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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Newton's 2nd Law - Rotation, Torque, Disk
- VitaX
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Could someone please explain to me the integral used to compute work done?
- WahooMan
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No idea on how to do this problem
- dowz0r
- · Replies 1 ·
Translational Kinetic energy, am i squaring vectors correctly?
- Kibbel
- · Replies 2 ·
Solve Force Equation: Steps & Explanation to Get .83N
- dowz0r
- · Replies 2 ·
Roller Coaster Problem Help NEEDED
- FahimP
- · Replies 1 ·
Acceleration of Cylinder's Center of Mass (Due 9AM)
- bmoore509
- · Replies 1 ·
Where Can I Find Reliable Scientific Quotes for My Big Bang Theory Coursework?
- echelon
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Find magnitude of the force of tension?
- TLink11
- · Replies 1 ·
Converting angual velocity to linear velocity
- crybllrd
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Mutual inductance of a coil and straight wire
- Trogdor27
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Calculating Forces on a Crate Moving up a Ramp
- MysticDude
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Finding the displacement of a non right triangle?
- Fasoolia
- · Replies 7 ·
Calculating Braking Force for a Moving Car
- Jyote25
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Hanging Mass Connected to Mass on Smooth Table.
- Student3.41
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How Does a Bullet Impact Affect the Angular Speed of a Pivoted Stick?
- randyp92
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Analyzing x/t Graph - Accelerations & Inflections
- dazedy
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Finding the Center of Mass in Equilibrium
- smray7
- · Replies 5 ·
Distance between copper atoms in cubic crystal lattice
- Mugen112
- · Replies 2 ·
Find Out My Mistake: Comparing 2 Approaches to Find Spring Extension
- zorro
- · Replies 15 ·
Finding tension in a cable of a accelerating lift
- Sleve123
- · Replies 6 ·
Lifting an Elephant with Hydraulics: A Physics Puzzle
- kikko
- · Replies 3 ·
Missing something (Newtons law)
- pinsky
- · Replies 4 ·
Minimum Initial Speed for Complete Circular Loop in Inelastic Collision
- anubis01
- · Replies 5 ·
Space Shuttle Lift Off: Acceleration and Time Calculations for Homework
- Kryslynn
- · Replies 2 ·
Electric Charge and Electric Field Problem
- lawk
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Capacitor and Resistance in a Series Circuit: Effects on Ammeter Reading?
- Peter G.
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Acceleration using kinetic friction
- joedozzi
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Find Point P2 in Space Given Data on P1 and P2
- shininglight
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Which Ring Glides Farther? Explaining the Physics
- zoki85
- · Replies 18 ·
Kinematics - Can the car avoid the moose
- k790
- · Replies 1 ·
Two slit interference question dont know how to begin
- Dars
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Solving for time when delta x=0?
- atypical
- · Replies 5 ·
How Do Circuit Currents Distribute in Complex Networks?
- Learnphysics
- · Replies 6 ·
How long to reach the speed of light?
- Pragz
- · Replies 4 ·
Coefficient of static friction?
- kselanders
- · Replies 1 ·
Calculating Focal Length of a Drop of Water
- thereddevils
- · Replies 3 ·
Simple wuestion about the sign(+/-) in a momentum conservation problem
- vande060
- · Replies 1 ·
Understanding Relative Acceleration in Inertial Frames
- Dorothy Weglend
- · Replies 21 ·
Quick question about work and forces(incline plane)
- vande060
- · Replies 3 ·
What is the relationship between potential and kinetic energy?
- Chann
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Max Expansion of Block on Spring Connected to Electric Field
- bzaher
- · Replies 10 ·
Carnot Refrigerator Homework: Coeff of Performance, Work & Heat
- dragon162
- · Replies 4 ·
Magnetic fields, lorentz force
- popo902
- · Replies 1 ·
Projectile Launching Problem. Solve with kinematics
- DeerHunter
- · Replies 4 ·
Box slides down incline, air resistance does work. Find Velocity.
- EroAlchemist
- · Replies 2 ·
Finding the Ɛ and r of a cell from a graph
- shafi25
- · Replies 2 ·
What is Energy? - Unpacking Hard Definitions
- I Like Pi
- · Replies 4 ·
Calculating Time Constant and Effective Resistance for a Parallel RC Circuit
- galoisien
- · Replies 6 ·
Capacitor in parallel with resistor
- galoisien
- · Replies 2 ·
Calcuate Elastic Modulus of metal cable
- EroAlchemist
- · Replies 2 ·
Proof: x is irrational => sqrt(x) is irrational
- mattmns
- · Replies 3 ·
Strange Result of Error Calculation
- Lunar_Lander
- · Replies 2 ·
Find I: Solving Electrical Circuits
- cdotter
- · Replies 8 ·
Equation or semi-axes of the ellipse
- arkkis
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Mass Distribution: Polar Icecaps Melting & Day Length
- Jonathan Teas
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How can we calculate the power output of a hummingbird's flight?
- Raziel2701
- · Replies 2 ·
Spinning Bike Wheel Direction: Answer 2
- bmoore509
- · Replies 25 ·
Heat Transfer - Conduction and Radiation
- sinthreck
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Conservation of Energy, Work done on a System by an External Force
- Snomann92
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What Is the % Error in the Density of a Metal Bar?
- Phys.ics
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Simple Pulley Problem: Finding Tension and Acceleration for Two Connected Blocks
- travikk
- · Replies 3 ·
Understanding Friction: Solving for Forces on Boxes A and B
- IvaNMK
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Equation for Satellite in geosynchronous oribt
- emerica1254
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Moment of Inertia (not through symmetry axis)
- sterling32157
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What is the power output of the heat engine?
- dragon162
- · Replies 1 ·
Classical Mechanics collission particles
- matt222
- · Replies 7 ·
Solving SAT Physics: Momentum of Block Starting from Rest at 5s
- spyroarcher
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How can the tension in a wire change on either side of a pulley?
- tey
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What are the equations for static and kinetic friction?
- homevolend
- · Replies 1 ·
Black holes/gravitational attraction
- Jonathan Teas
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Vertical distance of mass shot from a compressed spring.
- howsockgothap
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Thermodynamics: Cyclic Processes
- Archy
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Coffee Filter Lab: Finding Air Resistance & Terminal Velocity
- Jonathen
- · Replies 1 ·
How Do You Calculate the Kinetic Energy of a Roller Coaster?
- anna sung
- · Replies 5 ·
Circular Motion of ball tension
- Nytrox
- · Replies 5 ·
Momentum and energy two sled questions for physics
- skuller
- · Replies 3 ·
Rotational Dynamics of a plank of mass
- jgens
- · Replies 5 ·
Finding relative speed of space shuttle
- huybinhs
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Does Point A Oscillate in Simple Harmonic Motion with a Wave?
- smithj1990
- · Replies 4 ·
Non Uniform Circular Motion Problem
- moneenfan
- · Replies 3 ·
Concepts of work and kinetic energy
- pb23me
- · Replies 6 ·
Laws of conservation of mass (roller coaster) work and mechanical energy
- anna sung
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Finding amplitude of SHM with a theta vs time graph
- tdoyzz
- · Replies 4 ·
Resistance of a capacitor and inductor in a dc circuit
- orecets
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How Do You Calculate Net Force from Multiple Vector Forces?
- anna sung
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Solving h=1/2gt^2: Questions Explained
- atypical
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How to Calculate Rotational Kinematics for a Moving Bicycle?
- ScienceGirl90
- · Replies 1 ·
Conservation of angular momentum, stuck on a problem
- yodachoda87
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Rotational motion of a high speed flywheel.
- graustet
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Magnitude of the torque about the rotation axis at an instant
- pcml100
- · Replies 8 ·
Gr. 12 Energy Problem - Pulling a Wagon
- Deceit
- · Replies 4 ·
Gamma radiation sorce sheilding
- taylor.simon
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What is the Angular Momentum of the System After a Collision?
- bmoore509
- · Replies 2 ·
Help Needed: Solving Homework Equations Without Enough Variables
- krash91
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Charge through lightbulb(just needs checked)
- juggalomike
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How Does a Climbing Man Affect a Balloon?
- The legend
- · Replies 9 ·
What Is the Voltage Between Terminals A and B?
- Learnphysics
- · Replies 5 ·
Waves question RE combination of frequencies and semitones
- coffeem
- · Replies 1 ·
Mechanics 1 (M1) - Vertical motion under gravity
- Ulti
- · Replies 5 ·