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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Calculating Energy Output of the Sun on Washington State
- jpartdq
- · Replies 3 ·
Pendulum Experiment - time period and length of string
- physics-chris
- · Replies 1 ·
Gauss's Law Electricity: Electric Field Between 2 Sheets
- ryanmcf10
- · Replies 1 ·
Diameter of the football players' piston?
- benedict9999
- · Replies 4 ·
Instructor's Algebra Paradox? : How far does a projectile go up a ramp?
- RoganSarine
- · Replies 5 ·
Trajectory of a squirt of water to hit a fly
- RoganSarine
- · Replies 17 ·
Horizontal veolocity given vertical velocity and angle
- IAmSparticus
- · Replies 1 ·
Horizontal and vertical velocity components
- IAmSparticus
- · Replies 1 ·
How Do You Calculate the Angle in a Spinning Mass Problem?
- Zhalfirin88
- · Replies 7 ·
Calculating Marble's Initial Height Using Projectile Motion Equations
- IAmSparticus
- · Replies 1 ·
How Is Electric Flux Calculated Through a Cube Face with Multiple Charges?
- tag16
- · Replies 1 ·
Rolling ball down a slope, how to find final velocity?
- woodie37
- · Replies 2 ·
Calculating Energy Stored in a Two-Spring System
- Skuzzy
- · Replies 2 ·
What is the Average Angular Acceleration of a Fan?
- Ion1776
- · Replies 1 ·
Dimensional analysis, I'm kinda lost
- coasterguy
- · Replies 1 ·
Couple of relative velocity problems.
- Raheelp
- · Replies 1 ·
Force on passenger from airbag during car collision
- tjbateh
- · Replies 1 ·
Solving for Tension in Elevator Cable: 2300 kg, 50 m, 12 m/s
- tjbateh
- · Replies 1 ·
What Is The Complete Formula Of A Lever?
- EnquiringMind
- · Replies 3 ·
Solve 2D Motion Homework: Throw Football 196.6m at 25°
- IAmSparticus
- · Replies 1 ·
How Fast Must a Volcanic Bomb Travel to Reach a Certain Point?
- kara
- · Replies 3 ·
Applications of the Equations of Kinematics for Constant Acceleration
- jacksonpeeble
- · Replies 2 ·
When and how do you integrate electric field and flux equations?
- Josh930
- · Replies 1 ·
How do I locate the centroid and the center of gravity of a square pyramid?
- physicshelp75
- · Replies 6 ·
Deceleration due to Frictional Force
- Esran
- · Replies 20 ·
Again an electric potential question ?
- Fazza3_uae
- · Replies 7 ·
How to find current of resistor in complex circuit?
- Schoomy
- · Replies 5 ·
Two-loop circuit using Kirchoff's Laws
- HEYJOHN
- · Replies 2 ·
Solving the Truck Stopping Distance Problem
- quietrain
- · Replies 7 ·
What Is the Minimum Speed Required for a Car to Jump Over Eight Cars?
- fattydq
- · Replies 1 ·
Car accelerates 4.0 m/s² for 6.0 s, coasts 1.9 s, then decelerates at 3.0 m/s²
- kingpin29
- · Replies 1 ·
A Different kind of kinematics problem
- numberjuan412
- · Replies 3 ·
Vector components with unknowns, ultimately adding to zero.
- Lassitude
- · Replies 10 ·
Car Runs Out of Gas on 9.0 Slope - What Happens Next?
- grizzly44
- · Replies 3 ·
Force on a Frictionless Surface
- tjbateh
- · Replies 2 ·
How Does Projectile Motion Determine Final Velocity?
- k2var2002
- · Replies 12 ·
Trajectory of a Baseball: Will it Clear the Fence?
- RoganSarine
- · Replies 2 ·
Solving Pulley & Block Problems: Acceleration of A
- chenying
- · Replies 1 ·
Calculating Tension in Cable Winch BD - Drawing Included
- pigmy02
- · Replies 1 ·
Find electric field of a spherical shell
- unteng10
- · Replies 4 ·
Particle around pivot in uniform E
- TwoTruths
- · Replies 2 ·
What are the forces acting on the crate on a frictionless ramp?
- tjbateh
- · Replies 8 ·
What causes a change in wind direction when it hits a sail?
- WishFish
- · Replies 4 ·
Why lift curves go through origin for some airfoils
- heinekenisnic
- · Replies 1 ·
How Do You Calculate the Tension in a Chandelier's Cable?
- gb14
- · Replies 1 ·
How Do I Solve This Complex Square Root Equation?
- snoothie
- · Replies 2 ·
Net Charge of Spherical Shell +Q at Center
- tag16
- · Replies 11 ·
Finding min/max force (net force sliding friction problem)
- ultimateman
- · Replies 3 ·
Motorist reaction time to avoid deer 48 m ahead at 14 m/s
- malta
- · Replies 1 ·
Basic Motion Graphs (velocity-time)
- PolyFX
- · Replies 1 ·
How to measure circular displacement?
- TwoTruths
- · Replies 3 ·
What causes a 'simple pendulum' to stop?
- student321
- · Replies 26 ·
Initial upward acceleration in a pulley problem
- NinjaPenguin
- · Replies 2 ·
How Can Angular Momentum Principles Solve Disk Rotation Problems?
- tanglx61
- · Replies 1 ·
What is the role of A+B+C in finding vector components?
- White_Noise
- · Replies 2 ·
My first week in hs physics and my teacher hasn't taught a thing
- natabong
- · Replies 4 ·
Calculating Drop Timing for Airdrop Supplies in Wilderness
- physicsquest
- · Replies 2 ·
Ranking the force of point charges problem
- macaco
- · Replies 5 ·
Projectile Motion marble Problem
- LoveandHate
- · Replies 4 ·
The Energy Contained in a FunyunI must be mistaken?
- Rhine720
- · Replies 4 ·
How Do You Derive the Equations of Motion in Physics?
- kevinli
- · Replies 2 ·
What is the magnitude of the electric field between the two plates?
- tag16
- · Replies 4 ·
Finding Speed and Angle of Projectile Trajectory
- darklich21
- · Replies 2 ·
How Can You Calculate the Total Equivalent Resistance in a Circuit?
- HEYJOHN
- · Replies 1 ·
The Heating of Nichrome Wire in a toaster
- gc33550
- · Replies 6 ·
Force exerted on passenger by airbag in collision
- tjbateh
- · Replies 2 ·
Intitial velocity from given angle and distance
- morganm725
- · Replies 2 ·
Apparent weight/elevator problem
- stressedout09
- · Replies 3 ·
Finding angular velocity of a massive bar in coupled spring-mass system
- JohnSimpson
- · Replies 2 ·
Physics Lab question velocity/Δt simple
- munchy35
- · Replies 2 ·
Rocket Velocity Calculation for Different Time Intervals
- elpermic
- · Replies 7 ·
Angular Acceleration - What am I doing wrong?
- ctamasi
- · Replies 2 ·
Why do larger raindrops reach higher terminal velocity?
- tommyjohn
- · Replies 9 ·
What is the magnitude of the body's acceleration?
- sponsoredwalk
- · Replies 3 ·
Distance from points to plane using normal vector
- Damascus Road
- · Replies 1 ·
How Far North Does Carlos Travel in 10 Minutes?
- gbedenba
- · Replies 11 ·
Equilibrium temperature for brass shot dropped in water with aluminum cup
- Damien20
- · Replies 1 ·
Differences between spectra of incandescent bulbs, fluorescent tubes, and sunlight
- Precursor
- · Replies 1 ·
Finding mass in a quanity of heat problem
- Damien20
- · Replies 1 ·
Distance covered by a moving object versus friction in an inclined plane
- ffrancis
- · Replies 1 ·
Calculate the polarizability a(lpha) of atomic hydrogen in terms of R
- cfung
- · Replies 1 ·
Two force and motion practice test questions
- flav12
- · Replies 1 ·
Brick Falling Off a Rising Pallet
- alandry06
- · Replies 7 ·
Simple Harmonic Motion: Finding Frequency and Potential Energy Function
- briteliner
- · Replies 8 ·
Finding the Position of a Sample Using Microscope Magnification
- estanton
- · Replies 2 ·
Kinematics - Constant Acceleration
- JG89
- · Replies 10 ·
How Is Collision Speed Calculated in a Supermarket Parking Lot Incident?
- melmel7880
- · Replies 1 ·
I really can't understand uncertainty
- Shing
- · Replies 1 ·
How to define electric charge in one sentence for a quiz
- Surreal Ike
- · Replies 9 ·
Confusing projectile motion problem?
- bronxbomber91
- · Replies 1 ·
Calculating Horizontal Speed of a Stealth Bomber
- jamesc3
- · Replies 1 ·
What is the height of the smaller model in this statue scaling problem?
- Payne0511
- · Replies 1 ·
Kinematics- Child running down a hill
- panozg
- · Replies 1 ·
Coulomb's Law lab , , it do tommorrow
- Suy
- · Replies 16 ·
Finding maximum height of a ball thrown with initial velocity <5,8,0> m/s
- Lemniscate
- · Replies 8 ·
Laws of Motion w/ Friction - Two Forces on Two Boxes
- Refrost
- · Replies 1 ·
Solving for x-Displacement of a Rolling Ball on an Inclined Track
- goodz
- · Replies 6 ·
Formula for a two-part constant-acceleration problem
- neutron star
- · Replies 6 ·
Define Newton's 1st, 2nd, and 3rd laws
- Tale
- · Replies 3 ·