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.
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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Is the Force Diagram for a Trolley with Zero Acceleration Accurate?
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How do you identify the systems in which Newton's Third Law is obeyed?
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Uncertainty, volume, and measurement
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In hot pursuit, Agent Logan of the FBI
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Dipole placed in a uniform electric field
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Time measured by two clocks (involves time dilation)
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Is Negative Acceleration Always Indicative of Slowing Down?
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Intro Physics homework help - distance and velocity
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Conservation of energy for a series of elastic collisions
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Special Relativity and lightning
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Subtracting two vectors -- I'm not getting the right answer
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Confusion in choosing an origin point for angular momentum
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Transition between excited states
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Calculate the individual voltage, current and power in series and para
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Can Derivative Methods Determine the Correct Angle in Physics Problems?
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EMF due to Lorentz electric and magnetic forces
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Exponential potential energy state diagram
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What's the source of increase in rotational energy of carousel?
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Static structure - find a fourth relation
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A transverse wave traveling through a medium versus a particle of the medium
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Calculating Rocket Velocity to Sun
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Need help with the interpretation of this v(t) graph
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Equivalent system (force+couple moment) of a loaded beam
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Special Relativity Time Dilation/Length Contraction Problem
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Uncertainty in the intersection of two lines with error bars
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Charge Density on a Conductive Slab
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Magnetic energy density, and pressure due to magnetic force
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Energy loss of damped oscillator
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Conserving Momentum in Emptying a Freight Car
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A slanted cylinder full of liquid about to fall
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Adding vectors in this 3-D problem
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Finding the velocity of a car in a different frame of reference
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Newton's First law of motion -- Boy jumping vertically on a moving train
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How Do You Calculate the Radius of a Wire Using Electrical Resistance Formulas?
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What is the net force's direction of an object at its highest point?
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Some help in understanding energy conservation
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How to solve this balancing exercise? (towing a boat with two ropes)
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Why is the tension in a falling chain not equal to ρgy?
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Two basic diode and capacitor circuits
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Electric field in a rotating rod in a magnetic field
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Electric field at a point within a charged circular ring
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How can one derive an expression for \( w^2 / k \) using \( b, p, l \) only?
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Amplitude of oscillation of a mass which is the pivot of a pendulum
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Expanding explosion from an Asteroid
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Oscillations of a disc with a smaller disc removed (Feynman ex. 17.23)
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Calculate recoil velocity using conservation of momentum
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Does $\frac{\partial^2 L}{\partial q\partial \dot q}=0$?
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Finding the Magnitude and Angle of a Problem: Two Solutions
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How to interpret the center of aero forces on a sports car?
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Understanding Acceleration and Center of Mass in Shock Absorption
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Correlating albedo with temperature?
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Calculating Forces on a Moved Body
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Deriving the Differential Position Vector in Cylindrical Coordinates
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Two Pulleys, two weights and a string
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Where am I going wrong with this vector addition?
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Stopping a Bullet: Calculate umin and xf
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Find the value of ##\theta## when the Vx and Vy components are the same
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What is the final angular displacement of a disk hit by two masses?
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Comparing energy lost by the battery & energy gained by the capacitor.
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How Do Engineers Design AntiNoise to Effectively Reduce Ambient Noise?
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Special relativity - Trivial exercise with spacetime interval
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Two Pulleys, Two Strings and Two Blocks
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Number of moles necessary to get piston back to initial position
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Propagation Wave Expressions and Wave Velocity
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Induced current in a wire loop embedded in a changing B-field
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Lenz's Law and Faraday's Law clarification
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Tangential velocity of rotating rod
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How to find coordinates of a system (I am taking cylinder now)?
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