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.
How Does the Right-Hand Rule Determine EMF Direction in a Non-Conducting Loop?
  • Kathi201
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Calculate Angular Acceleration & Time of Toy Car w/Vo, Vf, R, & C
  • cobrasny
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What is the impulse given the wall?
  • RUNVS
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5
Atwoods MAchine with two pulleys and three masses
  • karabear1919
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Solve Maximum Speed Equation: I (of P) = I (of o) + Md*d
  • dsptl
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Constructive/Destructive Interference
  • yayirunin2car
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5
Particle Motion in a Box: Solving for Electric and Magnetic Fields
  • tronter
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Question abot solving final velocity in elastic collision
  • HelloMotto
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Nearsightedness, Refractive Power, Optics
  • yayirunin2car
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5
Maximizing Distance and Angular Velocity: Solving a Billiard Ball Problem
  • Nanoath
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2
Conservatino of Momentum: Bowling Ball and Earth
  • needlottahelp
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Finding Gravitational Acceleration with Atwood Machine Graphs
  • snsquare
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Friction and Max accleration, please explain this example.
  • Yay
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Solving Projectile Motion with Initial Height and Final Velocity
  • Tubs
  • · Replies 24 ·
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Crash Acceleration: Calculate SUV's Rate of Change in Velocity
  • simplekin93
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Work and energy roller coaster question
  • Inertialforce
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6
How Do You Solve a Two-Mass, Two-Spring System with External Harmonic Force?
  • qwertybob
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Inclined plane with massless, frictionless winch
  • r34racer01
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Impulse and Momentum of a belly flop
  • zoner7
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3
Acceleration of a Ball: Understanding the Force of Gravity
  • simplekin93
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3
Calculating the Length of a Rough Patch Using the Work-Energy Principle
  • tater08
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3
Why Didn't Taking the Second Derivative Solve the Angular Acceleration Problem?
  • Garen
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6
Calculating Induced EMF in a Coil
  • Ithryndil
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How to derive the law of conservation of mechanical energy
  • Chase R
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What is the train's final speed?
  • jjl15hid
  • · Replies 6 ·
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How Far Down Does the Stone Strike the Opposite Building Wall?
  • chudd88
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The Force on a Current in a Magnetic Field
  • whatadoll
  • · Replies 6 ·
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6
Average Resistance Force Question
  • alexandray77
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Coefficient of friction and drunk driver
  • smw1016
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1
Center of Mass of 3 Masses at Corners of Triangle w/ Side L
  • smw1016
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Two blocks connected by string with an angled force applied
  • blakester
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2
Master Final Physics Exam: Solving Problems from Chapter 8 with Expert Help"
  • grizzy225
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1
Work is still a four letter word
  • kkronvall
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2
Swimmer and River (Relative Velocity)
  • ritwik06
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1
What is the Coefficient of Kinetic Friction in a Sled Pulling Problem?
  • ScullyX51
  • · Replies 7 ·
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Motional emf i thinkchange in area and magnetic field
  • goWlfpack
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5
Solving for Speed: Average Net Force & Mass
  • uno
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I am lost, dont know how to solve part 2
  • asmasky
  • · Replies 5 ·
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5
Bouncing Steel Ball (Elastic Collision)
  • Awwnutz
  • · Replies 11 ·
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How Does Elevator Acceleration Affect Scale Readings?
  • swede5670
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Was the Porsche Speeding Before the Collision?
  • Kudo Shinichi
  • · Replies 12 ·
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How to Calculate Kinetic Energy from an Internal Explosion?
  • Bones
  • · Replies 14 ·
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Finding Friction with a .26kg Mass at an Angle of 26.1°
  • Emily266
  • · Replies 4 ·
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Find momentum of pieces of shrapnel
  • Chrisleo13
  • · Replies 12 ·
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I have a few problems dealing with work and kinetic energy
  • shabut NAA
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Energy released by spaceship explosion
  • avenkat0
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What Is the Acceleration in an Atwood Machine with Blocks of 396 N and 180 N?
  • wallace13
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Calculating Work: Lowering a Piano with Two Ropes
  • sktgurl930
  • · Replies 4 ·
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Conservation of momentum (extremely easy but confusing)
  • avenkat0
  • · Replies 3 ·
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Finding the Best Angle for Pulling a Block of Mass M
  • lax1113
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Natural Frequency and wavelength
  • viciousp
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What is the Motional EMF in a Solenoid with a Square Loop Inside?
  • goWlfpack
  • · Replies 6 ·
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6
Shell fragments exploding - NSL for system of particles
  • netrunnr
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Ellipse on x=y Axis: Find Standard Formula
  • scoradition
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Magnetic flux / induced emf problem
  • tombroz
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Conservation of Momentum in an Explosive Collision
  • avenkat0
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How Does Wave Amplitude Affect Ant Weightlessness on a Tightrope?
  • beanieb
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Why Does a Heavier Wooden Crate Stop at the Same Distance?
  • caltzx
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Understanding Flux and EMF in a Rotating Conducting Coil: True or False?
  • haxxorboi
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PE of Hanging Cord: Solve 8th Ed. Ch.8 pr.35
  • TimH
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Find work on a straight line path
  • steph3824
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How Do You Calculate the Specific Charge of a Cu2+ Ion?
  • bullseye
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Calculating Net Torque: An Example Problem with Formula and Image
  • dsptl
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Brackett series nearest to Paschen series
  • Quelsita
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Work and Energy of an electric motor
  • Inertialforce
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Car's vibration after being compressed, and released on springs
  • rinarez7
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Why Does Water Taper When Falling?
  • TFM
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Battery Energy and Altitude Change
  • gates040
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Energy in circular path with spring
  • edowuks
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How Does Buoyant Force Compare to Weight When an Object is Held Submerged?
  • tippetmaster
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Gravitational force on the earth and mars
  • Oerg
  • · Replies 15 ·
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Practice Test Questions: Truck Acceleration & 2-Block Friction System Analysis
  • xxpundoxx
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What Is the Direction of Induced Current in Copper and Glass Tubes?
  • Precursor
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Solving for Mercury's Perihelion Distance
  • Kinash
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Is Lower Impulse Better for Surviving a Car Crash?
  • Slacker142
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Fiding the coefficent of friction for work done.
  • Exiab
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Circular motion of a ball and string
  • physics_geek
  • · Replies 4 ·
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Inequalities Can You Help A GAL Out? THANKS
  • BeckyRN
  • · Replies 2 ·
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Current/Voltage/Resistance HELP
  • krugertown
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How Does Height Affect Weight in a Hypothetical Mile-High Building?
  • dominus96
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Penguin huddling -Heat transfer mechanisms -Radiation problem
  • ctpengage
  • · Replies 1 ·
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Integrating Work from Force(time)
  • ecophysicist
  • · Replies 6 ·
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Orbit Collision: Find New Earth Orbit Axes (A,B) in Terms of R
  • me9900
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How Do I Calculate F1 and F2 in This Equilibrium Problem?
  • Naldo6
  • · Replies 6 ·
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Calculating Air Resistance Force for Projectile Motion
  • keemosabi
  • · Replies 15 ·
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What Are Phasors and How Do They Work in Wave Analysis?
  • tony873004
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What Is the Final Velocity of Two Colliding Putty Wads?
  • uno
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Restoring Forces and Hookes law
  • Emendez3
  • · Replies 4 ·
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Help please, power (piano pulled up by workers through pulley)
  • xregina12
  • · Replies 1 ·
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Circular Motion/Centripetal Forces
  • omgitsmonica
  • · Replies 5 ·
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Pushing a Block: frictionless to friction
  • Bones
  • · Replies 1 ·
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Calculate Space Momentum: Vi, V1f, V2f
  • uno
  • · Replies 2 ·
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Solving Block on Incline Physics Problem
  • Maiia
  • · Replies 1 ·
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Circular Motion: 2-step System (very confusing)
  • asc3nd
  • · Replies 4 ·
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Calculating Energy Crossing Area in Uniform Fields
  • Kris1120
  • · Replies 1 ·
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Velocity of Pendulum at a certain point
  • grantrudd
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Solving Rotational Motion: 4kg Disk & 4.0kg + 8.0kg Masses
  • Mugen112
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How Is Centripetal Force Calculated for a Bird Pulling Out of a Dive?
  • Fractal314
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Tangential and Centripetal Acceleration
  • Brit412
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According to physics, why don't raindrops kill you?
  • annablax
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