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 Do You Calculate the Maximum Angle of Inclination After a Collision?
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Electrodynamics, multipolar development doubt
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Direction of E-Field in 3d space
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Complex Moment of Inertia Calculation
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Locating a Fault in an Underground Cable: A Voltage-Based Approach
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Extended essay ideas for physics -- help needed please
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Calculating Air Density and Temperature in a Hot Air Balloon
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What is the change in the internal energy of the water?
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What is the tension of the string needed for a 440 Hz fundamental frequency?
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Faraday's & Ampere's Laws: Conditions of Independence
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Calculating Pendulum Angle and Amplitude: Homework Question and Equations
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Four bodies connected through a sheave
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What is the energy loss of damped oscillator
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What is the minimum frequency to keep the mass moving?
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Cube sliding down with frictionless slide
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Center of Mass Calculation for a Club-Axe: How Far from the Handle is the COM?
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How Is Power Calculated for a TIR Moving at Constant Velocity?
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Insolation, efficiency, and area
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Oscillation Problem: Find Period and Potential Energy
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How Accurate Is the Calculated Friction Force for a Sled Sliding Down a Hill?
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Exam question that I have no idea how to solve (regarding forces and mass)
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Plank problem/Center of Gravity/Torque/Level Arm(p.26)
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Snell's Law: Dispersion Light Angle Refraction
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Find Max Mass B for Mass A to Move on Slope of 30°
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Gravitation above and below the earth's surface
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Empty Box with Plumb Bob Sliding Down a Plane
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Can someone help explain the normal force as the average force in a pile driver?
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How does friction affect the acceleration of a moving box?
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Energy efficiency, Transformer?
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Kinetic Enegry and Hydrogen Atoms
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Calculate the tension in a tube
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Linear Momentum Algebraic interpretation
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Calculating Efficiency and Thermal Source Rate in a Steam-Electric Power Plant
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What is the correct formula for solving time in free fall?
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Friction force : determining coefficient of friction
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Verifying Solutions to Newton's Equation for a Harmonic Oscillator
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How Much Hydrogen Is Needed for a Balloon to Float at 10km Altitude?
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Perpendicular wires carrying current, torque
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Kinetic Energy -- when a moving lorry breaks to avoid a collision?
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Parallel Resistors (special cases formula)
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What Angle Causes a Block to Topple on an Inclined Plane?
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Magnetic Force on Wire 2: Verification Needed
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Exploring Oscillatory Motion of Two Connected Masses on a Frictionless Track
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How Does Increasing Friction Affect the Movement of a Box on an Inclined Plane?
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Vector description of motion around a bend
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Is it possible to find the tension force without mass?
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Finding the distance between two points in terms of variables
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Energy of a car going up a hill
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Biot-Savart and a Rectangular Loop
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How much power is delivered to a circuit by a battery?
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Finding the electric field at a point in between 3 electrodes
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De Broglie Wavelength Calculation for an Electron with 120 eV Energy
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Water flow in pipe with two open vertical offshoots
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Electric field on surface of the Earth due to solar radiation
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Gravitational Acceleration Question
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Airplane pilot in a dive, net force, minimum speed, and normal force.
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What Is the Maximum Height Achieved by Mass M1 After Elastic Collision?
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What is the Force Between Links in a Falling Chain?
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Molar heat capacity and Degrees of freedom
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Satellite in Space: Why Freely Falling?
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Finding Final Velocity of Mass 1 After Collision
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MasteringPhysics 8.82: Conservation of Energy/Momentum Problem
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Answer: Energy of Rocket in Uniform Gravity Field
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Drop in pressure, what volume is left?
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Weightlessness in Space: Understanding the Concept and Its Effects on Astronauts
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Frictional Forces -- Skier trying 2 different skis on a gentle slope
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Potential drop across capacitor after very long time
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How Do You Determine the Components of a Vector Perpendicular to Another?
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Ideal Gas Expansion - Finding final pressure and work done by gas
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Conservation of matter, mass, rest mass and energy
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Light angles measured in a moving reference frame
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Finding the Critical Angle for Shelf Gliding: A Statics Problem
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Velma and Mort's ice cream is melting special relativity problem. Help please.
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Rigid Walled Box (Quantum Mechanics)
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Solve Bragg Diffraction: n(λ)/2sinθ
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Radioactive Decay: P to Q vs. S to R?
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Will the trains ever be at the same distance from the origin?
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Finding center of mass of three disks
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Calculating E/M for Helmholtz Coils -- help please
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Special relativity question: space travel and relativity of time
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How Far Apart Are a Proton and an Alpha Particle at Their Closest Approach?
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Bernoulli equation - pitot tubes
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Frictionless Multiple Body Problem with Inclined planes
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How to find cord tension and hinge force?
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Inertia of a Giraffe in Terms of a Monkey (I'm serious)
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Relative Speed of Two Masses Connected by a Rod
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How Far Does a Car Travel When Slowing Down?
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How Fast Did Klaus Spinka Accelerate on Grass Skis?
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Launching a Probe to the Sun: Aim Against Earth's Velocity?
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Relationship Between Acceleration on a ramp and Acceleration due to gravity
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Total Impulse: Solving the Equation
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Motion along a curved path -- introductory
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Kinetic energy of a rotating and translating body?
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Cartesian Convention of Displacement Vectors.
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Confused conceptually about work done with pulleys
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Gas Laws -- An astronaut breathing presurized air
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Kinematics Question. Incline, Spring, Friction
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How Can You Measure Torque in a Servo-Controlled System?
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Electrical Circuit Calculations
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Energy in a long inextensible string
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