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.
Getting the truck over the crossing
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Capacitance of three concentric shells
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Rotational problem of arm - wrestling
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Same Charge, Same Mass? | Subatomic Particles
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Intro Physics -- Cart launched by a spring slides up a ramp...
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Calculate the bouyancy of two spheres joined by a rope submerged in seawater
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SHM - Pendulum and Mass on a spring
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Find the amplitude of a sinusoid given frequency and time after zero-crossing
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Coefficient of Friction question for a cart going down a wooden ramp
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Speed of Message Relative to a Space Station: Relativistic Addition
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Electromagnetism question -- Forces between two current carrying wires
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When is the acceleration due to gravity negative and when is it positive?
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What Am I Doing Wrong in Calculating Potential on a Grid?
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Aberration and Doppler shift in Special Relativity
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Why is the thrust equation same under gravitational force?
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Finding weight of a beam using torque & equilibrium?
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Question about the Product of Inertia for a Rolling Disk
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Physics Practical Investigation using a mass, a fulcrum and a plank
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How to Derive Resonant Frequencies for Planar Mirror Resonators?
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Solve Simultaneous Equations: Loop/Junction Eqns
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Can you help me explain how to find angular velocity?
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Double Slit Diffraction with Angled Light
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Calculating Chromatic Aberration
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Can Homework Help Calculate the Electric Field from Two Point Charges?
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Why is 2.4-L Max Vol V1 in Diesel Engine Cylinder Example 9-60?
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Calculating Charge of an Electron w/ the Millikan Oil Drop Experiment
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A cylinder of snow rolls down a hill gathering more snow -- calculate its speed
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Speed of cylinder rolling along a horizontal surface gathering snow (Solved)
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Gravitational Forces on three masses at the corners of an equilateral triangle
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Derivation of uncertainty formula
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Correct approach in resolving a force into its different components
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Energy transfer/loss in catapult
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How did Rutherford prepare the gold leaf for the gold leaf test?
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Statics problem -- Hinged members and anchor points supporting a mass
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Confusion on mechanics problem involving cart, blocks, and pulley
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Revisiting the Feynman Ball on an Inclined Plane Problem
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Question about this Acceleration vs. Time graph
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Oblique slab of conducting material placed in a capacitor
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10
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2D Fraunhofer-diffraction with infinitely long slits
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9
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Confusion on relative velocity sign
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Computing entropy change of ideal gas during heating
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8
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Minimum resistance to prevent overheating in AC circuit
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Calculating Net Torque in a Rotating System
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Constructive Interference from Speakers on an x-axis
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Finding electric field between two conducting plates using Gauss' law
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Understanding example in Wikipedia entry for open circuit voltage
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Voltage in a simple circuit (MITx 6.002, Circuits and Electronics)
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Converting Voltage into Pressure
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Proper use of inequality symbols in equations to do with circular motion
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Q： Rankine cycle pump work Integration
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How to find the center of mass and unknown weight
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Density of Flow Along a Tube Under the Action of Advancing Piston
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How to calculate the wind speeds produced by an ionic thruster
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Pressure in fluids and Archimedes' principle
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Vertical projectile motion with quadratic drag (sign convention)
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Find velocities when a mass leaves a system of a rod with two masses
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Calculate the volume integral over a cone of height h and radius r
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Electromagnetism Help: Get Unstuck Now!
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Location of point mass based on graphs
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Correct statement about thermodynamics process
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Image distance of a Keplerian telescope
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Microwave standing wave calculations (max/min Intensity, Wavelength)
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Multipath Microwave EM: Max & Min Intensity Regions
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What is Velocity.length_squared?
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How to calculate the wind force acting on a water drop?
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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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