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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Explaining the Concept of a Swinging Atwoods Machine
- fahd
- · Replies 2 ·
Finding Maximum Acceleration on a Box on a Cart with Friction
- amcavoy
- · Replies 5 ·
Solving a Photographic Puzzle: Comparing Heights of Images at Varying Distances
- mathzing
- · Replies 3 ·
Estimating the Effect of F-16 Engines on Earth's Rotational Speed
- willworkforfood
- · Replies 4 ·
What Is the Correct Mass of Water When Hot Copper Meets Cold Water?
- Pengwuino
- · Replies 3 ·
Solve Min Acceleration for 5g Spider: Gr 11 Physics
- PhysicBeginner
- · Replies 15 ·
Question about coefficient of kinetic friction
- catapultum_habeo
- · Replies 2 ·
Calculating Relative Velocity for Walking on a Treadmill
- Jacobpm64
- · Replies 2 ·
How to Calculate Doppler Effect Frequencies for Moving Objects?
- Wen
- · Replies 1 ·
EMF related question, I'm totally stuck
- lando45
- · Replies 5 ·
Kepler's Third Law: Proportional Orbit Period to Distance^1.5
- eku_girl83
- · Replies 1 ·
Error Propagation for F=4*pi^2*r*m/T^2
- badtwistoffate
- · Replies 9 ·
What forces are acting on the ant as it swings on a rotating rod?
- Wen
- · Replies 5 ·
Problem involving incline, spring and friction
- cgotu2
- · Replies 1 ·
Discovering the Maximum Force to Keep a Box at Rest on an Inclined Ramp
- F.B
- · Replies 1 ·
Tension problem involving Centriptal force
- Lucky14
- · Replies 3 ·
Beta decay - derive an expression relating source angle to energy
- Exulus
- · Replies 5 ·
Need help with a qn on rotational motion.
- Wen
- · Replies 1 ·
Tension in Two Connected Blocks: 4KG & 5KG
- SS2006
- · Replies 8 ·
Piano sliding down an incline - work problem
- confusedbyphysics
- · Replies 10 ·
Accelerations without friction problem
- jesuslovesu
- · Replies 2 ·
Power due to the force applied to the block by the cable?
- ViewtifulBeau
- · Replies 1 ·
Beginner Physics: Solving G Constant on Planets
- PhysicBeginner
- · Replies 3 ·
How Can I Solve a Projectile Motion Problem Without Knowing the Mass?
- saschouch
- · Replies 6 ·
Calculating Frictional Force: Tension in Sleigh Rope & Mass of 47kg
- F.B
- · Replies 5 ·
How Does Air Resistance Affect the Distance of Free Fall?
- eku_girl83
- · Replies 1 ·
How Did Roemer Measure the Speed of Light Using Jupiter's Moons?
- dekoi
- · Replies 1 ·
Solving for Initial Velocity in a Projectile Motion Basketball Shot
- NoMeGusta
- · Replies 5 ·
How Does Projectile Motion Determine a Football's Field Goal Success?
- kevinlikesphysics
- · Replies 1 ·
What is the Solution to the Roller Coaster Apparent Weight Problem?
- joseph harris
- · Replies 3 ·
How Do I Solve Forces in Physics Problems Like 1d and 1e?
- SS2006
- · Replies 4 ·
Calculating Final Position in Projectile Motion: A Case Study
- NoMeGusta
- · Replies 2 ·
Blocks, Friction Forces and Acceleration
- sunnyorange
- · Replies 4 ·
Why Does My Electron Energy Calculation Keep Failing?
- brandon26
- · Replies 1 ·
Projectile motion of conservation of energy?
- firemanpato
- · Replies 5 ·
Equilibrium Problem: Finding the Applied Force on a Stationary Board
- WhatTheBleepDoIKnow
- · Replies 8 ·
Determining the Minimum Length of a Plane Mirror to View a 5m Drawing
- charlie 42
- · Replies 1 ·
Sun Interference astronomy question
- lektor
- · Replies 3 ·
Launching marble upwards - Find speed
- lachlan81
- · Replies 2 ·
Solving Force Problems: Work Done from x=0 to x=4m
- brad sue
- · Replies 1 ·
Calculating Heat Energy from Falling Object
- dragon513
- · Replies 4 ·
Solve Tension on Wall-Hung Picture Frame Wire
- skialta
- · Replies 1 ·
Calculated the total time kinematics
- jacy
- · Replies 2 ·
Solving Tension & Pulley Problems: Acceleration & Tension Explained
- amcavoy
- · Replies 7 ·
Max Speed to Maintain Road Contact over Bump
- Lnav1982
- · Replies 3 ·
How do orbits and forces affect planetary motion and satellite trajectories?
- Weatherkid11
- · Replies 2 ·
How Does a Model Train Transformer Work?
- jena
- · Replies 1 ·
Modeling Forces in Free Falling Chain Problem
- SN1987a
- · Replies 12 ·
Understanding Pressure & Gas in Physics: Explained with Examples
- mathaTon
- · Replies 2 ·
Electric fields and de broglie wavelength
- ascky
- · Replies 3 ·
Force Between A and D: Repulsive?
- hotmail590
- · Replies 6 ·
Calculating Initial Bullet Speed in Bullet-Block Collision on a Table
- billiam
- · Replies 3 ·
Maxwell's Eqns & Einstein on Speed of Light
- Phymath
- · Replies 3 ·
Heat transfer: ice in water bath
- huskydc
- · Replies 9 ·
Find Maximum Elevation of Test Rocket
- jenc305
- · Replies 4 ·
What is the tension felt when a rock is dropped off a cliff connected to a rope?
- amcavoy
- · Replies 2 ·
Translatoral equlibrium question
- Elysium
- · Replies 1 ·
Static Friction: Mop Handle Critical Angle
- amcavoy
- · Replies 16 ·
A problem dealing with Faraday's Low of Induction
- jena
- · Replies 2 ·
Solving Dynamics Problem of Two Colliding Spheres
- bartieshaw
- · Replies 7 ·
Calculating Instantaneous Power in a Uniformly Accelerating System
- lonely86driver
- · Replies 3 ·
What Is the Minimum Static Friction Coefficient to Keep a Block Motionless?
- Raiden9
- · Replies 7 ·
Calculate dropped ball acceleration question
- Michaelenetaylor
- · Replies 1 ·
Physics HW Help: Find Force for Wheat on Conveyor Belt
- cwgeary
- · Replies 1 ·
How Do You Calculate Frictional Force with Multiple Normal Forces?
- amcavoy
- · Replies 2 ·
Help Me Find Answers to My Stolen Homework Test Due at 11 pm CT
- Keem
- · Replies 15 ·
How far does the truck travel in this time?
- SpicyQ
- · Replies 2 ·
Max Voltage for Three Series Resistors Connected to a Battery | HW Help
- nutster
- · Replies 2 ·
How Is Newton's Third Law Applied in Calculating Forces on a Lawn Mower?
- F.B
- · Replies 1 ·
Universal gravitation and inclines
- AdnamaLeigh
- · Replies 7 ·
Why Can't I Solve This Circuit Resistance Problem?
- gstatejoe
- · Replies 3 ·
What Is the Second Force Acting on a Particle in Constant Motion?
- Elysium
- · Replies 5 ·
Finding the Acceleration of a Moving Bus Using Newton's Laws
- tedjj
- · Replies 2 ·
Calculating Distance Traveled by a Point on a Rotating Wheel
- willworkforfood
- · Replies 4 ·
Projectile Motion - Elevated Target
- matrix0f8h
- · Replies 10 ·
Center of mass of a triangle (uniform density)
- Kenny Lee
- · Replies 5 ·
Solve the Balance: Meter Stick Mass Calculation
- ah-huh
- · Replies 1 ·
How Do You Calculate Work and Internal Energy from a Thermodynamic Graph?
- ice87
- · Replies 2 ·
What is the Mass of the Metre Stick?
- NMW
- · Replies 7 ·
Balaning metre-stick - Find the mass
- NMW
- · Replies 3 ·
Force Analysis of an Elevator Moving Upward
- ahh86
- · Replies 1 ·
Mastering Tension Problems in Physics for Students
- physixnot4me
- · Replies 2 ·
Solve for Tire Radius: Mass, Friction Coefficient, Normal Force, and Speed Given
- rockmorg
- · Replies 1 ·
Someone Explain these Concepts to ME
- NotaPhysicsMan
- · Replies 6 ·
Absolute Zero: The Founding Discoveries
- jaidon
- · Replies 3 ·
How Do Currents in Adjacent Wires Affect Their Mutual Force?
- jena
- · Replies 2 ·
Velocity of Light vs Train: Why the Difference?
- ranger
- · Replies 4 ·
What Does a Scale Read for a Person in an Elevator Under Various Conditions?
- aceXstudent
- · Replies 11 ·
Really though relative motion/momentum question
- 404
- · Replies 2 ·
Calculate Horizontal Force & Power Output for 50kg Sprinter
- maki
- · Replies 2 ·
Calculating Work Done on a Train with Jet Engine Thrust?
- missyjane
- · Replies 4 ·
Understanding the Forces Involved in a Basketball Jump
- watarn
- · Replies 8 ·
Surviving a Fall: Calculating Velocity and Impulse for Safe Landings
- jakeowens
- · Replies 2 ·
Finding the Longest Wavelength for Interference Patterns
- mrjeffy321
- · Replies 5 ·
Solving a Baseball Word Problem: Time in Air & Height of Ball's Path
- RHSLilSweetie07
- · Replies 6 ·
Power & Cost of Raising Ton/Meter/Minute
- Inventor
- · Replies 2 ·
Power Math: Finding Current & Power Dissipated through Person
- Tcat
- · Replies 1 ·
How Does Poiseuille's Law Calculate Blood Flow Speed in the Pulmonary Artery?
- je55ica7
- · Replies 1 ·
How Do You Calculate Centripetal Force for a Car on a Curve?
- dginrit
- · Replies 1 ·