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.
Two masses accelerate towards each other
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Find Lowest Speed to Yank Tablecloth - F/dt=0
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Net torque on a cylinder by multiple applied forces
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IB Extended Essay research project on relativity
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Find spring constant k using an electrical circuit
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Potential inside a rectangular pipe
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Terminal Velocity of a Falling Parachutist
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Question about this Radial function Rl(r)
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Laplace operator in spherical coordinates
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Why Define Internal Energy Using Average Mechanical Energy?
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How to Simplify the Laplace Equation in Spherical Coordinates?
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An electric circuit problem involving 5 current variables
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Are suvat equations valid in 2 dimensional motion for constant acceleration?
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Fluids: Concept about Fluid Pressure in a relation with Force and Area
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Can a harmonic be louder than the fundamental frequency?
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Direct proportionality equations
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Moving Source, Observer at Rest, derivation for Doppler effect
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Deriving density formulae from first principles
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Airplane Vector Problem: Drawing the diagram
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Find equivalent resistance R in the circuit
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Chain rule and division by zero
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Find power needed to fly this airplane using momentum considerations
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Torque on a pulley (2 masses connected by a string hanging from 2 pulleys)
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Loop problem with skier on ramp going into a loop-the-loop
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Multiple Tanks Concept: Changing Water Level Difference
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Solving Elastic Collision of Two Balls: Theory & Solutions
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Find the equivalent resistance between two points in terms of R
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Electric heat generation from parallel rods carrying current in an oil bath
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Special Relativity: What are the events in the question?
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How did the textbook get this answer? (satellite motion question)
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Evidence that the Earth rotates in Space
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Uncertainty in Newton's law of cooling
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Doppler effect derivation for moving observer and stationary source
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Optimum Battery (and Wire) to Power 10x Mini 1.5V Bulbs in Parallel?
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Question about this unit conversion principle (multiplying by "1")
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Does a Bent Wire Affect Induction Calculations?
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Mass-energy conservation in nuclear reactions
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Electric flux through a hemisphere due to these charge configurations
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What does this expression involving Partial Derivatives mean?
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Find unknown wind velocity given airlplane's speed
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Calculating torque about a point with given forces
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Analyse motion of an oscillator: x(t)=0.2cos(12*pi*t)
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I know everything to do on this problem except one thing
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Question on Time-Independent Perturbation Theory
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Air Density & Bernoulli's Equation: Tolerance Explained
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Explanation for Newton II giving negative mass in my Physics lab results please
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Magnetic field at origin due to infinite wires and semicircular turn
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Circular Motion: Tangential and Normal Acceleration
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2D kinematics problem -- Skateboard ramp jump calculations
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No problem, happy to help! Good luck with your project.
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Graphing velocity, acceleration, and position
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Center of gravity of this body: y = (x^2)/a (rotated about the x-axis)
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What is the velocity vector of (rsin(phi), rcos(phi), 1) ?
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Wheelie of a car coming out of a ditch: what is the correct model?
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Sig Figs: Understand 2 Sig Fig Solutions
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Gradient (1/r): Homework Equation Solutions
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Water Rocket Science Project by Tanguy: Reach 11,2k m/s!
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Why is the work done double its expected value? (conveyer belt)
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What Does d Represent in Interatomic Spacing Diagrams?
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Vector is a function of its position or not?
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Calculation of Box's Acceleration on a Trailer with Friction
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What is the magnitude of the field at point R?
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Potential difference between 2 points in a capacitor circuit
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Work done pushing a spring from the side
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Find the magnitude of the electric field at point P
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Find the magnitude of the electric force from 3 charges at vertices of a cube
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Pressure, Density: Water & Oil in Glass Tube
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Forces for bodies connected by a wire on inclined surface
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Deriving force from momentum using d(mv)/dt
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Efficiency and Temperature in Heat Engine Cycles: Approaching Parts B, C, and D
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Mixing two gases in an isolated system and calculating final p and T
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Work energy KE theorem for a book being lifted up in a gravitional field
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How to find the equilibrium position of three masses (two of them fixed)?
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Tension in Rope Wrapped Around a Rod
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Distance as a function of time for two falling stones
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Solved problem: Projectile in slanting tunnel
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General form of Newton II -- Not understanding this step in the derivation
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Impulse integration for a Tennis Racket hitting a Tennis Ball
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Vector Math Problem (Boat crossing a River)
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Extended Essay Research question help (first year IB student)
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Square of orthogonal matrix vanishes
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Calculate Max Resistance for 2 Parallel Wires
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Velocity-time graph from distance-time table
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Determine the voltage at each point with respect to ground
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Fluid flow rates in straight vs coiled tubes
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Calculating Velocity Components and Slope for a Falling Rock in a Tunnel
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Problem about a block of ice melting (specific latent heat)
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Solve First Year Harmonic Motion Problem: Cylinder Rolling
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Why Capacitors in Parallels vs. Series: Coaxial Capacitor Case
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How to show light from laser pointer is plane polarised?
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Total Force on a Point Charge in Motion
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Work done on a gas when it is compressed quasi-statically
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Why must we use absolute temperature for the Ideal Gas Law?
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Block and pulley on movable incline
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Capacitor 1/3 filled with a dielectric
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Loop the Loop Problem Solution | N > 0, Energy Conservation Method
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The Definition of Torque - a proof
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A Force Changing With Distance (bead moving on a curved wire)
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Microscope Optics: questions and calculations
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Work done by a normal force (or rather, work NOT done)
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