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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Two horses pulling a barge at 60° angle
- reganw
- · Replies 6 ·
Calculating Voltage Drop in an AC Circuit with a High Power Supply and Motor
- Sarah88
- · Replies 2 ·
Find the magnetic field at the center of a rectangle
- vande060
- · Replies 2 ·
Converting nanometers to meters
- iphone26
- · Replies 3 ·
Moment of inertia of thick cylindrical ring with inner radius 29.0cm and thickness 2.8cm
- blackbyron
- · Replies 5 ·
Rotational Motion with a Suspended Hinge
- MF92
- · Replies 2 ·
Did I get it right by coincidence?
- flyingpig
- · Replies 16 ·
Why no refraction at the curved side in Snell's law lab
- uchicago2012
- · Replies 1 ·
Calculating Impedance in an RLC circuit
- lpau001
- · Replies 3 ·
Showing Superposition Principle with Time-Dependent Schrödinger Equation
- blueyellow
- · Replies 1 ·
Addition of velocities. relativity.
- night
- · Replies 1 ·
Conservation of relativistic energy
- stepheng123
- · Replies 6 ·
Moment of Inertia for Three Point Masses
- atlantic
- · Replies 1 ·
What Is the Power Series and Interval of Convergence for f(x) = x/(x^2 + 1)?
- vande060
- · Replies 2 ·
Find F(x) when v(x) is given. Chain rule?
- mg11
- · Replies 10 ·
How Far Does a 500 m/s Projectile Travel Horizontally at -50m Elevation?
- LittleWing
- · Replies 3 ·
Electron accelerated through a potential difference
- seanc12
- · Replies 2 ·
Compressed spring on the ceiling.
- mistabry
- · Replies 1 ·
Velocity vs. Time with Uniform Acceleration and Braking Rate
- leejqs
- · Replies 7 ·
How is the Relative Angle Between Two Polarizers Determined?
- tica86
- · Replies 4 ·
Conservation of Momentum of radioactive mass
- Peter G.
- · Replies 1 ·
Simple definition of tension for a science fair project
- Benenmin
- · Replies 1 ·
Mass of stars in a binary system from period and orbital speed
- joeyjane
- · Replies 7 ·
Potential Energy of Elastic Band
- ppkjref
- · Replies 4 ·
Elastic potential energy of a stretched band launched horizontally
- darksoulzero
- · Replies 4 ·
Child sliding down playground slide with friction
- dorkymichelle
- · Replies 4 ·
Understanding Thin Film Interference
- jwxie
- · Replies 2 ·
Magnetic force, coefficient of friction, forces in equilibrium
- wushumaster
- · Replies 1 ·
Average intensity problem? related to EM waves?
- waterbottle12
- · Replies 1 ·
Find work given force equation in component form
- xcgirl
- · Replies 1 ·
Calculating Distance Traveled with Kinetic Friction (Coefficient 0.2)
- iRamie
- · Replies 5 ·
Solving Ten-Pin Bowling Physics with Proportional Signs
- moobs93
- · Replies 1 ·
Air speed through trachea during a cough
- Goatsenator
- · Replies 1 ·
Converting arcseconds to radians for angular size calculation
- leonne
- · Replies 4 ·
Force on player catching a rebounding handball
- LBP
- · Replies 1 ·
Emf of a single loop wire around a solenoid
- imatreyu
- · Replies 4 ·
Supermeshes and Dependent Current Sources: Determining the Constraint EQ
- Saladsamurai
- · Replies 2 ·
Understanding Forces and Motion in a Translating and Rotating Ring
- gator286
- · Replies 1 ·
Magnetic field from a sliding rod in a square loop using Ampere's law
- vande060
- · Replies 14 ·
Finding the inductor value with a frequency range
- cummi3em
- · Replies 4 ·
Magnetic field from an infinite sheet of charge
- gonzalesdp
- · Replies 1 ·
Beat frequency, find intensity at distance from sources?
- Inertigratus
- · Replies 2 ·
Rotational energy convservation probelm, inertia
- Sonorus
- · Replies 2 ·
Magnetic field due to an uneven current loop
- hiigaranace
- · Replies 1 ·
Pull a rectangular loop through a magnetic field
- xzibition8612
- · Replies 1 ·
Why does mesh analysis with a current source give the wrong answer in AC circuits?
- Saladsamurai
- · Replies 8 ·
Infinite Square-Well Potential Problem
- interxavier
- · Replies 5 ·
How Does Radon-222 Impact Indoor Air Quality?
- figureskater
- · Replies 1 ·
Solve Vertical Circles: Force, Velocity, Acceleration, Mass, Reaction
- RJWills
- · Replies 4 ·
Induced Electric Field work done
- zorro
- · Replies 8 ·
Why can't different wave equations form standing waves?
- Abhishekdas
- · Replies 9 ·
How Do Wire Characteristics Affect the Notes They Emit?
- Abhishekdas
- · Replies 7 ·
What Coefficient of Friction Keeps a Crate from Sliding on a Decelerating Truck?
- LittleWing
- · Replies 1 ·
How to Calculate Tension in Wires of Different Lengths?
- TerryC
- · Replies 2 ·
Current density problem - stuck on solution
- j-lee00
- · Replies 2 ·
What is the Terminal Velocity of an Object Subjected to Drag Force?
- Yapper
- · Replies 6 ·
Woman's weight at twice Earth's radius
- babyjachy
- · Replies 24 ·
What is the nature of entropy and its relationship to equilibrium?
- funcosed
- · Replies 1 ·
Ice and water mixture heated by steam to 25°C
- elin0523
- · Replies 1 ·
Planck's Law/ number of photons
- CINA
- · Replies 1 ·
How to Calculate Fluid Height in a U-Tube Using Bernoulli's Equation
- sarahmf
- · Replies 4 ·
How to Calculate Power in a Physics Problem?
- dorkymichelle
- · Replies 3 ·
Finding greatest speed of 0.50-kg block on spring with 0.12 J total energy
- dorkymichelle
- · Replies 1 ·
Proving x'' + ω²r = 0 and y'' + ω²r = 0 for circular motion
- Stochastic13
- · Replies 8 ·
12 energy homework questions: bowling swing, work, power, pole vault
- fphysicsclass
- · Replies 35 ·
Question on conversions when figuring out the pressure of a fluid
- avolaster
- · Replies 1 ·
Given mass, force, and acceleration solve for the coefficient of friction
- michaelstanle
- · Replies 1 ·
Unwinding a Light String from a Spool
- artsim2011
- · Replies 6 ·
Appliance in the bath - Curious
- pat666
- · Replies 2 ·
How Does Collision Timing Affect the Force Experienced?
- Peter G.
- · Replies 2 ·
How High Will the Ball Shoot Above the Water?
- fernancb
- · Replies 1 ·
Ranking velocities of particles in uniform magnetic field
- Linus Pauling
- · Replies 4 ·
Two-mass pulley system with rotating disk
- km41
- · Replies 10 ·
Sphere sits at bottom of milk container, find mass?
- tigers4
- · Replies 1 ·
Finding theta in a ramp problem, given velocity, distance, accelration,and mu k,
- trollphysics
- · Replies 9 ·
Problem about boundries in this solve of quantum problem
- opeth_35
- · Replies 1 ·
Damn it, PF again erase all of my work
- flyingpig
- · Replies 3 ·
Calculating Rise of Mercury in U-tube with Water
- tigers4
- · Replies 1 ·
For those who have this textbook.
- DannyPhysika
- · Replies 5 ·
Thermal energy of a gas in a box
- appplejack
- · Replies 1 ·
Special relativity: Simple Lorentz transformation question
- bojo
- · Replies 4 ·
Hollow iron spherical shell submerged in water, find the inner diameter
- tigers4
- · Replies 9 ·
Curent and ohm's law-potential difference
- smoics
- · Replies 5 ·
Inflatable Boat Capacity 420L - Load Capacity Calculation
- chawki
- · Replies 5 ·
Calculating Revolutions with Constant Force: Solving for Angular Velocity
- blackbyron
- · Replies 2 ·
Questions about Resistance, Capacitors in Circuits
- mneox
- · Replies 1 ·
Finding voltage drop across 2k ohm resistor using voltage division
- pat666
- · Replies 6 ·
How do you work out the reaction distance?
- littlemissbee
- · Replies 1 ·
Current and Ohm's Law-filament diameter
- smoics
- · Replies 2 ·
Force required down an incline.
- Gheret
- · Replies 1 ·
Spring, blocks and conservation of energy
- zorro
- · Replies 8 ·
Sliding on Sphere with Friction
- buttermellow7
- · Replies 1 ·
How Is Magnification Calculated with Two Thin Lenses?
- avelon
- · Replies 7 ·
Block dropped onto spring: finding maximum compression
- dorkymichelle
- · Replies 3 ·
New to physics and with Newtons laws
- smalltylynch
- · Replies 1 ·
Have I done my working out correctly and used the right formulae?
- Elihu5991
- · Replies 3 ·
Conservation of Angular Momentum of particle
- Versaiteis
- · Replies 3 ·
Find change in kinetic energy using work?
- dorkymichelle
- · Replies 3 ·
KK Prob 1.14 - Angular Acceleration of a Rolling Drum
- veezbo
- · Replies 4 ·
Energy of Capacitor in RC Circuit
- buttermellow7
- · Replies 3 ·