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.
What Equations Are Used in Projectile Motion Calculations?
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What Are the Vertical and Horizontal Forces on Door Hinges?
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Dynamical Equations & Free Body Diagrams: Solving for Net Force and Torque
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Bead confined to a circular hoop
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How do I calculate the moment of inertia for a wagon wheel with spokes?
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Calculating Distance Traveled on an Incline with Friction
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Calculating Focal Length and Minimum Diameter for Laser Beam Diffraction
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Understanding Gravity: The Role of Forces in Momentum Questions
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What Is the Magnitude of the Pulling Force Exerted by the Wife?
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Transverse wave problem. It's a doozy
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Help on Spring and conservation of energy problem
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Doppler Effect Homework: Solve 600Hz Sound Generator & 100RPM Rope
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How Many Fission Reactions in a Year
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Designing a Roller Coaster: Higher Hills After the First? Explained.
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Avg. temperature rise & energy conversion
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CENTER OF MASS of a circular conical surface
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Impulse, Momentum, and Baseball
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Can't find mistake on Spring/block Energy problem
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Can static friction cause an accelerating train to stay on its tracks?
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Net work done on boat by locomotives
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Reducing Risk of Injury: The Impact of Air Bags on Stuntmen's Falls
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Energy Released in Fission Reaction
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Colder Metal on Wooden Deck: Physics and Physiology Explained
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Why Must We Use Absolute Temperature for Ideal Gas Law?
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Help with force vectors problem
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How Far Does a Block Slide Up an Inclined Plane?
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Calculate the mass of sand added to the bucket
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Collision With Linear and Angular Momentum
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Calculate RMS Voltage for 120V, 60Hz Transformer
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Bowling ball, incline and torque
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Universal Gravation Problem -experts needed haha
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Rotational dynamics-rotating door w/ 4 panes
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Two hanging masses supporting object
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Degrees of Freedom and Molar Specific Heats
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Rectangular sheets, angular velocity time?
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Why can't people grow infinitely tall?
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How Does Friction Affect the Velocity of a Mass on a Spring?
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How to Calculate the Initial Angle of Incidence in a Mirrored Maze?
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How Is Oxygen Partial Pressure Maintained in Deep Sea Diving?
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What is the equation for average angular acceleration?
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Problem about the Conservation of Energy
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How Do You Calculate Net Force of Tension in Uniform Circular Motion?
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Need help with a force vs time graph.
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Convert 9.0 Moles Argon to kg: Tutorial
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How Do You Calculate Photon Flux on a Surface?
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Solving Sound Wave Confusion: Finding Intensity at Distance d_0 from Source
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Relationship between Molar Mass and Velocity of Hydrogen and Oxygen
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Magnetostatics and Electrostatics
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Qestion regarding independent study
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Find the average translational kinetic energy of nitrogen molecules
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Magnetic Field Problem - Tricky Wording.
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Help with pressure-force problem
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Rotational Motion of a spun disk
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Finding Angular Velocity and Tip Speed of a Falling Rod
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How Do You Calculate Block Dimensions in a Uniform Magnetic Field?
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What is the minimum height required for an object to make it around a loop?
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Two copper metal plates separated and charged
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What Angle Ensures the Ball Appears to Move Straight?
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What Must the Output of the Powerhouse Be to Power the Factory?
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Will Traffic Light Remain Hanging? Laws of Motion
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Circuit breakers and short circuits
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Mechanical Energy: Trampoline Artist Jumps and Depresses Spring
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Driving car in slope, when does the tire start to slip?
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Sphere/disk rolling down an incline HELP
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Finding Focal Length of Diverging Lens with Parallel Rays
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Springs and simple harmonic motion
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Projectile motion with air resistance and ball of mass
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Energy conservation/rolling object
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What Is the Optimal Angle for Maximum Range in Projectile Motion on a Slope?
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Bernoulli's Principle(?) Problem
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Calculating Oscillatory Motion: Mass, Spring Constant, and Displacement
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Minimum Height for Loop Solution: Mass Sliding Down Ramp
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Gravitational Force: Solutions and Explanations
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Solving Vector Problem: Displacement from Point A
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Find the Error: Solving PV=nRT for Temperature
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Airplane Wing Lift: 20m2, 300m/s & 280m/s
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Rotational Motion: Understanding Torque, Work & Energy
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Compact Disc Problem: Average Angular Acceleration
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How Fast is the Racecar Moving Based on the Doppler Effect?
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Why is the 'X' obtained in the experiment different from the expected 'X'?
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Resonant Lengths in open and closed colums
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Rotational Motion About a Fixed Axis
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Find Tension in a Cable with Rotational Mass
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Help with a Wave Intensity Problem
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Relative Velocity Swimmer Problem
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Potential Energy: Hiker at 1600m to 3100m - Change, Work, & Explanation
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Calculating Moments, Equilibrium
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Speed and Direction after Collision
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Frequency changes in respect to moving sources and observers
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Lots of people read this, but no one helped.
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Melting ice and water displacement
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Angular momentum of two objects help
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How Does Electric Field Direction Affect Electron Path in Parallel Plate Setup?
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Solving Water Nozzle Problem: Ratio of Plug Radius to Hose Radius
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What is the velocity of the swinging pendulum?
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What is the Initial Speed of a Satellite Launched from a Moving Space Station?
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How Do Nonconservative and Conservative Forces Affect Energy Conservation?
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Angular Motion Question Understanding help ?
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Find Initial Velocity & Angle of Projection for a Projectile at 40m
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Determine its maximum angular displacement?
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