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.
Calculating Average Acceleration of a Particle Moving in a Circle
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How do we obtain an ampere-hour rating given voltage and watt-hour?
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Two charged beads with a third bead in equilibrium
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Water wheel and hydroelectric power question
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Confused about direction of electric field
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Calculating Tension in a System of Trolleys
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Speed of a star in Special Relativity
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Application of Newton's second law to a horizontal pulley
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Pressure difference between the top and bottom surfaces of this cube
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Signs of work done and delta K.E.
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Velocity vs Speed (What's more relevant here?)
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Wind drag problem with a ball hanging on a rope
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Physics IA: Distance B/w Pendulum & Alum. Block, Finding Damping Coefficient
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[Kinematics] Calculating the maximum height reached by the ball
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Solve Disk & Coil Spring Motion: Get Amplitude Help
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How much time do I have to catch a coin?
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Find Universal Gravitational Constant w/ Torsion Balance Timelapse Recording
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Calculate Distance Traveled: Instantaneous vs. Average Velocity
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Interference of 2 spherical waves
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Find Isobaric Expansion & Pressure-Volume Coefficient for Solid
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Finding gauge pressure for gas inside light bulb as it heats up
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Combined Rotation and Translation of a Rectangular Plate
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Why does ##Sigma T. x=0## hold for tension
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Finding acceleration of the pulley block system
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How Can I Measure Kinetic Energy in a Non-Inertial Reference Frame?
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Conventional current definition and a variation on that definition
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Runner Impulse Question: Estimate Power of Runner Leaving Blocks
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Coplanar system or Convergant forces?
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Determining the interval between two F1 cars
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How Do You Calculate Capacitance in a DC Circuit with a Fully Charged Capacitor?
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Why Won't a Disk Rotate on a Frictionless Bearing?
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Simple question regarding weight flow rate and specific gravity
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Physical Pendulum - Theoretical equation
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Fluid Dynamics - Using the Manometer Equation
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Average Speed Question for a Train that Accelerates and then Decelerates
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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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