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.
Electric Field of Equilateral Triangle with Uniform Charge Densities
  • feras
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Calculating Acceleration of a Falling Bucket Attached to a Pulley System
  • the whizz
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Conservation of energy of a jet powered car
  • nns91
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Finding the Optimal Lens Position for a Sharp Image of a Candle
  • roncool11
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What is the angle between two component vectors with magnitudes 8 and 10?
  • findlayxc
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What are the forces on a hinged beam supporting a shop sign?
  • djunderseage
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Exploring Circular Motion and Its Different Forms
  • kailey
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How Do You Calculate Torque in a Current Loop with a Hanging Mass?
  • dtesselstrom
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What angle maximizes air time for a launched ball?
  • pyroknife
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Is Your Calculation of Net Torque Correct?
  • Intrusionv2
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Is Online Tutoring Effective for Last-Minute Test Prep?
  • Max CR
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Spring Question? How much does the block move?
  • lu6cifer
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Calculating Entropy Change in a Thermal Conduction System
  • bpaterni
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Angular momentum/angular velocity.
  • the whizz
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How Does Air Resistance Affect a Flea's Jump Height?
  • Jaklynn429
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6
How Is the Force Calculated for Two Masses on a 30 Degree Incline?
  • lpcampbe
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Solve Drawbridge Problem: Will Cable Break Before Lancelot Reaches End?
  • the whizz
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Solving Hockey Puck Friction Problem
  • PvtDonutDJ88
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How Much Work is Done When Separating Two Opposite Pole Magnets?
  • Wingeer
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Solve initial-value problem for heat equation and find relaxation time
  • mmo115
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Thermodynamic Entropy Clarification
  • bpaterni
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Bernouli's Equation/Pressure Problem
  • alicemunro
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7
Help Kinetic Energy / Inclined Plane
  • stonnn
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3
Ferris Wheel Problem: Calculating Rotation Rate & Force Needed
  • luckycharmz
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Calculate the distance of the ship from the island
  • xcalibur
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4
Projectile motion with friction?
  • loup
  • · Replies 34 ·
2
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Angular Momentum and torque problem
  • waterfaire
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Explanation of Aurora Borealis and Aurora Australis
  • alara_rc
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Electric field between two separated metallic balls.
  • klackeos
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Evaluating Poisson Brackets: H=p^2/2m+V?
  • Domnu
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Volume Flow Rate: Solve for Water Leaving Faucet in cm^3/s
  • kathmill
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How Does a Spring's Compression Affect Scale Readings?
  • nns91
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Specific Heat and Maybe Latent Heat also
  • twilos
  • · Replies 10 ·
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10
Calculating Mass Sliding on a Slope
  • hodgepodge
  • · Replies 14 ·
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14
Bullet hits mass attached to spring with pic
  • hodgepodge
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5
Projectile Motion at Unknown Angle: Calculating Speed at Various Heights
  • hodgepodge
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How Does Elevator Motion Affect the Tension in a Suspended Lamp's Wire?
  • charan1
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Why are substances with shorter half-lives more radioactive?
  • alara_rc
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Compton Scattering/Conservation Of Energy
  • ri0t
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3
How Far Does a Slowing Train Travel?
  • lvck
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3
The entropy of the universe can never decrease
  • avenkat0
  • · Replies 11 ·
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11
What is the Net Force on a Block Against a Wall With Static Friction?
  • kathmill
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Projectiles launched at an angle not sure if i posted this already?
  • aly1201
  • · Replies 5 ·
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Calculating Final Energy of Stuck-Together Masses
  • hodgepodge
  • · Replies 11 ·
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Percentage of upolarized light
  • ally1h
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Angular Velocity of a turntable-man system
  • Kizaru
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3
Question about Sound an intensiy
  • cfl25
  • · Replies 1 ·
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Solve Physics 11 Homework: Work to Slide Block on Shelf
  • roxxyroxx
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How long would it take for a freight train to accelerate to 77.6 km/h from rest?
  • D3mon
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3
How does a parachute help a man hit the ground with a small kinetic energy?
  • hodgepodge
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Calculating Impulse in a Collision: Simple Physics 11 Homework Problem
  • roxxyroxx
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What is the electric field intensity at point A due to two point charges?
  • Inertialforce
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Calculate Escape Velocity to Leave Solar System
  • hodgepodge
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Force exerted in inelastic collision
  • chrisbowe82
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Energy to a 40% efficient engine
  • laxmanic33
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Calculating Apparatus Error: What to Do?
  • nokia8650
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Centripetal Force and Banked Curves
  • KOKA
  • · Replies 7 ·
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7
Snell's law of refraction, and Wolff BRDF
  • luisbf
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4
Archimedes Principle: Find Vol, Bouyant Force & Density of Plank
  • amy bowersock
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Detecting a stars microwave radiation intensity
  • Vuldoraq
  • · Replies 17 ·
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Minimum Potential Difference Required
  • E&M
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Electric Potential & electron oscillation
  • eoghan
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What is the length of the can above the water level?
  • rhodium
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How High Does a Ball Go If Thrown Upwards at 40m/s?
  • cyberhev
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Index of Refraction: n1 * sin(theta1) = n2 * sin(theta2)
  • Moony-
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Center of mass of baseball bat problem
  • nns91
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Who Will Reach the Bottom of the Hill First?
  • Shaunzio
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5
Circular Motion Homework: Solving for Velocity without Friction
  • swede5670
  • · Replies 19 ·
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Circular motion problem (study guide help)
  • PatrickL
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How Does Rope Tension Vary Along Its Length and Affect Wave Speeds?
  • bowma166
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Magnitude and direction of the force of the seat on you?
  • charan1
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What Is the Correct Translational Velocity of a Disk Rolling Down an Incline?
  • alexito01
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Solving an Inelastic Collision: Finding the Angle of Motion for Two Cars
  • alexito01
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How Does the Angle of a Pulley Affect Tension in the System?
  • Shambles
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What Is the Final Speed of Two Colliding Discs?
  • chicubs08
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Calculating Leverage and Mechanical Advantage
  • Ignoramus
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Projectile Motion and basketball dunk
  • omegax013
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Calculating Energy Received by a Human Eardrum at Threshold of Hearing
  • Cheezay
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And, at the moment, I cannot answer your question.
  • kimberly
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Please check my solutions on the following scans.
  • monkey13330gg
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How Do You Derive the Angular Velocity of a Ball in a Hemispherical Bowl?
  • mjolnir80
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What can be calculated from a trolly rolling down an inclined plane?
  • Anyone
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How High and How Long Will the Apple Travel?
  • lakhani7
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How to find the amount of work done on an object
  • itsmarasilly
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How Does Satellite Motion Work?
  • ColterMacK
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How Is Torque Calculated in a Drawbridge Pulley System?
  • electerr
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Find the image distance - optical instruments
  • ally1h
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Determing angular velocity after a collision
  • fluidistic
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Help With Spring Constants and Oscillaions
  • alexito01
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Max Acceleration of a Bungee Jumper
  • harvellt
  • · Replies 9 ·
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9
Physics 11: Calculate Velocity of Student Throwing Backpack on Ice Surface
  • roxxyroxx
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Solve Tricky Word Problem: Motorcycle Cop & Red Ferrari 308 GTS
  • kurtrudviking
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Several Old Exam Questions. (Mechanics and thermodynamics)
  • Phoenix940
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What are the calculations for a ball rolling up an incline plane?
  • charan1
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Frequency of first intensity maximum for loudspeakers
  • vaizard
  • · Replies 1 ·
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Archimedes Buoyancy Formula and washing astronauts
  • TFM
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How Does Cantilever Length Affect Vertical Deflection?
  • fangoro
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Understanding Faraday's Law: Coil in Magnetic Field
  • FourierX
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Calculate Velocity of 20g Bullet Striking 15kg Mass on Spring
  • hodgepodge
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Velocity of Car & Truck After Collision: Solved
  • Weezergames
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