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.
Does Dropping the Anchor Affect the Barge's Water Displacement?
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Question about the Magnetic Flux equation in Integral form
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Angular Velocity: Pulley and belt system
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Centripetal acceleration along a latitude of Earth
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Trace on the screen of a C.R.O. when a deflection coil is rotated
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Why is ##\text{flux} = \pi\text{intensity}##
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Relationship between horizontal range and angle of launch
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Internal Energy of an Ideal Gas
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Stick leaning on the wall, find the acceleration from the initial position
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How to calculate the normal stress of a Howe reinforcement?
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EMF and how it's related to Potential Difference
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Two observers viewed from different sources
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Ohm's law, current density, free & bound charge
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Calculating joint reaction forces
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Temperature rise without heat energy?
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Semi-circular cylinder and line charge
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Interference pattern of a fan of plane waves
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Beam current of positrons and electrons
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Variation of Electric Field at the centre of Spherical Shell
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Inertia Homework Help: Understanding the Concept of Stretched Objects
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Calculating Force and Work for a Penguin Climbing up an Ice Slope
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1-D Motion, calculating final velocity
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Finding Multiple Angles from Sine Values on the Unit Circle
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Constant frictional resistance & retardation
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Electrostatic potential and electric field of three charges
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Aerodynamics problem -- Hockey stick hitting another player
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Trouble with negative sign in this Potential Difference problem
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Motion of a Particle: Solutions & Examples
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Electrostatic potential energy of a non-uniformly charged sphere
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Elastic collision: Determine the deceleration
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Electron Trajectory: Stuck on a difficult problem....
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Pebble accelerated by the wind with a starting velocity
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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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