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.
What is the resultant angle of three forces acting on an object?
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Particle on a slope with friction question
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Finding the *Time* it takes for yo-yo to travel 1 meter?
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Newton's Second Law - Polar Coordinates
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Conservation of Mechanical Energy on a Roller Coaster
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How Do You Calculate the Velocity After a Bullet Embeds in a Block?
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The period of the spring without ignoring its mass
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Electric Field Work on Moving Charge
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Analyzing Current in RC Circuits: A Scientific Approach
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Proportions Projectile Motion Problem
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Conservation of Momentum with Collisions
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Calculating Mass using F=ma and Friction
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Alculate the x-component of the electric field
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Calculating Elastic Force and Projectile Motion: Energy/Work Questions
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Simple Harmonic Easy Qualitve problem, something I'm not getting
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Solving for Time: Launching a Ball at an Angle - Homework Solution
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Statics Problem istributed Loads
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Simple Harmonic Motion oscillation amplitude
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Stored Energy Difference Between Capacitors
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Can Forces Acting on an Object Be Zero?
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Acceleration question -- Deceleration of a baseball being caught by a player
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Find apogee distance, speed, and T of Earth satellite
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Gravity Problem two shells, one inside other on particle
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Mechanics, question about generalized coordinates
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Angle of total acceleration of an object in circular motion
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How Does Pendulum Motion Affect Work and Kinetic Energy Calculations?
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Aeroplane Projectile Homework: Determine Velocity
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What Is the Fake Gravity on a Circular Space Hotel Orbiting Earth?
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Simple circular motion conceptual question
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Suppose that you are standing on a train accelerating at 0.1g
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Magnetic field at the center of a loop
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The coefficient of friction by spring compression
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Photon Emission and Energy Levels
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Troubleshooting the Biot-Savart Law for a Circular Loop and Helmholtz Coil Setup
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Why are larger transformers more efficient than smaller ones?
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Did I Solve the Vertical Post Problem Correctly Using SOH CAH TOA?
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What Was the Initial Speed of the Freight Car?
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What is the minimum tension in the string?
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Equilibrium position of a charge between other 2 charges
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Equipotential surface of a infinite plane?
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Horizontal Projectiles. Degree or Radian mode in calculator?
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I knowing what i'm looking for -- alpha particle colliding with lead nucleus
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Statics Question -- Bar and roller resting on a circular surface
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Converting Chord Length to Radians: A Confusing Concept?
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Using Energy Equations to find Final Velocity
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Wave Velocity Calculation: y = 0.02 sin[ pi(30x - 400t)] in SI units
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Special theory of relativity, a collision between two partic
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(Answered) Finding new potential difference after switch is closed?
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Finding the Maximum Positive Transverse Velocity of a Transverse Wave
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How can i find the coefficient of kinetic friction?
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Phase of Simple Harmonic Motion: Determining the Phase at a Specific Time
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Electric field at specific point
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What Angle Does a Bob in an Accelerating Train Make with the Vertical?
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Graph Mass Position vs Time for Springs Assignment Homework
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Equation used to find the efficiency of a kettle
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Vector Calculus to derive Newton's second law
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Impulse and Momentum of an auto
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Why Does the Matrix Element <2 0 0|z|2 1 0> Equal -3a0 in Hydrogen?
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Need help with mechanics statics; finding resultant force
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How to Sketch a v-t Graph from a p-t Graph Using Tangents?
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Couple on rod in electric field
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Finding the work done on a cutting tool
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What is the Velocity of the Ball Leaving a Racket Moving at 60 mph?
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How Do You Calculate Turntable Rotation and Acceleration?
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What are the velocity & position of an object as function of time?
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Understanding Work, Energy, and Displacement in a Spring System
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What is the volume of air swept out by a moving plywood sheet on a track?
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Resistance, wire thickness, fuses, current -- Confusion
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Derivations of specific values in Physics
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Wavelength, period of vibration in seconds
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Thermistor cooled in water and effect of temperature
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Ratio between electron to proton
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Finding the Height of a Dropped Flower Pot
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Vessel with liquids having different refractive index
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Rotation period of electron orbiting a proton
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Sinusoidal alternating current/Homework
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Solution to Force & Friction: Find Time for 4kg Block to Drop 7m
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How Do You Calculate the Shortest Flight Path Between Two Points on the Globe?
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Electric Potential Energy and micro-joules
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Velocity/Acceleration relation w/ constants
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What Happens When ω²LC=1 in an RLC Circuit?
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Rollercoaster normal force question
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Cylinder over a step -- Is the normal force radial?
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Work and Energy of carnival dinner
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Crossed Belt and Rotational Dynamics: Solving for Angular Velocity and Torque
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Calculate the velocity of the system After the collision
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Acceleration Equation - Two Objects Moving Forward; Meeting Point?
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Work needed to move alpha particle
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Amount of force a motor can make in 35s
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Calculating Force Table Vector Equilibrium
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Calculating Pluto's velocity (angular momentum)
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Cylinder & Torque: Find Maximum Force w/o Rotation
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Use superposition to solve for vs in the circuit
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Two cans rolling down a ramp with the same mass
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Clarification on different kinds of acceleration
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Finding the Unknown Force: Acceleration and Net Force Calculation
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Sound: Stones falling from cliffs
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Mirror 4-Momentum: Find Frequency Change on Reflection
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Finding electric field of spherical shell
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What Is the Lorentz Boost Speed for Time Dilation and Spatial Separation?
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