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.
Magnetostatiscs: dipole moment and magnetic field
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Push/Pull Force of wheeled cart on an incline
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Help understanding refraction in water
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Comparing 1000m Race Velocities: Runner 1 vs Runner 2
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Calculating Linear and Angular Motion in a Drum and Cable System
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Banked curves, coefficient of static friction
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Is Free Fall Acceleration Constant Until An Object Hits the Ground?
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Trip from San Antonio to Houston
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Vectors in yz and xz plane dot product, cross product, and angle
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Electrodynamics: electrostatic potential
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Solving Banked Curve Problem: Max Velocity
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Off by order of magnitude when calculating how much calcium is in bone
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Electrodynamics: charge of a particle
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What is the focal point of a lens in a geometrical optics problem?
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Maximum force applied to prevent block from sliding up ramp
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Energy transformations in an IC engine cylinder
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A scooterist trying to overtake truck
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Torque formula derivation for a particle moving in circular
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Is this a reference frame problem ?
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Pigeon Problem Solved: Calculating Car Velocities and Meeting Time
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Changes in pressure, temp, & entropy of ideal gas in atmosphere
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Calculating Decibels & Watts: Looking for Help
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Why Are My Coupled Oscillator Eigenvalues Incorrect?
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Kinematics Chasing Problem: Correct Answer and Explanation
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Solving a 2nd order non-linear DE by dimensional analysis/observation
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Gravitational force - I translating the wording into the formula
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Find the temperature of Liquid A after 12 minutes
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Show the velocity graph of a 4.7 kg object as it moves along the x-axis
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Analyzing the Time Needed for an Airplane Roundtrip in Windy Conditions
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Previous university exam problem on refraction (that I think is wrong)
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Electrodynamics, Electrostatic potential, electric-field
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The Force components acting on an object
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What is the eccentricity of an orbit such that Vp = 2Va?
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Object at rest hanging from two ropes
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Amplitude of standing wave for higher frequency
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A 2.0x10^4 kg rocket has a rocket motor that generates….
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Solving the Elastric 3-Body Collision Problem
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A box with two springs on a frictionless table
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Calculating Tension in a Pulley System at an Angle
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Calculating particle numbers in diffusive equilibrium of a battery
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Newton's law problem: Helicopter lifting a box with a rope
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Manometer -- determine height from relative pressure
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Air Resistance Problem: Dropping two balls with different masses
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Driven oscillator amplitude steady state X(t) = ##Asin(\omega t + \delta)##
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Work done on moving a submerged object
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Displacement problem with unit vectors
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Calculating Speed from Intervals: Feynman's Lecture on Physics Vol. 1
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Calculation of the rise in the temperature of a truck brake
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Why Does the Potential Energy Calculation for a Dipole Yield a Negative Value?
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Potential Energy of three charged particles
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Uneven charge distribution on a conductor
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I finding resultants using sine/cosine law
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How do I solve this physics exercise (Equilibrium)?
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Force exerted by rod on a mass moving in vertical circle
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How traveling 1nmi along a meridian generates a change of lattitude ....
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How Do Different Equations Affect the Initial Direction of a Traveling Wave?
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Help finding the Electric field at the center of charged arc
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Amusement Park Centripetal Force Question.
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Thin Charged Isolated Rod -- Find the electric field at this point
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What factors determine wattage of electrons flowing through a wire?
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Confused while reading HRK regarding rotational kinematics
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Show the identity ##\vec{\nabla}(\vec{r} \cdot \vec{u})##
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Confusing definition of electrical potential energy
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What Are Some Possible Topics for an IB Physics Extended Essay?
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How can I solve these two physics problems? (equilibrium and moment)
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Question on special relativity from "Basic Relativity"
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Power calculations for a motor spinning a turntable
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Height of pendulum after hitting a peg
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Determine the velocity of two balls after the first collides with a lever
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Motion - How do you find the time in the air of an object
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Calculation of pressure & volume both isothermally & adiabatically
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Special relativity and acceleration
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Special Relativity Problem -- Speeding through a red light to make it look green
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Electric Flux for a cube problem
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Force diagram of two rods hinged together
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Finding Radial Force from Free Body Diagram
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Car passing two markers, kinematics question
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How do I Format Shapes in MS Word?
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2-D kinematics challenge problem help please
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What is the speed of the bicycle?
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Solving Uncertainty in Data Analysis with Spectrophotometry
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How Do We Calculate Surface Charge Density on a Non-Conducting Shell?
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2 contradicting approaches for a 1D elastic collision
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In combing hair, how do I know which one is getting what charge?
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Is Your Charge Density Integration Correct for a Spherical Volume?
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SEM-EDX Analysis Summary: Identifying Material
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Misunderstanding of Gravitational Potential Energy
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Finding the maximum compression of the spring
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Finding The magnitude of the velocity
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How Does Nick's Acceleration Change When His Friend Pulls the Rope?
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Displacement nodes for overtones
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Volume density vs Surface density of charge distribution
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Tangential & Normal acceleration in Circular Motion
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Magnitude of the flux through a rectangle
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Help with Mathematical Description & Calculations of Space Charge Density
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Calculate quality factor of a damped oscillation from a graph
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How to solve for EMF and internal resistance in a circuit?
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I am having some difficulties solving a combination circuits problem
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Is My Solution for Part D Logically Correct?
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Linear size of everything in the Universe has been doubled overnight
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