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.
Water falling = how much power?
  • Bigdane
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3
Electric Potential Homework: Gauss's Law, Integrals, Bounds
  • Aero6
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2
What Are the Speeds and Heights of a Colliding Ball and Clay Blob?
  • Rookster
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How Do You Determine Zero Potential Locations on the X-axis with Two Charges?
  • zooboodoo
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Block on an incline connected to a mass cord pulley 26˚. acceleration?
  • aly1201
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3
Olympic Long Jumper's Takeoff Speed
  • makdaddymac
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3
Calculating Work for a 71 kg Runner: Rest to 10.2 m/s Velocity
  • CBears019
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Proton deflection in a capacitor
  • badBKO
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Double your speed. (True/False)
  • FAJISTE
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10
Determine Initial Velocity, Max Ht for Diver Proj. Motion HW
  • TheShehanigan
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3
Solving Kinetic Energy Lab in Online Physics Class
  • McSara
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2
Two Knights Collide: Solving Homework Problem
  • makdaddymac
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18
Speed Sliding down a hill (frictionless)
  • Bigdane
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2
Motion with Constant Acceleration (True/False)
  • FAJISTE
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5
Work, Vertical and Horizontally
  • Bigdane
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4
Frictionless Slide (mastering Physics)
  • papa_smurf493
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10
Calculating Div and Curl for some arbitrary vector fields
  • Vuldoraq
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5
How Far from the Midpoint is the First Point of Constructive Interference?
  • kendie16
  • · Replies 9 ·
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9
Infinite potential well and linear superposition
  • Vuldoraq
  • · Replies 6 ·
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6
Quick Question (Position vs Time Graphs) True/False (Due soon)
  • FAJISTE
  • · Replies 4 ·
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4
Moment of inertia and integration
  • nns91
  • · Replies 14 ·
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14
Calculating Safe Speed Range on a Banked Curve: Physics Question
  • botab
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1
Showing px-Et is invariant using Lorentz Transformations
  • Nitric
  • · Replies 4 ·
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4
Rectangular Resolution and Polygon Theorem
  • wellgrin
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1
Why do the units for time appear twice in the units for acceleration
  • mppaki
  • · Replies 7 ·
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7
Solid mechanics problem (pretty much a static problem)
  • DyslexicHobo
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Maximizing Acceleration on an Icy Hill: A Work and Energy Approach
  • Arsham
  • · Replies 4 ·
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4
Calculating Capacitance of Misaligned Plates
  • Sawoah
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1
Coulomb's Law - Electrostatics
  • sally2442
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1
Car Crash numbers not working?
  • Phoenixtears
  • · Replies 4 ·
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4
Physics120 car collision question
  • physics120
  • · Replies 5 ·
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5
Percent Length Contraction (check solution)
  • Quelsita
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4
How Far and Fast Does the Car Travel to Overtake the Truck?
  • J89
  • · Replies 1 ·
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1
What Are the Key Principles of Projectile Motion?
  • Michael17
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1
How Can I Calculate the Force and Distance Between Protons in a Triangle?
  • jawo3
  • · Replies 3 ·
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3
How Do You Calculate Electric Field and Potential Between Two Charges?
  • aimslin22
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3
Two charged particles moving towards each other
  • Nivlac2425
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2
Calculate Force & Coefficient of Friction for 2000kg Car & 1.2 x 10^8 J/Gallon
  • pippintook
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Change in Momentum, Impulse, and Wall Impulse
  • FlukeATX
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3
How Does Geometry Explain the r/R Ratio of .225 in Sphere Packing?
  • Saladsamurai
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Calculating Time Dilation: Apollo's Record-Breaking Speed and Earth's Clocks
  • Quelsita
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2
Calculating Electric Field Strength Between Two Disks with 24 Volt Power Supply
  • yoleven
  • · Replies 4 ·
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4
Electric field of a charged ring
  • Seraph404
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2
Kinetic Energy/Circular Motion and figuring out point charges
  • succubus
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5
What's the deceleration of the car?
  • canucklehead
  • · Replies 6 ·
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6
Drawing Electric Field Lines and Equipotential Lines
  • jumbogala
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6
Uniform Motion Problem: How Far is the Island?
  • Raizy
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4
Velocity and acceleration vectors problem
  • estie
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4
Solve Acceleration Problem: Plot Distance vs Time
  • estie
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3
Flux Calculation for Non-Uniform Electric Field on Cube Sides
  • Melawrghk
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Electric flux through a multihedral face
  • JJones_86
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Catch-up problem, can't seem to get it
  • ArmavirMig
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3
Calculating Force and Torque on a Dipole
  • haroharo
  • · Replies 7 ·
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The Time of Return for a Particle Undergoing Negative Acceleration
  • estie
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Charge Distribution on a Conducting Shell
  • Seraph404
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2
What is the Relationship Between the Mirror Equation and the Lens Equation?
  • davidelete
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6
Maximum Resting Mass and Acceleration in a Friction System
  • drsl92
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Quick question on thermal expansion.
  • marmot
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1
What Are the Limitations of Charge Values in Physics?
  • JSapit
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4
What Is the Correct Way to Calculate Net Torque?
  • trajan22
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1
How Do You Calculate the Bending Angle of a Bimetallic Strip?
  • tejas710
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6
Torque and vector related. Is this possible.
  • Laurencio
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4
Calculate how many Kgs of water flows through the plant
  • gigglin_horse
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3
Does Adding Weight to a Suitcase Increase Its Natural Frequency?
  • mmMMgood1020
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Turntable Rotation with weight on edge v. in the center
  • AROD
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5
What is the Total Displacement of a Car Driven in Multiple Directions?
  • queenspublic
  • · Replies 12 ·
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Static Electricity and Triangles
  • toasted
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1
How Do You Solve the Exploding Projectile Problem in Physics?
  • Noob.com
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Calculating Force Exerted on 17-kg Box from 90-N Force Acting on 11-kg Box
  • apples
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4
How Hot Does a Flashlight Bulb's Filament Get When Turned On?
  • JJones_86
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Static Electricity and particles
  • me_and_you
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How far does the bird travel before the trains collide?
  • lauriecherie
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5
How Far Does a Charged Particle Travel Before Stopping Due to Repulsive Force?
  • Nivlac2425
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Halliday Chapter 25: Final Charge of Uncharged Capacitors Problem
  • george2
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2
Calculating external work done in electric field
  • winterwind
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4
Electric & Gravitational Fields
  • mandos
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1
Relative Velocity of an escalator
  • UMich1344
  • · Replies 1 ·
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1
Electric field at the center of curvature of a solid hemisphere
  • Aero6
  • · Replies 4 ·
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4
Electron beam of a computer monitor
  • JJones_86
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2
Thermodynamics of Mixing Ice and Water in a Glass Container
  • haydn
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3
How Do You Solve Basic Impulse-Momentum Physics Problems?
  • wellgrin
  • · Replies 5 ·
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5
Help with calculating pendulum problems
  • toasted
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2
I with this question on velocity/displacement
  • Starscream.
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4
Electric field just beyond surface of proton
  • winterwind
  • · Replies 1 ·
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1
Net Displacement (Probably very easy, but I don't get it)
  • FAJISTE
  • · Replies 3 ·
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3
Understanding Wave Frequency and Tension: V=fλ vs V=√T/μ
  • tanzl
  • · Replies 7 ·
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How Is Electric Flux Calculated Using Gauss's Law for a Nonconducting Cylinder?
  • physicsfun
  • · Replies 9 ·
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Voltage drop across a capacitor
  • zooboodoo
  • · Replies 2 ·
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2
Solving Vector Problems in Physics: Hot Air Balloon and Wind Velocity
  • roxxyroxx
  • · Replies 4 ·
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Solving Block on Incline Homework Problem
  • shikamarufoo
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1
What is the speed of a falling box?
  • syang9
  • · Replies 5 ·
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Constant Electric Field and Potential
  • ganondorf29
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Calculate the x-component of the electric field
  • xxaznitex
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2
How Do Currents Affect Swimming Across a River in Physics?
  • roxxyroxx
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1
Angle of Attack: Why Pilots Fly Differently at High & Low Altitude
  • gigglin_horse
  • · Replies 1 ·
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Depth of a well (using a stone and sound)
  • needlottahelp
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Observing Single Electron Diffraction
  • atavistic
  • · Replies 4 ·
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4
Dynamics: Projectile Motion velocity equation
  • cojaro
  • · Replies 16 ·
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16
Physics: Projectile Motion with different starting and ending heights?
  • 015734
  • · Replies 3 ·
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3
Voltage, current, and power wasted
  • cuttlefish
  • · Replies 3 ·
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3