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.
Understanding Tension Forces: How to Calculate and Measure Them
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Why is (Kinetic friction)= fk≤fs (Static friction) ?
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I really with these questions
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Work: Is Moving an Object Back to Its Original Spot Worth Anything?
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Comparing Net Forces: Hammer and Feather in a Vacuum
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Mechanics Of Materials Stress Problem
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Change in Velocity Homework: Solving the Vector Difference
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Physics coefficient of friction question
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What Is the Normal Stress in a Prismatic Bar Under Tension?
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Why we write W/L = 50/0.5 not W/L = 100?
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Solving Impedance Diagrams: Finding i(t) with XL = ωL
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How can power be the same on two inclined planes with different angles?
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How is the tension of a rope calculated in a climber's FBD?
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Help Solving Dynamics Problem: Skier Coasting Down Hill
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Understanding the Concept of Rolling with Slipping
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Why Is Tension Zero at the Free End of a Rotating Rope?
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Magnetic Flux of a Wire Sliding on L-Shaped Rail
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Thermodynamics: First law and work definition
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Kinetic energy of two different masses (ratio)
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Calculate the net force on square loop (Magnetism)
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Horizontal force on a post in a Hammock
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Uniform Circular Motion extended response
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Fnet = ma Ff = -0.3375/0.08 = -4.219N
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Particle with horizontal velocity and vertical acceleration
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High School Physics: Projectiles at Angles
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Thermocouples: Advantages and Disadvantages
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Vertical acceleration and horizontal velocity
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Conceptual question about blocks and friction
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Net force on a charge - Coulomb's law
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Block attached to spring - calculate how far it will move
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Simple DC motors Current, Torque, EMF and Faraday's Law
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Energy required to heat up a 4000 cm^3 of air to 1500 Celsius
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Calculating the net force acting on a object from diagrams
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Acceleration due to Gravity on Mars
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What is the tension in a pulley system with multiple weights?
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Thermodynamics: Calculating the work done
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Understanding the Motion of Electrons in a Magnetic Field
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Calculating Heat Required to Warm Earth's Oceans by 1.0 °C
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What is the velocity of the center of inertia after bar 1 breaks off the wall?
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Understanding Electricity and Circuits
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How do curve speed and incline angle affect the downward force on a car?
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How do lever arms affect the velocity of objects?
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Acceleration of wedges and particles
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Invisible Charge: Solving for Equal Distance in Coulomb's Law
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Why the light increases when Prof. Lewin touch the end of the tube?
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How many ways to sum vectors in a plane to zero
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Why Plot T² Against 1/K for a Straight Line Graph in Oscillation Studies?
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Magnitude of force to keep stick in equilibrium.
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Terminal Velocity Given Acceleration at Instantaneous Velocity
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Why voltage in a short circuit is 0?
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Zero Group Velocity: What Does it Mean?
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How? Which Trig Identityis that?
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Hookes law: Calculate the work done by compressing a spring
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Momentum Conservation and Rebound Velocity Comparison
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What is the tension just before and just after touching the nail?
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How Do I Solve These Equilibrium Equations with T₂ and T₃?
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Calculating Carbon-14 Activity for Archaeological Samples
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Calculating Heat Energy Changes in a Water and Ice System
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Why is the Integral of Force Over dx Equal to Kinetic Energy?
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Solving Momentum Questions: Find Speed of Toy Car After Pellet Impact
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Drift current Is of PN junction under open-circuit conditions
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How Do Two Masses and a Spring Behave on a Frictionless Surface?
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What Are the Key Challenges in Understanding Particle Physics Homework?
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Solve Uniform Motion: Trooper Interception of Cletus in 4 Secs
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Conditions for pulleys and strings
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Calculating Time Difference in Pursuit Situations
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Solving Momentum Questions: Inelastic Collisions
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Angle when a projectile is launched at a height from the ground
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Looking for an algebraic definition of work.
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Penetrating power of radiation questions
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Minimal angular velocity of a swinging homogenous stick ?
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Is it possible electrons fallen into holes and go straight to collecto
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Show that the forces form a couple (algebraic)
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Newtons cradle Conservation of Momentum
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Saving Electrical Energy with a Heat Pump: 75%
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What is the speed of a cylinder rolling down a hill?
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Effects on water level when a sphere is replaced by a new solid sphere
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Finding Gravitational Acceleration from a Slope
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Solving Ball's Wall Impact Time w/Force & Mass
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Angular momentum operators on matrix form
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Electric Potential Problem Involving Uranium Atom
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Velocity of a fluid within a pipe
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Projectile Motion: Finding Total Flight Time of Lettered Images
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What is the x>0 mean here? standing wave equation find nodes?
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Calculating gauge pressure in lungs to produce certain speeds
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Solve Impedance Problem: 50nF Capacitor & 47kΩ Resistor
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Compare Velocity of Center of Mass - Two Hollow Cylinders
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Calculate displacement [Two Dimensional Kinematics]
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Electric charges and conservation of energy
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Find Tension in String Connecting Two Charged Spheres
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Linear and Volume expansion Problem
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Help with a volume expansion problem
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Solving Johnny's Swing Height Puzzle: Can You Get 1.4 Meters?
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Is My Newton's Law Homework Answer Correct?
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How Do I Convert v^2/r Into v?
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Answer: Understanding Electron Volt Energy for X-Ray Machines
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Several exam questions I got stuck on
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D and E at boundary (dielectrics)
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Oscillations and waves-reflection through the surface of a medium
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How to adjust cars diagonal weight without scales?
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