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.
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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7
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Microscope Optics: questions and calculations
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12
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Work done by a normal force (or rather, work NOT done)
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Pressure at bottom of three differently shaped cylinders
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Can I find a general solution to this circuit?
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Comparing two dams (fluid mechanics question)
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Find the coordinates of a point in 3-space
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Angular Velocity of a Large Pendulum on Earth as seen from the stars
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My Solution Attempt: Visualized
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Find tension in ropes connecting 3 masses being pulled on a surface
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Torque about an accelerating point
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5
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Discharging a capacitor -- Calculate the current as a function of time
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Multi-part question involving a vector field
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Kinetic Energy of a Cylinder Rolling Without Slipping
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D'Alembert's principle on inclined plane problem
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Tension in a Massive Rotating Rope with an Object
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Work done by a force down a ramp
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Solving a Problem: What Went Wrong & Velocity for Both Masses
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Buckets on a pulley - Dynamics Problem
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Heat added to system increases mass
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Bernoulli equation for calculation of water flow
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Electric field amplitude question regarding intensity calculations
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Polarities of capacitor plates in a complex circuit
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The advisory speed for a car on a sloped bend
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A diamagnetic sphere in a uniform magnetic field
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Uncertainty: Systematic & Random
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Conservation of Energy when lifting a box up off the floor
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Does Depth Affect Buoyancy Force on a Spherical Object?
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Non-linear isotropic dielectric capacitor
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Work done by gravity and the minus sign
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Electron in a time variable magnetic field
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How does the calculation of work change for a rotating or non-rigid object?
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Does the book have an error in the addition of these two vectors?
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Definition of a non-polar molecule
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Density of a sphere that has a cavity
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AP Physics C Mechanics: Linear Momentum for Colliding Billiard Balls
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Direction of movement and sign of the charged particle
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Solving Heat Transfer of Ice Homework: Initial Copper Temp
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Calculating distance of Mars from the Sun based on two elongations
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Assumptions for string vibrator system
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Is There a Solution to My Pressure Cooker Problem?
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Battery alone deflects compass needle?
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Power dissipated in this circuit with 2 batteries and 3 resistors
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What are the x- and y-components of the velocity vector?
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How Many Bright Spots Are Visible When Laser Shines Through Slits?
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Do different length ramps violate conservation of energy?
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Minimum stopping distance so a box on a truck doesn't slip (friction)
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Agree or Disagree? Analyzing Wave Amplitudes
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How to calculate Apparent Weight of a passenger in a car going over a bump?
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Why Did I Get a Different Average Velocity Calculation for the Particle?
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Equipotential surface (test questions)
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Mixing two ideal gases with different V, T at constant pressure
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Normal modes of four coupled oscillating masses (Kleppner and Kolenkow)
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Experiment about diode related to temperature and potential difference
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Shouldn't this be kinetic friction instead of static friction!?
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Combination of 2 formulas for a graph
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Gravitational equipotential multiple choice problem
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Two masses, two pulleys and an inclined plane
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Basic Stress and Strain question -- Rock on top of a vertical column
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Horizontal force on a horizontal bar
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Maximizing Range/Time in Air of an Airplane: Solving with Calculus
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How Does Mass Cancellation Affect Acceleration on an Inclined Plane?
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Why is the Highlighted Statement True?
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Using first principles, how to get the equation of motion?
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Velocity of efflux out of a water tank
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Final Angular Momentum of a Space Station
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Finding Current in Resistors & Charge of Capacitor
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Rearranging formula using logarithms
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