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.
How to Calculate Change in Wall Thickness Under Axial Compressive Load
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The physics of wave properties on a string
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Calculate the average recoil force exerted on the weapon during that burst.
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Need help with combination of dot product and cross product question
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Proof of sen² 25º + cos² 45º + sen² 65º = 3/2
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Work and Distance: Is Work Done Without Acceleration?
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Integration Problem: Solving \oint e-ax^2dx = 1/4\sqrt{}\pi/a^3
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Finding Friction force impeding boxs motion
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Forces AND Friction AND Motion O MY
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Calculating Coefficient of Friction for a Sliding Hockey Puck on Ice
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Forces question. please take me through this
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Freight car-caboose collision finding mass without velocities
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Minimize Tension of Mass m Hanging from Cords
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Calculating a magnetic field at a given point
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Calculating Escape Velocity on the Equator: Is It Possible?
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Motion in a Plane Homework: Thrust Force, Angle & Burn Length
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A puck slides a total of 12m: Problem relating kinteic friction to Newton's law
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Is the Mass of the Second Person Required to Determine Force?
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Solving for When Ball is 25m Above Ground
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Meaning of Gravitational Field Outside Uniform Sphere
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What Causes a Motor to Draw More Current Than Expected?
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Projectile motion - Finding velocity (not given time or angle)
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How Fast Does Water Exit the Sprinkler Holes According to Bernoulli's Equation?
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Gravitational Potential & Field Intensity: Example When Zero & Non-Zero
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What Is the Coefficient of Kinetic Friction on a 40 Degree Incline?
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Solve Physics 2 Lab Problem with Attached Help - Expert Tips Included!
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Struggling with Homework Equations? Get Help Here!
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How Do You Calculate the Time Constant of an RL Circuit?
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Magnetic field between two long, straight wires
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What is the Correct Way to Calculate Average Force of Impulse?
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How Does This Basic RC Circuit Function?
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Elastic Collision: Contact Time?
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How Does Inductor Behavior Affect Circuit Current at t = 0.224 s?
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Newton's Third Law Tire on Road Question
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Rolling puck on a spinning disk
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Newton's 3rd law, tension, friction
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What Are the Physical and Chemical Properties of NaOH?
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Solving for the Direction of an Airplane in a Windy Flight
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How do I simplify this resistor circuit for my homework?
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3 balls are launched off a tall cliff with the same initial velocity
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Calculating Frictional Force on a Ladder: Torque Problem and Solution
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Nonuniform line of charge, find the electric potential
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What is the change in period of a pendulum with a temperature-dependent length?
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Calculating the magnetic field
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Solving Frictionless System: Wood Block & Projectile
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One seemingly easy problem. Please help due soon
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Falling meter stick on a frictionless surface
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How to Find the Acceleration of a Block and an Inclined Plane?
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Understanding Free Body Diagrams: How to Determine Angle Placement?
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Period of Oscillation of a Meter Stick
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Trajectory and Force Problem: shot putter launch
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Distance After Release- Problem on Forces
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Curious about average velocity (v bar)
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Would you rather hit another car or a tree?
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A car goes around a vertical circle (Uniform Circular Motion)
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Understanding Special Relativity: Solving for Proper Distance and Lifetime
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Finding Initial Velocity and Angle in 2D Kinematics Problem
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Integrating cos^2(x) using two methods: substitution and integration by parts
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How Do Friction, Tension, and Pulley Dynamics Affect Acceleration?
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Block resting on slop with friction - statics
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Motion with Constant Acceleration
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Father and Child Cart Spin: Calculating Rope Tension
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Calculate Speed of Exhaust Gas in Rocket Propulsion
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Finding the inertia of a tilted cylinder
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Painter on a balance beam (rotational motion and Torque)
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Comparing Rotational and Linear Motion - block vs. disk vs. ring
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Momentum questions - A-Level onwards standard (formulas and explanations needed)
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Sign of voltage across inductor
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What Happens to the Puck's Speed and Trajectory after the Weight Drops?
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Calculate the centre of mass of the object shown below
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Interacting Systems - The Sled Dog
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Circuit with switch resistors and capacitor
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Why Can't Observer See Image 4 & 3 in 2 Plane Mirrors?
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Help with classical mechanics question
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Newton's Second Law for a Single Force
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Projectile Motion Help: Finding Speed with Horizontal and Vertical Components
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Force on Kneecap: Find Magnitude & Direction
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What is the average force exerted on a 0.54kg ball that falls and rebounds?
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How Does a Car's Acceleration Affect the Angle of a Hanging Air Freshener?
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Calculating the coefficient of friction
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How Do You Calculate the Force Needed to Pull a Box Up a Ramp at Constant Speed?
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Momentum: A bullet passing through a wooden block on a frictionless surface
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How Do You Calculate Frictional Force for Moving Boxes?
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Magnitude of the Velocity- Projectile Problem
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How Far Does the Boat Move When Juliet Joins Romeo at the Rear?
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Energy (Potential, kinetic ) So stuck
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Calculating y-Coord of Center of Mass in Unique Shape
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How Should Logs Be Arranged in a Wheelbarrow to Minimize Back Strain?
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Distance Traveled By A Car-Kinematics Problem
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What exactly is a resonance frequency?
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Inductance and RL circuits help
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Where is the point where the Earth's gravity is cancelled by the moon?
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Conservation of momentum theoretical question
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Find current generated from photoelectric effect.
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Merry Go Round (Centripetal Force)
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Calculating Force in a Human Cannonball Act: How Is It Done?
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What is the Missing Information in Determining Wind Speed and Direction?
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Solving AP Physics Problem: Vector Addition/Subtraction
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Kinetic Energy - Spring Stiffness
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Velocity of bullet fired from a gun
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