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.
Calculate the work done by the force
  • pph1011
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How Does Firing a Machine Gun Affect the Movement of a Flatcar?
  • subwaybusker
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How Much Work Does a Machine Perform Between 9s and 18s?
  • pph1011
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Solving for Torque, Angular Momentum, and Acceleration in Rotational Motion
  • angel120
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Elastic collision 2 dimension unequal masses not at rest
  • grrrphysics
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Friction - Coin on Rotating LP (solving for mu)
  • asc3nd
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Belt friction - determining angles
  • O011235813
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3
How Far Must a Sound Source Move to Create Silence Due to the Doppler Effect?
  • beastysk8er
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Angular Momentum of a candy dish
  • al86
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The Magnetic Flux through a Solenoid
  • marrone
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Find the final velocity of the railroad car.
  • ScullyX51
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Solving Quantum Objects to Energy-Level Diagrams
  • lebprince
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Finding Amplitude of a Mass on a Spring | Simple Harmonic Motion
  • ultrapowerpie
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Static Equilibrium: Max Distance of Top Brick Beyond Table Edge
  • future_vet
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Friction on top of object with frictionless surface?
  • lax1113
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Finding the Threshold Force for a Bike Wheel and Step to Lose Contact
  • plutonium
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Non-Uniform Bar Torque and Tension Calculation
  • Inertialforce
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Ball rolling down a frictionless plane?
  • physics_liker
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How to Calculate the Velocity and Impact Speed of a Ball Launched by a Spring?
  • bmandrade
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Simple (Frustrating) Combined Gas Law Problem
  • DDNow
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3
How Close to the End Can Suki Walk Before the Beam Tips?
  • halo9909
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Minimum Diameter for Steel Wire: Solve It Now
  • asleight
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4
Time it takes to hit the ground
  • SunKissedGal1
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2
Compression of a sphere underwater
  • ultrapowerpie
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7
Charge by Contact: Net Charges on Each Sphere?
  • kiplings01
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Another Electric Charges Q about Leaves
  • kiplings01
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2
What Affects the Electric Field on Point P on a Charged Sphere?
  • kiplings01
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Finding Time when throwing an object up
  • SunKissedGal1
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3
Force Calculated: Harris & Paul's Surfboard Challenge
  • halo9909
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Magnitude of Acceloration problem
  • SunKissedGal1
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8
Centripetal Force: Tire Radius Calculation for 5.0 10-3 kg Stone
  • bblake2010
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Mechanics Problems: Tensile Forces and Pressure
  • asleight
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7
Calculating Final Velocity in a Totally Inelastic Collision
  • bmandrade
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3
Calculating Speed in an Inelastic Collision
  • jessguy
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5
S.I.N. 72 Question - Angular Velocity?
  • Suck at This
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Solving an AS Physics Problem: Steel & Brass Extension
  • chaz699
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4
Conservation of energy of a roller coaster car problem
  • bmandrade
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Momentum and impulse of a volleyball
  • *intheclouds*
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9
Momentum of System Homework: Total Momentum at h/2
  • Husker70
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Calculating Forces in a Static Equilibrium Bridge System
  • akan
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5
How Does Impulse Affect the Horizontal Speed of a Softball?
  • *intheclouds*
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Solving Momentum and Speed: 1500kg Car Moves 25 m/s
  • Husker70
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HELP System of particles problem
  • Kudo Shinichi
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Forces and laws of motion worksheet-Newtons first law
  • meredith
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What Limits a Car's Acceleration at Zero Velocity?
  • fk378
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Calculating Ek At a specific point
  • Articulum
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Impulse and momentum of a sled
  • Jennifer001
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What is the peak force between two pool balls in a pool shot?
  • fk378
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Angular velocity of a small object
  • maevis18
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Problem dealing with elastic collisions.
  • dban33
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How to Calculate the Elongation of a Spring with a Submerged Block?
  • dban33
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Calculating Angular Velocity and Torque of Big Ben's Hands
  • dban33
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Collision of Balls - Coefficient of Restitution
  • prateek_34gem
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Can someone check my answers (Closed and open tubes)
  • viciousp
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D)We can use the same formula as in part A. L = 343 m.s / 466.2 HzL = 0.737m
  • SEEDS
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Solving Mappings Problem: Onto, One-to-One and Co-domain
  • jackiemoon
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Damped Oscillator Problem - Very Hard
  • Dillio
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Calculating the Final Image Location in a Compound Lens System
  • jcvince17
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Calculate Local g on Small Planet: 3.70g Wire, 3.00kg Mass, 43.6ms Pulse
  • lulu16
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Calculating coefficient of kinetic friction through angular acceleration
  • xregina12
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What Is the Speed of a Ball After Bouncing Off a Charging Elephant?
  • vortec135
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How Do You Calculate Rocket Propulsion and Acceleration?
  • redred7
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Help with conical pendulum problem
  • pammy345
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Help calculating the the activity of a radioactive sample
  • pearlblack
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How Does Angular Momentum Affect Projectile and Rod System Post-Collision?
  • jessedevin
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How to Solve Basic Physics Problems: Tips and Tricks for Slope, Angles, and More
  • asdfsystema
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Another physics problem that I do not know where to start
  • dban33
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Freezing Water: 100cm³ of Water vs. Ice Cube
  • nyrychvantel
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How Do You Calculate Initial Velocity from Jump Height?
  • btr94
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Solving for Angular Velocity and Torque: Big Ben Minute and Hour Hands
  • dban33
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Calculate Elongation of Spring Given K, Mass & Density
  • dban33
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Electrical energy to heat energy
  • jaredmt
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Solve Snell's Law Problem: Determine θ
  • haxxorboi
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Calculating Angular Momentum: Uniform Rod and Point Mass Collision
  • avenkat0
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Finding Tension and Acceleration on Frictionless Surfaces
  • m.piet
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Torque. I thought i understood it. Obv I don't.
  • DDRchick
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How Do You Calculate Tension and Reaction Forces in a Leaning Broom Problem?
  • ultrapowerpie
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Force and acceleration question
  • physics_geek
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Solving a Rainforest Biologist's Homework Problem
  • sweedeljoseph
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Integration, where am i going wrong here?
  • devanlevin
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Momentum Change and Impulse in Colliding Balls
  • soupastupid
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Coefficient of friction along an inclined plane
  • Ulti
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Solving for Magnetic Field Strength given Induced voltage in a coil
  • under_par_00
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Solve Trampoline Question: Jump from 10m & 20m Height
  • vpv
  • · Replies 11 ·
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Work Done Gains Energy, Heat Energy is Wasted
  • sweedeljoseph
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How Is the Coefficient of Kinetic Friction Calculated in a Block-Spring System?
  • Quincy
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Conceptual question on transitional and rotational equilibrium
  • xregina12
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What Determines the Gyromagnetic Ratio in Rotating Bodies?
  • TFM
  • · Replies 19 ·
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What is the most accurate way to measure the velocity of a rolling marble?
  • MacFanBoy
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Newton's Law Problems: Solve My 4 Problems
  • the whizz
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How Much Higher Must the Initial Hill Be Than the Loop?
  • JebsCripedìas
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What Frequency is Needed for Effective Ultrasonic Cleaning?
  • ghad58@yahoo.
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How Is Work Calculated in Elliptical Orbits?
  • CaptainADHD
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Calculate Cable Tension in a Slanted and Horizontal Position
  • bamb3ry
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Question related to Newton's second law
  • UNknown 2010
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What is the minimum pushing force required
  • nns91
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Why does the object disappear when viewed from face AD in a square glass block?
  • alexmahone
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Junior in High School Honors Physics Bumper Project
  • delaneymarty3
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Egg experiment (increase time of collision)
  • aamphys
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Instantaneous (Midpoint)/Average Velocity?
  • cudah
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