Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Find the gravitational potential energy
  • mustang
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Elastic Collision is kinetic energy conserved?
  • Cummings
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Why Might My Physics Lab Results Differ from Theoretical Expectations?
  • pezzang
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Newtons second law force problem
  • pringless
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Find the magnitude of the applied force F
  • ryan
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Tension - pully problem w/ monkey
  • missrikku
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How to incorporate the initial vellocity
  • kbrowne29
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Work Done yadda yadda These problems are killing me
  • Antepolleo
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What Is the Maximum Height a Thrown Ball Reaches?
  • Aerospace
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Need help Inverse of an operator
  • einai
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Projectile Motion, speed of ball
  • Lara
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About force and motion in Physics
  • Johnny Leong
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Where u and v and initial and final velocities
  • mcintyre_ie
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Dynamics Problem HELP - Free body diagram
  • coglon
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How do Hermitian operators affect normalized vectors?
  • einai
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Engineering Physics help (Frictionless surface with hockey puck)
  • sirfederation
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Hockey Player Acceleration Question
  • MalusIgnis
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Formulas and reasoning behind finding focal length
  • Apoxyus
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A 66.9 g mass is attached to the end of an unstressed vertical spring
  • Aerospace
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Calculating the Period of Binary Stars
  • StephenPrivitera
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What Are the Steps to Solve Linear Momentum and Collision Problems?
  • Nanabit
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Two blocks with masses of 4kg and 8kg
  • pezzang
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Determine the vehicle speed for which this curve is appropriate
  • pezzang
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Riddle in a mono-alphabetic code
  • wubie
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2
How Do You Calculate the Dynamics of a Two-Mass Pulley System?
  • mb1174
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Finding the Derivative of a Quadratic Function
  • Chris_w
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Resolving Vector Problems: Finding Solutions to Confusing Questions
  • Acidvoodoo
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2
How Does a Varying Force Affect Kinetic Energy in Motion?
  • missrikku
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Stumping the Teacher: "Will it Float?"
  • Nanabit
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4
How Do You Construct a Triangle with Given Side, Angle, and Median Length?
  • wubie
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Falling flowerpotstuck on simple part
  • Rockdog
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What is the difference between the potential difference, and its emf?
  • JaeSun
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Is spin the same as torque in physics?
  • tucky
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What Is the Flow Rate in the New Pipe?
  • mary d
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What Frequencies Arise from a 4 ms Waveform Cycle?
  • jon9986
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Work A mass m hangs from a spring.
  • StephenPrivitera
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Understanding the Speed of Life: Experiments & Ideas
  • Yaqout
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Balancing Camper's Water Load: Methods and Explanations
  • kangta
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Most Conducting Metal + Roughest Surface: Find Out Now
  • PRodQuanta
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Astronomy: Opposition question
  • Math Is Hard
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What is the angle of the pendulum at its highest point?
  • jpnnngtn
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3
How High Was the Building If a Rock Hits the Ground 43m Away?
  • sirfederation
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Need help on mutual inductanfce calculation
  • HiEdgar
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Surface tension for water and mercury
  • mary d
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Projectile Motion Help, Please?
  • bonita
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Rock on stringsstuck on last part of problem
  • Rockdog
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4
How Do You Calculate Kinetic Energy and Resistance Forces in Physics Problems?
  • PianoMan
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When Should You Use the Law of Sines and Cosines?
  • havechanged
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Need ideas for a 7th grade science experiment?
  • photon
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How Do You Solve These Complex Physics Problems Involving Forces and Motion?
  • Matthew
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What Are the Two Possible Wind Velocities in This Relative Velocity Problem?
  • mcintyre_ie
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Kilowatt: Electricity Unit of Energy - 10kWh, 10units, 5kW, 1hr & 1kW
  • da-outcast
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Golf ball distance when hit down 45 degree slope
  • dar|{anGel_
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How to Draw Velocity Vectors for a Car on a Racetrack?
  • sirfederation
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Conservation of Angular Momentum Problem
  • Moxin
  • · Replies 7 ·
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Baseball Velocity Projectile motion
  • cowgiljl
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Find Optimum Launch Angle For Distance in Physics Class Project
  • HBar
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Predicting Gravity on Other Planets
  • Newb
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Solving Momentum Problems: How to Find Speed and Magnitude - Help Available!
  • SpaceKat
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What Velocity Does the Sled Reach After 5 Seconds?
  • Phyzor
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What is the speed of the block after sliding down the incline?
  • Nb
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Solving a Flux Density Problem: Explaining E and B Field Amplitudes
  • jlmac2001
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How Do Mass, Radius, and Period Affect Centripetal Force in Horizontal Loops?
  • thegame
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Solving Physics Problems: Sleds, Trucks, Bullets & Cars
  • explorer
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How Do Brakes Apply Stopping Force in Physics Problems?
  • guhroovy_dainzaar
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A 52.2 kg driver steps off a diving board
  • mustang
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A problem on centripetal forces and friction
  • Chiara
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Did I Solve This Projectile Motion Problem Correctly?
  • bard
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The USS Constitution’s largest anchor weighed 5443 lbs
  • tucky
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Calculate Coulomb Barrier Height & Distance with 7.68MeV Alpha Particle
  • Beer-monster
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Will a block on a table move with a 36N force and what will its acceleration be?
  • explorer
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Solving a System of Equations for Pulley Accelerations and Tensions
  • Chiara
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Physics Puzzle: The Rear of a Bicycle & the Front of a Car
  • Moon
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Find the angle relitive to the x axis
  • Mesmer17
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How do I solve AP chemical equations without memorization?
  • JKLM
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Demonstration on theoretical physics
  • PRodQuanta
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Does the Bullet Stop Midair and Does the Falling Monkey Get Hit by the Dart?
  • physicszman
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What is the speed of light in a diamond
  • jlmac2001
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Where Can I Find Rhodoferax Ferrireducens?
  • PRodQuanta
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Calculating Coefficients of Friction and Tension in a Two-Block System
  • Freebunny
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So... What is the complication with the force in this setup?
  • FrostScYthe
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Simple motion graphs i need some clarification
  • rdn98
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Three pulling strings with tension
  • rdn98
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Homework freely falling body Problems
  • meteoguy04
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Question about Archimedes Principal
  • ZeroXD
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How Does Kinetic Friction Affect Motion in a Pulley System?
  • lizette
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What is the Spring Constant and Angular Frequency of a Car's Suspension?
  • RIT_Rich
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How Far is a Loudspeaker from Two Observers Based on Sound Levels?
  • Lipd
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What Causes Increased Horizontal Velocity After a Perfect Bounce?
  • sonya
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How Long to Overtake Another Car at Different Speeds?
  • Nanabit
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Solving Physics Mechanics Problem: Snowball Off Barn Roof
  • Tony Zalles
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Can Different Moving Speeds Have Identical Acceleration?
  • physicszman
  • · Replies 6 ·
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Why Does the Ball Appear to Rise Vertically to the TA?
  • Juntao
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IB Math Methods- Problems with Problems
  • Astronomer107
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Have You Ever Wondered Why Sunsets are Red?
  • Chiara
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Help interpreting a force problem
  • lizette
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What could be causing the discrepancy in my circular motion calculations?
  • PianoMan
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Solving Dropped Tennis Ball Problem: Calculating Force of Floor
  • J.T.
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Conservation of Momentum and Energy in an explosion
  • mrbling
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Why Does a Car Speed Up on a Sloped Driveway Despite Friction?
  • imaqueen
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