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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Significant figures when writing measurements with uncertainty
- LCSphysicist
- · Replies 2 ·
Pressurized Line and Rigid Tank Probem
- cwill53
- · Replies 27 ·
Circuit analysis involving parallel and series conditions
- asd852
- · Replies 1 ·
The electric field between two adjacent uniformly charged hemispheres
- greg_rack
- · Replies 5 ·
Calculating air resistance for a cart rolling down a ramp
- Tar123
- · Replies 8 ·
Uniform Circular Motion: banked race track circular path
- cle102
- · Replies 2 ·
Using Matlab ode45 to solve a simple 2 body problem
- patric44
- · Replies 5 ·
Finding the Thevenin equivalent of a circuit
- asd852
- · Replies 14 ·
How do we determine whether circuit element is negative or positive?
- asd852
- · Replies 1 ·
Uniform Circular Motion on a racetrack
- cle102
- · Replies 1 ·
Torque on a current loop caused by a magnetic field
- greg_rack
- · Replies 5 ·
Converting km/hr to m/s: What is the formula?
- scotthands
- · Replies 4 ·
Converting pressure to flow rate
- Phobos
- · Replies 5 ·
Find Velocity given Force and Mass
- alexas
- · Replies 3 ·
What is the Calculation for Mass?
- blackvise43
- · Replies 8 ·
What is the Formula for Calculating Tension in Physics?
- liuquinlin
- · Replies 5 ·
Particle colliding with rotating disc: angular velocity after impact
- WonderKitten
- · Replies 4 ·
Solving the two body problem in Matlab
- patric44
- · Replies 6 ·
Finding answers to exercises in Special Relativity for the Enthusiastic Beginner
- gtguhoij
- · Replies 2 ·
Forces on a Skydiver during the initial frefall phase of the jump
- Balsam
- · Replies 4 ·
Dielectrics inside a parallel plate capacitor
- polibuda
- · Replies 1 ·
Vector cross product anti-commutative property
- greg_rack
- · Replies 9 ·
Degrees of freedom in a molecule
- LCSphysicist
- · Replies 5 ·
Masses on strings and pulleys (iWTSE.org)
- TomK
- · Replies 42 ·
Effect of Leakage on Capacitor Energy Storage
- wcjy
- · Replies 12 ·
Poynting vector and electric field
- Kaguro
- · Replies 4 ·
Thermal physics -- Converting the internal energy of argon atoms to temperature
- Kathhhriine
- · Replies 4 ·
What is force potential and how does it relate to Bernoulli's Equation?
- sarvesh0303
- · Replies 1 ·
What Is the Electrical Equivalent in Energy Conversion?
- moonelson
- · Replies 1 ·
What Is the Density of Air at a Given Temperature and Pressure?
- huybinhs
- · Replies 1 ·
What is the Final Temperature When Ice is Added to Water in an Aluminum Cup?
- hils0005
- · Replies 1 ·
What is density of magnetic field?
- boris16
- · Replies 1 ·
Is my approach to this problem correct?
- polibuda
- · Replies 9 ·
Bird on a bus -- friction problem
- quark12
- · Replies 1 ·
Determine the force in the bar CB
- ClearWhey
- · Replies 10 ·
Coriolis Force and Centrifugal Force
- arhzz
- · Replies 21 ·
I don't understand how a tension related to a torque would have this formula
- KittyCat1534
- · Replies 3 ·
Calculation of time taken for a motor to rotate an object 360 degrees
- physicsguy113
- · Replies 6 ·
Leaning pole with friction problem
- shinobi20
- · Replies 17 ·
How do I find relative velocity between myself and an airplane?
- Robloxian642
- · Replies 7 ·
Man on an Elevator -- Force Diagrams
- Lugytopo
- · Replies 39 ·
Mass with small charge sliding down a ramp
- wcjy
- · Replies 2 ·
Definition of energy level width
- Eitan Levy
- · Replies 3 ·
Find the forces in the AB, BE, ED and BC arms
- ahmetkalca
- · Replies 1 ·
Conservation of energy, centripetal acceleration, kinematics
- wcjy
- · Replies 3 ·
Moment of Inertia of a Solid Cylinder With a Wedge Removed
- cedoty1989
- · Replies 2 ·
Work function of electrons in a metal
- SQUB
- · Replies 3 ·
Extinction law -- How big is the extinction in the H-band?
- CharlesDamle
- · Replies 4 ·
Finding redshift when vacuum and matter contribute equally
- Eulalie
- · Replies 1 ·
What determines that a system carries no angular momentum?
- KittyCat1534
- · Replies 17 ·
Magnetic field due to infinite current carrying wire in the X and Y axes
- wcjy
- · Replies 11 ·
What is the Isobar Binding Energy and How Does it Affect Atom Masses?
- jjson775
- · Replies 4 ·
How to find d2 when given d1 and d, total time, and average velocity?
- orangegalaxies
- · Replies 1 ·
Conservation of angular momentum under central forces
- Saptarshi Sarkar
- · Replies 4 ·
Harmonic Oscillator With and Without Friction (mass on a spring)
- quark12
- · Replies 1 ·
Electrostatics - electric potential and field strength (dielectric)
- polibuda
- · Replies 19 ·
Lifting a survivor into a helicopter with a rope
- bolzano95
- · Replies 3 ·
Max velocity of a vibrating loud speaker membrane given sound intensity
- custner
- · Replies 4 ·
Checking units for ideal gas law calculations with temperature and mass
- Brinkley23
- · Replies 11 ·
Measure the distance to a star using magnitude and extinction
- Mikkel
- · Replies 8 ·
Find the supply voltage of a ladder circuit
- propvgvnda
- · Replies 51 ·
Why isn't mass variation considered in tape unwinding down a ramp?
- A13235378
- · Replies 7 ·
Composing a few transformations
- etotheipi
- · Replies 2 ·
Rotating body moment of inertia
- Ugnius
- · Replies 3 ·
Why do we need to equate the rate of energy of the second plate to zero?
- LCSphysicist
- · Replies 2 ·
How do I start solving this problem?
- ChrisWM
- · Replies 1 ·
Finding the magnetic field B given the vector potential A ?
- patric44
- · Replies 3 ·
Voltage developed across a cooled crystal
- etotheipi
- · Replies 6 ·
What is the reaction force between the ring and the hoop?
- Olivia Lam
- · Replies 3 ·
Find ω, the angular frequency of oscillation of the object
- joelkato1605
- · Replies 4 ·
Relation between magnetic and electric fields
- tboyers
- · Replies 13 ·
Planetary motion in a viscous medium
- Leo Liu
- · Replies 5 ·
Is the solution correct? (forces between 3 charged particles)
- PhysicsTeacher159
- · Replies 6 ·
If internal forces balance the applied force, what causes deformation?
- baldbrain
- · Replies 7 ·
Electron accelerating to 200 m/s in 3 minutes
- Robloxian642
- · Replies 6 ·
Ball floating in two-beaker fluid density system
- bw519
- · Replies 7 ·
Solving for Time to Reach Ground: Calculating Velocity of Sound over 50m
- Robloxian642
- · Replies 2 ·
Problem Involving Refraction Of Light
- Aristocrat
- · Replies 3 ·
A simple system of two masses and two pulleys
- adamm150
- · Replies 5 ·
Temperature removed from entropy integral for heated water
- LCSphysicist
- · Replies 9 ·
Which of the 2 metals is the magnet
- Despot
- · Replies 9 ·
Quantum Uncertainty Questions (HUP)
- vintagelover007
- · Replies 3 ·
Electrodynamics problem -- Calculating the resistance of ocean water
- LCSphysicist
- · Replies 11 ·
Why mechanical energy changes when clay sticks to an oscillating block
- Leo Liu
- · Replies 14 ·
Why does the hoop have lower moment of inertia than the cylinder?
- cal35182
- · Replies 3 ·
Sign problem in the rocket equation
- Leo Liu
- · Replies 10 ·
Energy Dissipated: Calculate Rate in Joules/sec
- lexia
- · Replies 1 ·
Understanding Short Circuit Current Paths in Electrical Circuits
- madafo3435
- · Replies 4 ·
Thermodynamics and adiabatic lines -- Prove this statement
- LCSphysicist
- · Replies 2 ·
Proving the differential of daylight hours with latitude
- CaptainAntiFunn
- · Replies 1 ·
What is the Correct Equation for Velocity on a Curved Surface?
- NTesla
- · Replies 27 ·
Thermodynamics: work done on the atmosphere by an expanding gas
- LCSphysicist
- · Replies 2 ·
Particle in equilibrium (balancing forces on an object on an incline)
- Justin_Lahey
- · Replies 5 ·
Question related to a gamma spectrometer
- patric44
- · Replies 14 ·
Uncertainty of the Best Value from a Multiple-Trial Experiment
- WannaLearnPhysics
- · Replies 6 ·
Mass of vapor per hour for heating water
- songoku
- · Replies 2 ·
Calculating the uncertainty with this measurement
- LCSphysicist
- · Replies 3 ·
Do vector components always form right angles?
- ianc1339
- · Replies 5 ·
Why Does Light Form a Cone When Refracted in a Swimming Pool?
- joelkato1605
- · Replies 10 ·
Spherical shells (inner conducting and outer nonconducting)
- goohu
- · Replies 11 ·