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 Do You Calculate Net Force on Charges at Triangle Corners?
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Solving the Rocket Ship Problem
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How Does Force Affect a Duck's Displacement in Water?
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What is the Force Exerted by a Child on a Swing Chair?
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Vectors and Components: How to Add and Multiply Vectors
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Car breaking speed physics priblem
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Discover the Net Force on a Quarterback Tackled by a 110 kg Linebacker
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Spaceship Time dilation problem
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GRE Subject Questions: Learn How to Solve Them with Expert Tips
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Coefficient of static friction with brakes
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Question about significant digits
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Is Velocity Constant if AxVx + AyVy Equals Zero?
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Kinematics of rolling ball question
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Particles moving along the axes.
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Trig Problems for physics course
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Can someone tell me if I made an error?
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Where does the rocket land relative to the cart?
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Does 'extended' mean 'larger' in this case?
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Motion of a freely falling object
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Speed/energy problem, could someone please check my work
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Don't know where to start on this problem
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Change in gravitational Potential energy
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What is the Direction and Magnitude of the Force on a Hanging Rope?
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Set Upward Accel. Then FreeFall ?
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Physics 100: Solving the Overtaking Problem of a Car and Train
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Baryons and their quark constituents
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How Do You Calculate the Final Displacement Angle of a Roller Coaster?
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Help with an airplane problem (relative velocity)
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Finding out how many electrons have passed a point in the circuit
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Velocity and Momentum: Understanding the Basics
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Conservation of energy as a function of Time
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Finding Displacement: Psychic Squishy Sounds Band's Tour in Texas
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What is the Average Velocity and Speed of a Moving Ball?
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Easy homework problem I know, how original.
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Questions about charge flow and electricity
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Finding the Electric Field Twice: Solving for Potential
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Null result of the michelson morley experiment
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Kinematics projectile question
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Simple Vector Calculations: Man Walking, Sign Lifting, and Jogging Displacement
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Solving the Uniform Rod Problem: Calculating Force on a Point Charge
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Why is the time interval between the events in frame S larger than in frame S'?
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Calculate your average velocity from pillar to post
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Solve for Speed: 9.0-kg Box Sliding Down Incline with Friction Force
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General Force and Motion Question
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Significant Digits: Questions & Answers
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Explaining Centripetal Force: Why It Must Be Radial & Towards Centre
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Kinematics - Find velocity of the car
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What is the Symbolic Meaning of the Two Vertical Lines in Grid Diagrams?
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How to Create an Average Velocity vs. Time Graph from Collected Data Points
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Please help: object falling past window, time given
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Help with an electrostatic problem
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Solving Vector Division: Breaking Down the "12 Left" Answer
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How much water is in a typical cumulus cloud?
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How High Can a Garbage Can Ride on a Geyser's Force?
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How Do You Calculate the Direction of a Cross Product Vector?
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Mass suspended on a spring question
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1 of 3: Force of Gravity and Acceleration. Help
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Surface Tension: Calculation & Unit Conversion
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Which Electromagnetic Radiation Has the Greatest Photon Energy?
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Train pulling caboose - forces and friction
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Finding force given constant velocity and mass?
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Calculating Velocity of Constantly Accelerating Object: A Physics Lesson
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Aluminum wire stretched four times longer, resistance?
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Modern Physics Homework: Inertial Frame S' & Event A/B
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Calculating Angular Speed of an Alpha-Particle in a Magnetic Field
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Motion in Two or Three Dimensions
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Quick Equations of Motion questions (2). Rxn time; deceleration
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Finding g given height & time
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Calc. the car's average acceleration
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Finding the Aperture Size for 1-Arcsec Resolution at 500nm Wavelength
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Question with associated uncertainty
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Solving Vector C: 3.00A - 4.00B
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Initial velocity, acceleration due to gravity question
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Calculating Electric Field at a Point from Multiple Charges
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Colloidal Kinetics: Fick, Einstein & Stoke's Laws
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Can Zero Vectors Exist in Vector Equations?
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Calculating Ball Velocity with Momentum Principle: Newb Question Answered
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Is the ratio of the two times in the right direction?
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What Forces Influence a Paper's Leap Toward a Charged Comb?
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I Keep Getting 2 Different Answers.
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How to Calculate the Inclination of a Tilted Table Using Physics
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Estimate the power required to operate the tow
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Solve the Tricky Motion Problem: Daredevil's Canyon Jump | Physics Homework Help
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What Acceleration Did Colonel John P. Stapp Experience When Stopping?
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Vectors (Direction of Resultant Displacement)
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Calculating Velocity: Car and Earth in Motion – Help with Velocity Questions
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Motion in Two Dimensions (Vectors)
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Please check my work on this short calc (?) prob
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Understanding Vector Magnitude and Components: Common Questions Answered
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Understanding the Pendulum Equation: How Do We Go from Slope to Equation?
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Would someone be kind enough to check this for me?
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Flywheel slows due to friction in its axle bearings
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Solve Throw Up Problem: 15m, +12m/s & -12m/s
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Understanding Instantaneous Acceleration and Velocity in Physics
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Find Largest Angle of Slope for Car w/ Front, Rear & 4WD
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Easy thermo problem: gas expansion
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Finding the angle of a falling person on a sphere
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Interactions and External Forces in Physical Systems
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What Are the Solutions to This Two-Block System Problem?
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Electric Field question (two of them)
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