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 Determines the Direction of Static Friction in Rolling Without Slipping?
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Freefall in a Newtonian gravitational field
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Lifting a car using a hydraulic lift
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Electric field between 2 objects and electric force on object?
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Measuring pressure using a manometer.
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Opening the refrigerator door to cool a room.
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Conservation of Momentum Questions
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What is the heat flow rate [ ]?
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Finding Mass and Velocity in an Elastic Collision at an Angle
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Liquid pressure in microgravity
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Why is W=m*g relevant if I am standing still and not moving ?
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Is the Relativistic Doppler Shift Formula Correctly Applied in this Problem?
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Electrostatics- spheres leaking charge
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Uniform rod pivoted off-center
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Change in energy stored on a capacitor when dielectric is changed.
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Which Formula to Use for Sound Intensity Calculation?
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Is momentum conserved in y direction ?
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Calculating Mass of Water Pumped by a Motor
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What Determines the Electric Field Magnitude at Half the Radius of a Solenoid?
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Maximum perpendicular height above an inclined plane
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Find Maximum extension in the spring-Work Energy Problem
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MoI of a Sphere using Spherical Coordinates
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Calculating Charge and Current in a Resistor Circuit
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Maximums on a Diffraction Grating
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Optimizing Mirror Widths for Periscope Design
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Launching a projectile from a spinning wheel
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Using elastic equations to calculate height
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Gaussian Surface and Charge Density
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How much extra force is needed to pull a heavier toboggan?
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Help with uniform motion problem.
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Projectiles On An Inclined Plane
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Work problem on winding up a cable
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A gyroscopic rotating magnetic field
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Solving Friction & Wood Homework
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How Does a Variable Coefficient of Kinetic Friction Affect Block Acceleration?
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Electromagnetism: Axle rolling on train rails
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Pulley Problem 1: Calculating Masses Acceleration & Tension
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Calculating instantaneous acceleration
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Simple Harmonic Motion: Period Calculation and Newton's Second Law Explanation
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How Can I Calculate the Displacement and Path Length of a Fly in a 3D Room?
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Understanding Electric Field Superposition in the Presence of Multiple Charges
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Can Conservation of Energy Explain Particle Movement on a Frictionless Surface?
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How Do You Calculate Uncertainty in Ammeter Readings?
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Attractive Force Between Sun & Venus
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Optics Question, where is the lens
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Motion of an object dropped from a descending and ascending helicopter
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Energy Dissipation in an RC Circuit: Finding the Total Thermal Energy
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Maximum working shear stress and working force?
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Interference Waves: Frequency, Wavelength, Speed
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Gallons of H20 needed to cool molten steel
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How Do You Calculate the Power Supplied by Batteries A and B?
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How Do You Calculate the Upward Force Needed to Keep a Board Level?
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Mousetrap Experimental Investigation
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Find acceleration given initial and final velocity, and displacement
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What is the Tension in Steel Wires Supporting Aircraft Wing?
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What is the Correct Final Temperature in an Ice-Water Heat Transfer Experiment?
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Block pull, Problems with trig to isolate for theta.
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Statics: Shear and bending moment, distributed load
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Quadratic Air Drag and Bullet Motion: Solving for v^2 in Terms of x
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Cycling on the Moon, no air resistance to cause terminal velocity.
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Lennard-Jones Potential: Equilibrium Distance and Dissociation Work
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Calculating Wind Speed for Suspended Cylinder
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Wheels Reaction Forces: Solving for Ra and Rb?
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What Is the Final Velocity of the Black Ball After Collision?
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How do I Find the Enclosed Charge of a Closed Surface?
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What Are the Answers to These Magnetism Questions?
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How can an uncharged capacitor work as a short circuit?
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Valence Electrons of ClO2+: A Comprehensive Guide
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Under what conditions is a current generated w/ a magnet and solenoid?
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What Is Acceleration and How Does It Relate to Velocity and Time?
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Quantum Mechanics Help. Compton Scattering Use.
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How Do You Calculate the Average Kinetic Energy of Multiple Helium Atoms?
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How to Graph Potential Energy from Force Fx Along the x-axis?
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Statics: Forces in a truss, method of joints
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Electric Field of a Polarized Sphere with Nonuniform Polarization
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How Can I Improve My Understanding of Mechanics in Physics?
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What is the Correct Value of Dx in Frame Analysis?
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Calculating Capacitance of a Parallel Plate Capacitor Using Integration
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Error analysis/mechanics help appreciated
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Principle of conservation of linear momentum equation
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What is the final angular velocity when two rotating disks are pushed together?
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Box on ground, incline (with friction), ground: find Kinetic Energy
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How does the moment of inertia scale?
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Can the fullness of a cylinder of water be determined by its frequency
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Momentum of an object exploding into two separate objects
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Solve Rotational Problem 3: Max Angle for Rod+Clay
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Elastic collision between two billiard balls
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Problem of Oscillation of mass attached to spring with external force
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Coefficient of drag of a ping pong ball
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Minimum distance around a track
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Problem on the magnetic force on a wire
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Another relative speed and size question
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Calculating total work using kinetic-work theorem
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Diffraction Grating Homework: Zeroth & 1st Order Bright Spots
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Torque on shaft of pulley question
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Battery and capacitor in series
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How many times must an 80 kg weight be lifted to burn off .5 kg of fat?
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Why Does the IPhO 2012 Problem Assume ΔU=0 in a Collapsing Star Model?
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Coulombs force law in a three dimensional coordinate system problem
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Accounting for Water Vapor Condensation in Charles' Law Experiment Measurements
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