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.
Force NWhat is the significance of the little k in Hooke's Law?
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Consider two balls on an inclined track with a constant angle
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2D Friction-Finding the Force of Friction without Mu
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Making sense of Newton's Third Law
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A ball is dropped from a height of 39.0 m.
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Calculating Average Force for a 1,662 kg Car in 19 secs
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Fluid dynamics: Knowledge continuity equation
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Horizontal Acceleration of a Stone
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More theoretical questions about acceleration and velocity
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How to Calculate Angular Momentum ?
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Question about net force/acceleration/constant velocity
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Relative Speeds in River Crossings
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Determining the Height of a Building
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Why don't two objects bump into each other because of this gravity?
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Cat dropped from a Shelf, deceleration time?
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Finding Resultant Vector C with Given Vectors A and B
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Fictional force problem given a slope(grade)?
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Calculate Pipe Sized Based on Pressure Differential and Flow Rate
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Are Your Moment Calculations for Bent Bar Reactions Correct?
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Faraday's Law of Induction - Current in Multiple Wires
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Calculating the Speed of an Object Launched by a Spring Catapult
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How Do You Calculate Photon Flux from Apparent Magnitude?
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Heisenbergs uncertainity principle for an electron
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Calculating Distance to Home Plate in Projectile Motion
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Calculating the resistance when the switch is off
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Three forces on a box in different directions what is the acceleration
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Why is the Time Period of a Pendulum & SHM Different?
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Finding the force from two charged rods one beside the other.
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Projectile being launched from ground level
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Plot motion of particle with constant speed and angular velocity
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How Does Background Star Distance Affect Parallax Measurements?
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How can I increase the distance of a catapult launch with a hollow ball?
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Finding initial velocity for projectile motion at 0 degrees
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Got the answer, not convinced possible in reality?
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How Do You Calculate the Coefficient of Kinetic Friction on an Inclined Slide?
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Calculating Area of Thermal Expansion for Non-Isotropic Materials
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Solving the Entropy Puzzle: Blundell and Blundell Q&A
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Projectile motion boat gun problem
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Having trouble understanding the dB formula
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Banked Circular Motion without friction
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How can kinetic energy and momentum be conserved in an elastic collision?
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Understanding Superposition in RC Circuits with Kirchoff's Law
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How to Calculate Torque on a Frictionless Pulley with a Load?
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Relationship between pressure and altitude.
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Projectile motion on an Inclined Plane
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Travel Sound Wave: Determine Wavelength, Frequency, etc.
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Projectile motion with differing heights
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Simple Generator - Calculating N Loops
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Object suspended by two cables, what are the tensions of each cable?
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Complicated Physics problem involving velocity and acceleration
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A plane releases a water bomb after reaching a certain altitude. Find Angle
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Newton's 2nd Law Lab: Keeping Mass Constant?
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Projectile Motion soccer ball Problems
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Resolving vectors problem (I guess)
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Potential Energy, Springs, and Friction
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What is the Velocity Vector of an Object After Undergoing Acceleration?
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Charge particle between 2 paralleled plates
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Angled Projectile at an elevated height w/o a given angle
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Electric field necessary to create a spark.
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Calculating torque when the lever arm has mass
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Force required to keep block from sliding down (check)
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Special Relativity Time Dilation and Distance Contraction
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Charges at the corners of a square.
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Proving Existence of Linear Mapping with Kernel in Subspace S | Helpful Guide
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Calculating resultant force of friction from rope and bar.
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Question about basic Circuit, parallel and series connect
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What is the force on the resting ball from the two wooden boards?
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Finding graphs from motion model
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A mass on a spring with a constant of 3.24
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Solving Tennis Physics: Force & Acceleration
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Is ΔE the Same for Spontaneous Isobaric and Reversible Isothermal Expansions?
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Calculating Airplane Velocity and Heading with Wind
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Determining the weight and angle of an object - Help please
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Calculating Acceleration and Tension in a Simple Force Question | Homework Help
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Coefficient of static friction.
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Maximum velocity by compressing spring
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Projectile Motion: Find Velocities and Angles
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Finding the mass of a sphere with uniform charge density
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Projectile motion: Finding flight distance with air resistance
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Relative velocity practice exam question
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Why doesn't the rope break when Harry is supported by it?
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Springs in a car (damped harmonic oscillator)
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Multiple choice question on the absolute uncertainty?
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Finding angle of a reflected isosceles triangle
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Train traveling at relativistic speeds - Finding velocity.
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Thermodynamics - Entropy/Temperature question
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Mechanics: Calculating the minimum height for a bullet to launch from to hit a target
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Prove Electric Field Lines Go from High to Low Voltage Sources
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Mass on Incline Homework: Solve Tension in Rope
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The velocity of a particle at the origin.
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Solving a 5kg Object's Frictionless Pipe Homework
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Really in finding the acceleration for built boxes.
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Calculating Amplitude of Transverse Wave
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Maximum Range of a Ballista Arrow: Accounting for Realistic Factors
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How Long to Catch a Drifting Boat on the Deschutes River?
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Help finding Tension on a hanging bag
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Calculate Planet Radius: Trig & No Calculator
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Charge on a parallel plate capacitor
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Help with senior high school physics problem please?
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Kinematic and Projectile motion equations
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