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.
Franklin's lightning bells. Easy Question.
  • shimizua
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Potential Energy of a child on a swing
  • lguer47860
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6
Force and Simple Dynamics: Pushy Astronaut
  • mrnastytime
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2
Determine a rocket's altitude; how long rocket is in air
  • tatertot560
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I don't know where went wrong help needed
  • lmlgrey
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Pressure difference between aorta and aneurysm
  • dcramps
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2
Chebychev's Theorem: Old Faithful Geyser at Yellowstone
  • slimrs13
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What is the final velocity of a watercraft with 2-dimensional acceleration?
  • chris097
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5
Need Help with 1D Kinematics Problems? Here's Step-by-Step Guidance!
  • AbbyGirl
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Inelastic collision of a projectile with a pendulum
  • mjolnir80
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2
Ideal Gas Equation | Find Gas Temperature
  • keemosabi
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3
Calculating point charges and ratio of electrostatic force to weight
  • zooboodoo
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Electrical fields between two objects
  • cougarsoccer
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1
Two Infinite Non-Conducting Planes
  • blueskadoo42
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3
Bernoulli's Equation and venturi meter
  • keemosabi
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3
Calculating Moment of Inertia and Frictional Torque for Rotating Wheel
  • nns91
  • · Replies 15 ·
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15
Fluids at Rest: Calculating the Force Required to Hold Wood Underwater
  • arpitm08
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5
Finding zero net force between two charges
  • kam761
  • · Replies 7 ·
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7
Two problems gettin on my nerve
  • O.J.
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8
Center of Mass and Linear Momentum of pellet gun
  • michaelmayhem
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8
What Is the Realistic Horsepower of a Truck Climbing Rabbit Ears Pass?
  • pippintook
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1
Solving Quadratic Equation: Find the Time
  • intenzxboi
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5
Solve Acceleration Due to Gravity on Distant Planet
  • Malaya
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2
Help with Newtons laws and friction
  • beamerrox
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1
Critical angle/ last angle of refraction
  • davidelete
  • · Replies 6 ·
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6
What Mass Can a Bug Have to Maximize Stress on a Spider Web?
  • dimpledur
  • · Replies 5 ·
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5
Significant Figures: Dealing With Simple Calculations
  • myxomatosii
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1
Moment of a force about a point
  • jonnyboy
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3
Accelerating Ions through semicircular plates
  • tmvphil
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1
Static and Kinetic Friction Forces (Finding Net Force)
  • FAJISTE
  • · Replies 10 ·
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10
Please Explain when an RC Circuit Opens - Effect on a Light bulb
  • ncm2
  • · Replies 4 ·
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4
How Do You Calculate the Area of a Gold Leaf and the Length of a Gold Fiber?
  • P.O.L.A.R
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8
Finding where Magnetic Fields = 0
  • nmacholl
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1
How to Find Force Given Mass, Distance, Angle, and Velocity?
  • kuhawkfan25
  • · Replies 10 ·
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10
Reflection and Refraction, much index of refraction
  • davidelete
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6
Max Mass of Carpenter to Keep Table Upright: Fnet=ma #15
  • dtl42
  • · Replies 1 ·
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1
Thermodynamics ice cube question
  • physics_geek
  • · Replies 5 ·
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5
Canoeing: Speed Relative to Water and Shore
  • Breaststroke2
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3
Calculating Height Using Elastic Potential Energy
  • kuhawkfan25
  • · Replies 6 ·
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6
Vectors, magitude, scalar components
  • brittbc
  • · Replies 1 ·
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1
Projectile motion cannonball problem
  • maobadi
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1
Calculating Work Required to Move a Charge Between Two Identical Charges
  • cashmoney805
  • · Replies 5 ·
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5
What is the Maximum Acceleration of a Mass Attached to a Vertical Spring?
  • adashiu
  • · Replies 6 ·
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6
What is the Torque on Point A?
  • OneCosmicGuy
  • · Replies 11 ·
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11
Finding X components for instantaneous velocity with points on a graph
  • NEAnderson90
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1
What Happens to an Insulator When a Charged Metal Ball Approaches?
  • fwFAWFSERG
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1
How Do You Calculate Wave Speed and Frequency in Water and Sound Waves?
  • ahrog
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1
How Long Does It Take to Hear a Stone Hit the Bottom of a Shaft?
  • ahrog
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3
Spring and electrostatic forces
  • Krique
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2
Pendulum acceleration homework
  • ahrog
  • · Replies 3 ·
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3
How to draw electric field around neutral object, dipole, and charged object
  • yalublutebya
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Projectile with fixed angle and tripled velocity
  • enantiomer1
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1
What Are Key Questions About Light Refraction and Wavelength?
  • patriots1049
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6
Finding Resultant Force Components and Magnitude: Fx, Fy, F, and \gamma
  • spokorne
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7
Kinematics question centripedal acceleration and projectile motion
  • reb659
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3
What Is the Centripetal Acceleration at Different Points on a Rotating CD-ROM?
  • luap12
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3
Tension and Velocity: When Does the Object Return to its Initial Position?
  • yayitsrobby
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Heat Tranfer Problem with Varying Temperature
  • tejas710
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How Does Temperature Affect the Diameter of a Hole in an Aluminum Plate?
  • Brit412
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Solving 2007 F=ma Physics Olympiad Problems: AP Phys. C Study Guide
  • myanmar
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2
Need Help Solving Grade 10 Final Exam Questions!
  • examhelp!
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2
Finding Equilibrium Charge: Solving for the Number of Electrons Transferred
  • pghjenn19
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Calculate Acceleration of object in Circular motion
  • Jordash
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Relatvitiy - Spaceship traveling into Galaxy
  • Nitric
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Introduction to Physics HELP. I AM LOST
  • cashboxz01
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8
Dinstance traveled with a constant force?
  • disque
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3
How Long Does a Projectile Take to Reach the Valley Floor?
  • Jordash
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Electron & Proton within a capacitor
  • Hannisch
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5
Thermal Expansion of a steel plate
  • Brit412
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What is the Minimum Force to Move Two Connected Bars on a Frictional Surface?
  • cordyceps
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How to Calculate Electric Field of Half Spherical Shell with Gauss Law?
  • asi123
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Electric field and charge enclosed
  • 2Pac
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Impulse-Momentum Theorem and diving board
  • chops369
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Weight & Tension Helo 2 Tension
  • d1343
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3
Short answer questions on Solid state physics
  • closed
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Understanding the Electric Field of an Infinite Wire
  • asi123
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Moving a block with kinetic and static friction to find the net force?
  • disque
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2
Calculating Tension: Pulley System with Different Masses | PhysicsForums
  • botab
  • · Replies 6 ·
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6
Dude. How do you Uncross a cross product?
  • Saladsamurai
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2
Dimensional Analysis Equation Help
  • Manda*n
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Finding the magnitude of force given acceleration?
  • disque
  • · Replies 2 ·
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2
Electric potential inside charged ball
  • malawi_glenn
  • · Replies 14 ·
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14
Find Forces Homework: Solve F1 & F2 Equations
  • d1343
  • · Replies 1 ·
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Currents in an series electric circuit
  • -EquinoX-
  • · Replies 11 ·
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Perfectly Inelastic and initial kinetic energy
  • jan2905
  • · Replies 3 ·
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Circular motion/momentum conservation
  • ritwik06
  • · Replies 12 ·
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12
How many tanks can a 150 ft. barge carry without sinking more than 1 ft?
  • NYCHE89
  • · Replies 2 ·
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Max Height Achieved by Ball in Physics Project
  • Michael17
  • · Replies 2 ·
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Thermal Conductivity of a Metal Rod
  • Koshi
  • · Replies 4 ·
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4
How Is the Electron's Path Altered in a Parallel-Plate Capacitor?
  • xjadeu
  • · Replies 2 ·
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Quantum Mechanics and Eigenfunctions Checks
  • TFM
  • · Replies 4 ·
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Electric field of a cell membrane
  • throllen
  • · Replies 1 ·
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1
I quick. havent been paying much attention.
  • 85Mario85
  • · Replies 10 ·
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10
Magnitude of the Net Electrostatic Force On an Oxygen Atom
  • shimizua
  • · Replies 1 ·
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1
How Do You Calculate Direction and Vector Components in Physics Problems?
  • Scropion
  • · Replies 3 ·
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3
What Force Does the Wood Exert on the Bullet?
  • mrnastytime
  • · Replies 4 ·
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4
Cannon Fire! Senior Physics Research Project
  • Michael17
  • · Replies 1 ·
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Electric Field Problem in a Tube
  • mburt3
  • · Replies 3 ·
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3
How Do You Calculate Acceleration from Position and Time Data?
  • CustardPi
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What Is the Final Charge on Sphere C?
  • Nivlac2425
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