replies 1 ·
Energy Problem involving Friction and Spring
- Chandasouk
- · Replies 3 ·
Solving for average acceleration.
- Polyrix
- · Replies 1 ·
Introductory Power/Work Problem
- jacksonpeeble
- · Replies 6 ·
What is the maximum mass that can be hung from the end of a boom?
- a.wright
- · Replies 1 ·
Find acc. given coefficient of frict. on incline slope
- shizupple
- · Replies 2 ·
What Speeds Are Safe for a Banked Curve in Wet Conditions?
- a.wright
- · Replies 1 ·
Kinematics of a Slender Bar with Constrained End Rollers
- yoamocuy
- · Replies 8 ·
How Do You Calculate the Effective Spring Constant k_eff for Springs in Series?
- ksmith159
- · Replies 1 ·
How do maple seeds spin and fall?
- havaliza
- · Replies 6 ·
What is the current through the emf in a circuit with capacitors and resistors?
- fluidistic
- · Replies 4 ·
Lensmaker's Formula: Solving for Image Distance i
- jpartdq
- · Replies 1 ·
Moment of inertia of disc with plasticine dropped onto it
- Skuzzy
- · Replies 3 ·
Normal force on 1kg mass on 30° incline with horizontal 10N force
- 1irishman
- · Replies 6 ·
Friction force incline two masses connected by a string
- konto77
- · Replies 3 ·
Which object will reach point O first?
- najima
- · Replies 12 ·
Understanding Optics: Why is 2t changed to 2tn in problem 35.54?
- Niles
- · Replies 4 ·
Uniform Circular Motion confusion.
- DavidAlan
- · Replies 4 ·
What are the units of spring constant K?
- zaga04
- · Replies 2 ·
What is the Phase Constant for a Simple Harmonic Oscillator with Given Graphs?
- foundAnAnswer
- · Replies 2 ·
Maximum distance a falling fish stretches a spring
- pedro_infante
- · Replies 6 ·
Projectile motion from 39.2 m platform with 9.8 m/s launch speed
- tw1nky62
- · Replies 2 ·
Solving Mechanics Problem: Calculate Coefficient of Friction & Work Done
- Elumalai
- · Replies 1 ·
Newtons theory of gravity : satelite orbits and ellipses
- marshall104
- · Replies 3 ·