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.
Calculating Sound Energy Emission from a Point Source with Constant Power Output
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Deriving an equation vs memorizing a formula
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Are you positive about part 2 in Helicopter Kinetics and Motion
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Accident Reconstruction; Work-Energy Problem
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Need an explanation on how to do a question applying Newtons Laws
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Kinematics Collision Question: Find Minimum Separation and Sketch
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Calculating Moment About Axis: A Chiropractor's Procedure
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Question about terminal velocity
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What are some biodegradable egg drop project ideas?
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What is the magnitude and direction of the resulting force?
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What Is the Maximum Height of a Ball Thrown at 20m/s and 30 Degrees for 3.0s?
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Find net force, given velocity?
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How do I find acceleration of two block.
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Displacement Vectors: Understand x, y, z & i, j, k
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Rugby Player Problem: Solve for Time to Tackle
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How Do You Calculate the Tension in Cables Supporting a Suspended Loudspeaker?
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Can One Ounce of Gold Really Be Pulled into a 50km Wire?
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Calculating electrons emitted question.
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Does the acceleration of free fall take air resistance into account?
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What is the charge on the capacitor being charged up by a 25 V battery
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How can the current density and magnetic field affect Earth's total current?
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Potential energy for magnetic fields
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The change in velocity betwen two points
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Find out the correct pressure difference if the level of the liquid
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What Determines the Upward Movement of a 1m^3 Balloon in Water?
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Question about a car turning on ice.
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Speed - the bus jump in the movie
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What factors determine the acceleration of vehicles in a head-on collision?
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Discover the Magnitudes and Angle Between Two Forces: Resultant Forces Homework
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2 dimensional motion - calculate magnitude of acceleration
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2 dimensional motion - calculate particles position
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One brick on another (friction, laws of Newton)
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Gravitational Potential energy
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How Do You Calculate Velocity in a Horizontal Slingshot Setup?
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Sorting Fresh & Boiled Eggs with an Inclined Plane
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How high does a rocket go with a constant acceleration of 25m/s^2?
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Equilibrium Problem: Help Solving
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Finding Lanch Angle (without initial velocity)
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Force on a Current-carrying loop
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A doubt about frictional forces
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Drawing Out Superman's Velocity Problem
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Angle of Deviation: Plane Mirror Reflection
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Can AP Shell Pierce 2 Steel Plates? | Work Questions
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What is the Correct Center of Mass Calculation for a Man and a Boat?
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Ranking materials in order of their refraction index.
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Sound Waves Conceptual Question
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Hot-air balloon (kinematics question)
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Trajectory, Wind Resistance, and Acceleration
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Vectors & Planes: Proving Perpendicularity to Plane Passing through Origin
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Solving Velocity-Time Graph Homework: Egg Dropped/Thrown from Bridge
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A falling flower pot (kinematics question), just need slight correction
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What is the third force needed for equilibrium?
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A child trying to catch an ice-cream truck (kinematics question)
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Kinematics question (uniformly accelerated linear motion)
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Grade 11 Physics: Projectile Motion Calculations
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My rounding is off - can anyone try this?
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Is Tension in a Tow Chain Equal to the Weight of the Car?
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*Need Help: Acceleration and gravity calculation - Thanks
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Struggling with an Assignment? Get Expert Help Now - Quick and Easy!
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How Do You Calculate Potential Energy on Each Step of Stairs?
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How Many Waves Does an MP100 Miss in 5 Seconds at 10 SPS?
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Calculating the Angle for a Collision of Two Particles
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Static Friction / Need Help Solving for Theta
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How Does the Position of the Man Change as He Walks to the Edge of the Boat?
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Compton Scattering of Electron
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Understanding Vectors: Evaluating Component Relationships
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Momentum and Collision Question
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Why Neutrinos Rarely Interact With Matter
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Solving Astronaut Problem: Force & Acceleration
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Is the Mass Determined by the Slope of an Acceleration vs Force Graph?
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Is Sliding Down a Falling Tree Safer Than Free Falling?
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Solving Projectile Motion: A Building 70.0 m High
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Rotational Motion of speed and a car
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Frictional forces, Maxiumum Velocity
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What is the x-component of force on the block due to rope 2?
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Velocity and acceleration on a track
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Velocity of airplane with crosswind.
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Special relativity clocks observed from two frames
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How Does Relative Motion Affect Light Travel Time in Special Relativity?
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Gravitational force, springs, and mass
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Two Ice Skaters Force On Each Other
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Velocity and acceleration on a running track
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Two stacked objects sliding down inclined plane.
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Question About Forces Using Unit Vectors
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How Does Physics Explain a Paratrooper's Survival After a 370-Meter Fall?
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Acceleration of mass on an incline plane
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Solving Unit Vectors Problem: Calculate Forces at B
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Crate pulled up incline, kinetic energy and speed; picture included
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Simple Gravity Problem: Finding an Object's Maximum Height
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Find current at high/low frequency
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Need clarification about x-t and v-t graph
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Finding Force on Rope: Trigonometry & Parameters
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Unit Vector Question. *updated*
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How Does Spring Compression Affect Block Motion on an Inclined Plane?
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Angle between Fz and S, picture included
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Calculating Work Done by Spring Constant k
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Why Can a Spaceship Drift Sideways in Space Without Any Forces Acting on It?
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What Are the Effects of Gravity on a 55.0 kg Ball?
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How Do You Calculate Tension in Two Strings Holding a Mass?
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When speed of sound is not negligible
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