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.
Why Doesn't My Potential Difference Calculation Match the Given Answer?
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Power input of a Force acting on a particle moving with Velocity
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Calculating Duck's Displacement in 2.52s with F=ma and Kinematics Equations
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A bullet strikes a wooden block
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What are the final velocities of two balls after an elastic head-on collision?
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Tangential acceleration given radius and angular acceleration
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Time it takes for a water tank to empty
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Tension of rope between 2 blocks
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How Do Incline Angle Changes Affect Normal and Friction Forces?
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What Speed Causes Weightlessness on a Circular Hill?
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Finding the normalization constant for a 1-D time independent wave function
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What is the acceleration of the block on the incline?
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Why Isn't the Normal Force on the Sled 250 N?
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Centripetal acceleration A jet flies in a vertical circle
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Calculating Velocity in a Venturi Effect Nozzle: Converting Units
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Finding Lengths of Springs with Three Identical Masses
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How Do You Calculate Tension and Friction in a Pulley System?
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Is my book making an algebra error?
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How do you show the efficiency of an engine is x?
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Rotational problem another time (this time not the center of mass)
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How Do You Calculate the Speed of a Falling Chimney's Center of Mass?
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Determining Height of Pendulum Attachment Point
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Hydrodynamics : Calculate force exerted by fluid on Tube
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How Does Kinetic Energy Affect a Bouncing Ball's Height After Multiple Bounces?
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Question about homework manipulation
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Circular motion Work Energy problem
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Discovering Constant Speed in Bosun's Chair Problem: Mechanics and Techniques
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How to change an electric field?
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RC circuits - Current and electric potential
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Bump detection using accelerometer inside car, estimating suspension damping
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Units of slope in a tension vs θ (theta) graph
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Need Help- Centripetal plane problem
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Maximizing Sand Pulled: Angle & Weight
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OM: Proving the Thermodynamics Relation for Ideal Gases Using Maxwell Relations
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What is the period of rotation for three stars forming an equilateral triangle?
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Need Help- Finding the tension and Force wind using Newton's laws
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What is the Center of Mass of an NH3 Molecule?
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Catapult project junior year high school
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What is the distance between two ships and the correct solution to calculate it?
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How Does Doubling Internal Energy Affect Pressure in a Sealed Container?
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What is the Electromotive Force Induced in a Moving Coil in a B-field?
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Calculating Distance from a Charged Particle using Electric Field Strength
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How Does Cutting the String Affect the Motion of Air Track Gliders?
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Minimum distance between two satellites
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What is negative mechanical Power?
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Calculating the Mass of Earth's Atmosphere: What Assumptions Were Made?
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What speed would a satellite have to be placed to make it into orbit?
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X-Ray Spectra and Photon Energy
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Solving problem dealing with PE + KE WITHOUT mass values?
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Time constant in RC AC and RL AC Circuits?
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Kinetic Energy of 50kg Block Accelerating 10m Up at g/10
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Basic momentum/loss of energy question
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Distance Time Graph: Acceleration & Velocity Calculation
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Mechanical energy and frames of reference.
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How Do Forces on a Cantaloupe and Table Change in an Accelerating Elevator?
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Work and energy (change in potential)
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How Do You Calculate Average Velocity and Relative Air Velocity?
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How do I calculate the force of an object attached to a spring?
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Projectile Motion of broad jumper
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How Do You Calculate Speed Without Time in a Bungee Jump Scenario?
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Conservation of angular and linear momentum
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Will I be able to get anything out of you guys this time around?
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Isobaric process. Find magnitude of heat transfer
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Object Launched from Origin: Time to Reach the Roof
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Torque,rotational motion of an object
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How Fast is a Spaceship Crossing Earth's Orbit?
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2 Vectors with Angles acting on an object
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Average force applied by bullet
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How to find the weight of an object given the force
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Why Is Average Velocity Calculated as the Mean of Initial and Final Velocities?
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Converting Measurements for Paint: A Unit Conversion Challenge
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What is the impulse exerted by a bullet on a block?
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Carnival ride : chair swings from cable attatched to overhang, spinning on axis
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Problem with Newton's second law
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Need Help Applying Bernoulli's Equation to a Fluid Mech Problem
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How Does Momentum Conservation Apply in Nuclear Disintegration?
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Finding work with given horsepower
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How Do Elastic Collisions Affect Velocities and Center of Mass Movement?
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How Can I Calculate the Frequency of the Left Pendulum in a Coupled System?
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How Do You Calculate Rocket Trajectory and Impact?
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What Determines the Rider's Fate in Different Speed Domains of a Vertical Loop?
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Calculate rpm with circular motion
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Explaining the Impact of Momentum and Collision on Damage in Head-On Collisions
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Solving a Simple Problem: Frustration with Mechanics
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Solving Space Mechanics Homework: Dry Mass Fraction, F
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Thermodynamics: Waste heat and total ice converted to steam
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Critically damped oscillator: Classical mechanics help
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Grade 11 Question: finding launch angle
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Dynamics - Motion in a Plane, Problem
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Sled being pulled by two people. Minimum tension and acceleration.
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Help with final velocity of a rocket
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Which point to sum the moments?
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How Do You Calculate Rocket's Maximum Height and Velocity?
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What Causes T2 and T3 to Have No Torque in This Picture?
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Minimum angle to prevent sliding (Friction & Forces)
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Understanding Kirchhoff's Laws: Solving a Parallel Circuit Problem
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Maybe a dumb question on standard error in equations
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Force of friction on different times
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Calculating Initial Speed for an Olympic Basketball Shot
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Elastic vs. Inelastic Collisions: Which is Better for Diverting an Asteroid?
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