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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Wes's Big Exam Thread - 3 Hours of Physics Fun
- Wes72
- · Replies 9 ·
Just translating the question.
- ekinnike
- · Replies 2 ·
A rather challeging circuit problem
- DaMastaofFisix
- · Replies 3 ·
What Is the Maximum Velocity of an Object in Harmonic Motion?
- chazgurl4life
- · Replies 2 ·
How Do You Calculate Velocity at Equilibrium in Simple Harmonic Motion?
- chazgurl4life
- · Replies 3 ·
Dynamical Magnetism Faradays Law
- moo5003
- · Replies 2 ·
Two Doppler Shifts: 800Hz to 126Hz
- endeavor
- · Replies 3 ·
How Does Damping Force Relate to Velocity in a Pendulum?
- jrm2002
- · Replies 1 ·
Magnetic Field Force: What Affects It?
- gvntr52
- · Replies 1 ·
My first post, my first question
- ekinnike
- · Replies 4 ·
Is there an electric or magnetic field acting on this electron
- gvntr52
- · Replies 1 ·
Solving a Physics Problem on the "Zipper" Ride
- Supernerd2004
- · Replies 8 ·
How to Find Work Done by an Ideal Gas with Given Conditions?
- willydavidjr
- · Replies 2 ·
Why do we feel heavier or lighter at differenthis parts of the lift?
- animerawkz
- · Replies 1 ·
How Does Newton's Shell Theorem Affect Gravitational Force on Earth?
- adp5025
- · Replies 1 ·
Angular momentum and starship enterprise
- syang9
- · Replies 3 ·
Calculating Buoyant Force of Ice to Find Mass - No Hints
- cscott
- · Replies 7 ·
Question regarding pressure equ.
- cscott
- · Replies 1 ·
Circular motion-centripetal acceleration
- allok
- · Replies 2 ·
Does light from a point source spread out?
- Alvin
- · Replies 7 ·
Wave length of a transverse wave
- ness9660
- · Replies 5 ·
How to Fill a 7.2m Pool in 2 Hours
- cscott
- · Replies 6 ·
Thermodynamics problem - filling a bottle from reservoir
- Petrushka
- · Replies 3 ·
Help with thermodynamics question please
- pureouchies4717
- · Replies 3 ·
Find Capacitance: Rearranging the Capacitance Equation V=Vo exp(-t/RC)
- dan greig
- · Replies 8 ·
Understanding the E Field Observed by a Stationary Observer
- Gott_ist_tot
- · Replies 2 ·
Charging a parallel plate capacitor
- al_201314
- · Replies 5 ·
Superimposed Simple Harmonic Motions: Resultant Time Period Analysis
- the_terminator
- · Replies 4 ·
Diodes and EE - Grasping the Basics
- ness9660
- · Replies 7 ·
Solving Mechanics Problem: Ball, String, Fly, Velocity
- grief
- · Replies 1 ·
Understanding Damping Coefficients in Vibrational Systems
- jrm2002
- · Replies 2 ·
Frequency Equation: Help Finding an Equation Incorporating Tube Diameter
- myshiee
- · Replies 3 ·
How Does Friction Affect the Final Speed of a Crate?
- smbascug
- · Replies 6 ·
A Lesson on Lorentz Contraction
- Tido611
- · Replies 4 ·
How Is Capacitor Charge and Energy Calculated and Why Is There a Difference?
- dan greig
- · Replies 8 ·
Solving Sound Intensities - Hearing Threshold in W/m^2
- Huskies213
- · Replies 3 ·
Expand the quadratic term for resistance equation
- amcavoy
- · Replies 2 ·
Sound wave question (dealing with a speaker)
- nophun6
- · Replies 1 ·
A few questions - I want to make sure I did it right
- nyclio
- · Replies 14 ·
Confirming Convection: Heat Escape Through Unlidded Containers
- gem0688
- · Replies 2 ·
Understanding Automatic Door Systems: Photodiodes & Lasers
- mindagap
- · Replies 1 ·
Polarization Reflection question
- BobbyBobbyBob
- · Replies 1 ·
Calculating Distance from Sound and Light Speeds
- kris24tf
- · Replies 3 ·
Charged Particle in Magnetic Field
- spoonthrower
- · Replies 5 ·
Calculate Density of Oil and Water
- zenmasterwombles
- · Replies 2 ·
Blowing across a coke bottle (sound physics)
- nophun6
- · Replies 4 ·
Solving a Focal Length Puzzle: Find the Image Location and Size
- lilkrazyrae
- · Replies 2 ·
SL Atmospheric Pressure Calculation
- zenmasterwombles
- · Replies 3 ·
How do you find the angle of polarization? What is the formula?
- lilkrazyrae
- · Replies 6 ·
What are the steps for solving Maxwell's laws assignment?
- MrJunkpile
- · Replies 3 ·
20.0-mH inductor potential energy problem
- boomboompoop
- · Replies 3 ·
Terminal velocity in finite time
- cscott
- · Replies 3 ·
AC Theory Question: Transformers
- Ryan231
- · Replies 2 ·
Efficiency Calculations for Mechanical Systems
- kaity
- · Replies 5 ·
What is the Relationship Between Radius and Length of Coiled Tape?
- r4nd0m
- · Replies 7 ·
Conservation (energy and momentum) problem
- N_L_
- · Replies 1 ·
Listing all forces on someone swimming in a pool
- sauri
- · Replies 9 ·
Simple Pendulum lab not so simple
- NIZBIT
- · Replies 9 ·
How Do You Calculate Work Done by an Expanding Gas?
- brilyn
- · Replies 1 ·
Fraction Of The Intensity Incident
- lilkrazyrae
- · Replies 1 ·
Angular Momentum: Formula Comparison & Usage
- grief
- · Replies 4 ·
Exam III Practice Problems (liquids and pressures)
- Alt+F4
- · Replies 97 ·
I don't understand this question
- 6ies
- · Replies 2 ·
How fast do X rays travel in a vacuum?
- kevinlikesphysics
- · Replies 1 ·
Calculate the position of the image
- Pseudo Statistic
- · Replies 1 ·
What Is the Carnot Efficiency Formula for Engine Calculations?
- brilyn
- · Replies 1 ·
Another force and acceleration problem
- oooo
- · Replies 2 ·
Body's Acceleration: Calculating Acceleration on Fixed Platform
- willydavidjr
- · Replies 14 ·
Calculating Cumulative Time Changes over 20 Centuries
- Fletcher
- · Replies 2 ·
Why Is My Calculation of Acceleration Marked Wrong?
- oooo
- · Replies 3 ·
How to Calculate the Initial Velocity for Two Balls to Land Simultaneously?
- xarmenx
- · Replies 3 ·
LC circuit and fixed inductance problem
- Punchlinegirl
- · Replies 1 ·
Multirange Ammeter and magnitudes of the resistances
- ovoleg
- · Replies 2 ·
The Hot Resistance Of the filament
- Sullitp
- · Replies 12 ·
How Do Two Cars Accelerating Towards Each Other Meet?
- sekishi
- · Replies 4 ·
Rotational Kinematics of Running
- MetalCut
- · Replies 3 ·
Particle Elastic Collision problem
- M98Ranger
- · Replies 3 ·
Can you help with these sound wave problems?
- lavafrog
- · Replies 4 ·
Solving for Rotational Kinetic Energy with Angular Speed and Masses
- M98Ranger
- · Replies 5 ·
What is wronge with this picture?
- Longstreet
- · Replies 5 ·
Troubleshooting a Complex Circuit Problem
- Gott_ist_tot
- · Replies 1 ·
LC Circuit Oscillations: Check My Work and Find Energy and Frequency Details
- davegillmour
- · Replies 1 ·
How Can You Determine the Elastic Limit of a Spring Without Causing Damage?
- foofoo
- · Replies 1 ·
Calculating Frequency and Wavelength of Sound Waves in Water and Air
- brokentruce
- · Replies 11 ·
Car Headlight Resolution: Solving for Distance and Angle Using Physics
- wayneo
- · Replies 14 ·
Hat current is needed to provide a modest 40 kN force? plug and chug
- mr_coffee
- · Replies 2 ·
What is the angular width of the central maximum?
- wayneo
- · Replies 7 ·
How do I connect circuit elements in parallel using breadboards?
- Benny
- · Replies 2 ·
Discover the Essential Orbital Velocity for Stable Earth Satellite Orbit
- mcolem
- · Replies 6 ·
Electric Potential and Kinematics
- Elysium
- · Replies 5 ·
Inelastic Collision: Conservation Laws and Calculations
- terry
- · Replies 9 ·
How to Calculate Capacitance in a Parallel Configuration?
- Kenny Lee
- · Replies 4 ·
How Do You Calculate the Distance Between Two Moving Ships Using Vectors?
- turnstile
- · Replies 3 ·
Why Does Intensity Diminish at the Ends in Young's Double Slit Experiment?
- sparsh
- · Replies 1 ·
Question about the Boltzmann distribution in combination with NMR
- Lisa...
- · Replies 2 ·
Im having trouble with a simple question (simple thermodynamics)
- pureouchies4717
- · Replies 3 ·
Solving Current-Voltage Characteristic of P-N Diodes with ln i = ln i˚ + eV/2kT
- tallin_grady
- · Replies 1 ·
A Simple Pendulum: Concentrating Weight on a String or Rod
- jrm2002
- · Replies 1 ·
How much lift is required to fly at level unaccelerated flight
- juelz
- · Replies 8 ·
Masses hanging on massless meter stick problem
- FlipStyle1308
- · Replies 17 ·