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.
Predicting path/direction of a charge in a magnetic field (drawings included
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Calculating the Length of a Floating Soda Can
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Diving Depth for 1/20 Atmospheric Pressure Differential
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Charge of q Problem: Find q from Two 3.0g Spheres on 1.0m Threads
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Reinforced Concrete Help: Where To Place Steel Bars?
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How Much Energy Was Released in the Fuel Tank Explosion?
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How Does Wind Speed Affect Roof Pressure in a Storm?
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Acceleration of gravity , from a pendulum
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Sound Intensity pig calling contest
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Magnetic Field Inside Wire Quick Q - (I've asked 3 times and no answers)
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Simple Harmonic Motion of a wave
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L_{min}=56.7mAnswer: 340.7mSolve 2 Momentum Questions: Quick Answers!
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Maximum Force Analysis for FB and FC Limits in a Tension System
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What is the range of response time when communicating with a friend from Mars?
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Standing Sound Waves: Wavelengths in 121 cm Tube - SOLVED
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Gravitational field and spaceship
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Calculating Trampoline Stretch: Spring Constant of 52000 N/m Explained
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Solve Rolling Ball Problem: Find Speed & Normal Force
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RC Circuit Potential and Current Calculation at Time=0 and Infinity
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Calculating Tension Force: Cable Cars in San Francisco
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Waves on a String linear density?
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Understanding Newton's 3rd Law: Reactionary Forces to Friction
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How Does a Spring Balance Measure Force in Different Elevator Scenarios?
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Superposition, amplitudes and superposed waves.
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Conservation of Energy Challenge Problem
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Solve Electrical Power Homework: 5.3kW
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Am I doing this problem correctly?
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Finding the coefficient of friction, ramps and acceleration
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Get a negative dot product is to have an angle larger than 90 degrees.
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Determine the medicine's flow speed through the needle
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Threshold of Hearing for Sound Waves in Outdoor Concerts
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How fast is this jet (UFO?) traveling in this video?
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Calculating New Rotation Period of a Star After Shrinking Diameter
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Finding mass with given stress, strain, and original area
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Calculate Rotation Period for Amusement Park Ride
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What Are the Speeds of the Fragments After an Explosion?
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Energy density of electric field
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What is the relationship between height and velocity for a falling object?
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Find the magnitude of the acceleration of the particle.
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Eardrums "Pop" Outward on a Train - Bernoulli's Equation
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Conservation of Energy Problem - Need Help
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Solving a Model Trebuchet Problem - Physics Coursework
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Copper wire magnetic force help
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Calculating Angular Momentum: Particle+Meter Stick
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Center of Gravity for nonuniform plank
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Electromagnetism, force between dipole and grounded plane
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Apollo 1 command Module Pressure/Force
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How to Calculate Maximum Induced EMF in a Rotating Coil Gaussmeter
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How to solve for the work done by a force on an object in the x direction?
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Can You Tune an Organ Pipe Without Altering Its Physical Construction?
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Can Gas Become Solid at Absolute Zero in a Bottle?
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Finding Electric Forces Between Identical Spheres
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Wrong Forum: Help with Guass' Law & RC
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What Is the Minimum Spring Constant Needed for George's Safe Bungee Jump?
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What is the energy requirement for traveling from Earth to the Moon?
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How Do Temperature Changes Affect Ultrasonic Distance Measurements?
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What was the speed of the projectile when it left the cannon?
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Calculate the change in potential energy
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Universal Gravitation and spheres
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Rotational/Tangential Motion Problem
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Solving Motorist's 7min Trip Vectors & Speeds
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Sphere rotation expression help
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Car Crash Collision - Calculating Velocity
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Need help with assignment force question
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Changes in Resistance due to Temperature
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Friction, object at rest then accelerates.
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Calculating the Net Force of Bruce Nuclear Development
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How Do You Calculate Accelerations and Distance in Gyroscope Dynamics?
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Solving a 2.1x10^3 kg Car Motion Problem
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Find Force Exerted on Blocks Sliding Down a Rough Incline
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How to Derive the Differential Equation for Forced, Damped Oscillations
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Solved: Force Problem x-axis [SOLVED] Force Problem
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Mistake in solving for work in physics?
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Finding the slop of a string (Waves)
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Coefficient of friction on an inclined plane
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Understanding Momentum in Collisions: Truck vs. Car Velocity Change
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Energy from 110m Dam: Cv=4.2kJ/kg/°C
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Estimate the velocity of each stone have just after the collision
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Need help with fluids and pressure problem
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L-C-R Circuit - finding current
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Quick vector question (involving coulomb's law)
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What is the electric field at the center (in N/C)?
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What is the Specific Entropy of Ice?
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What is the electric field at point P with given coordinates?
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Carnot engine working in reverse poblem-
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Radial visualization & spring forces
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Derive an expression for the tension in the cord
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Max Power of Resistor in 3-Resistor Circuit
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Max Initial Separation for Meeting of Two Moving Bodies
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Websites about velocity of sound for Report Intro.
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Max. Height Insect Can Crawl in a Bowl: u & r
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Bulb Energy Transfer: How Does Voltage Affect Filament Breakage?
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Ball on two strings, rotating around a rod
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Solve Water Flow in Pipes: Pressure on 2nd Floor
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Calculate the wavelength problem
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General question about wave equation
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Magnetic field and current of solid wire
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2 concept questions on magnetism.
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Analysing a Circular Highway Curve: Angle, Friction & Speed
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Find the Charge Needed for a 1.20V Voltage at 5.0m
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