Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Net magnetic field due to two wires
- carpelumen
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Archived Are you wondering what you've gotten yourself into with physics?
- ezfzx
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Archived Find MathType Resource: Answers Here
- Oneatatime
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Potential energy of a particle in a system
- Claudia Sanchez
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Newton's Laws of Motion Question
- I <3 Physic
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Moment of inertia about a ceiling fan?
- physicsbaig
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Work done by kinetic friction force without coefficient?
- Jessica Sweet
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Why Does Bulb A Dim When the Switch Closes in a Circuit with Real Batteries?
- Feodalherren
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Conservative force and potential energy
- coconut62
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Train with constant acceleration, catching it with constant velocity?
- timnswede
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Minimum force to push a 200 kg refrigerator across a wooden floor
- mememe1245
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Baseball rolled off 20-foot roof into pool
- Elle1121
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Free particle wave function behavior
- lants
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Finding the tension in a rope when acceleration is balanced
- Shadow236
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Prism : what if incident angle is greater than apex angle?
- adi adi
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2 dimensional kinematics involving a rocket
- TanakaTarou
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Finding normalization constant for wave function ψ(x) = b(a²-x²)
- leehufford
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Static displacement of a spring
- Dustinsfl
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Finding the extension of a spring
- Dustinsfl
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Definition of Electro Motive Force
- adjacent
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Newton's second law with vectors
- Shadow236
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Electric field and potential at the centre of a square with four charges
- JR9
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Look of trajectory of a material point
- Chemist@
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Why is a negative spring constant unrealistic in this system?
- user977784078
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How far up the hill will the projectile land?
- skeer
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Where is the image formed when a lens is placed next to an aquarium?
- franceboy
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Finding electrostatic potential
- ghostfolk
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What is electric potential in a capacitor?
- recomendacion
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How do I find the acceleration in Newton's 3 Laws Problem?
- paytona
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Finding current and potential difference within a circuit
- mathguy831
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Which of these diagrams represent the same circuit?
- Feodalherren
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Length Contraction: Why Must dx be Measured in the Prime Frame?
- Pezz
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Circuit Segment (Two sources with a resistor in between)
- Bluestribute
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Finding the acceleration of gravity given 2 masses
- jg871
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Two Carts attached to a string
- B3NR4Y
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Is the Charge on the Inner Wall of a Conducting Sphere Zero?
- Toddy
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Plotting momentum and potential vs time from experimental data
- tinker99
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What are the correct heights for Tom after a collision with Dan in a halfpipe?
- mcrwinner
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Motorcycle velocity after 500 ft with force F(t)=300(1−0.1t)
- phyziks4lyfe
- · Replies 8 ·
Circular Orbit / Practice Quiz #4, Question 27
- gcombina
- · Replies 6 ·
Action Potential Through Ion Channel, Total Number of Ions Through
- Bluestribute
- · Replies 13 ·
Hydro static forces on curved surfaces
- princejan7
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Find the resistance for maximum power transfer
- MattHorbacz
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Calculate Energy Density of Spherical Capacitor
- AGGENGR
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Relationship of acceleration of masses in pulley
- drragonx
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Conductor with shell problem getting zero as answer?
- AGGENGR
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Where to cut the string for maximum height above circle center
- MattWakes
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Regarding vectors, resultants, and angles
- ble
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Estimate the mass of a spinning ice skater
- spiruel
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Changing Rho, Finding Resistance
- Bluestribute
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How Does an Underwater Current Affect Submarine Navigation?
- andkand97
- · Replies 18 ·
Calculating Electric Field Components for Discrete Charge Distribution
- clb399
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Calculating Electron Acceleration Potential
- gxc9800
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Calculating Time Needed for 10 m/s Increase
- Aamurs
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What is the Tension in a Pulley System?
- Mikey Faye
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Calculating Osmotic Pressure Of Red Blood Cells
- devon
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Finding the Specific Activity of Rubidium Chloride
- Phillyfan321
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Calculating Heat Engine Efficiency: What is the Energy Input?
- kirsten_2009
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How Does Climbing Stairs Compare to Lighting a Bulb in Energy Use?
- kirsten_2009
- · Replies 9 ·
Special Relativity Spaceship Question
- Lucille
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RC circuit, expression for voltage
- nossren
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Propagating uncertainty when calculating acceleration due to gravity?
- Zane
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Designing a +10V Supply with Transistors: A Practical Approach
- irishhockey
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Applying PV=constant to find pressure and volume changes
- Arun Raja
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Finding weight from force components with trigonometry
- Mikey Faye
- · Replies 1 ·
Vaporisation of Water at different altitudes
- Dean Lovett
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Length contraction: Sheldon's meter stick at 0.6c relative to Sally
- Lucille
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Why Does Metal Require More Energy for Electron Emission?
- desmond iking
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Is My Calculation of Lorentz Transformation Correct for Δx and Δt'?
- elevenb
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What is the tension in each cable holding up a 100kg Halloween decoration?
- hamzaarfeen
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Maximum acceleration to prevent glass vase sliding off stacked packages
- hamzaarfeen
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Solving Box Pulling Problem: Accelerating Comics to Stuart's Store
- Evan Johnson
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Frictional Forces: Stacked boxes, pulley with weight.
- Cal Ripken
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Heat Flow Through Rock Layers Problem
- Nexttime35
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Is the 45-Degree Angle Between the Y-Axis and F2?
- Hr0427
- · Replies 5 ·
How Do You Calculate the Waist Radius and Location of a Gaussian Beam?
- danifire2
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Why do both falling balls have the same acceleration as gravity?
- omar1
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What is the Acceleration of Child 2 in a Two-Child Tug of War on Ice Skates?
- DanielC90
- · Replies 11 ·
Gravitational potential energy experiment
- Jimmy87
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Terminal Velocity's Relationship to Mass
- bistan
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How Do I Calculate Experimental Error in X-ray Diffraction?
- Lemenks
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Vector algebra - The velocity is given by
- lilyE
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Force at a particular point on a submerged vertical surface (other than Ycp)
- lechatelier
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What is the Centripetal Acceleration Problem Solution?
- Arun Raja
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Total resistive force by water and air on water skier
- trosenau
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Satellite in Orbit (Quiz#4, 26)
- gcombina
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Solving Archimedes Problem: Rod in Pool
- erisedk
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Energy Dissipation in a Time-Dependent Current Circuit
- DrIxn
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Solving for ds/dt: Is the Answer C?
- Arun Raja
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Velocity of an Object in Uniform Circular Motion
- Argella
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Solving Loudspeaker Delay in 30ms for 5.0m
- toothpaste666
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Relative motion of a cannonball/submarine
- ohphysics
- · Replies 9 ·
Twin Paradox: How Do We Calculate Ages and Coordinates in Different Frames?
- Lucille
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Vector Sum of Forces Experiment
- Kenny Wong
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Special Relativity: Object Motion and Time Dilation
- Lucille
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What is the vertical velocity of the rope just as it slides off the peg?
- SenatorAstro
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Effect of changing target metal to heavier metal in X-ray tube
- desmond iking
- · Replies 11 ·
Revolutions per second for hydrogen molecule
- Effect
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Distance traveled by a block due to unbalanced force
- Romel
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Problem with electric field and potential
- Frank Einstein
- · Replies 9 ·