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 Far Should the Runner Sprint to Finish a 10km Race in Under 40 Minutes?
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Relativity - Lorentz Transformation
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How Is Entropy Calculated in an Isothermal Expansion of CH4 in a Carnot Engine?
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Calculate Acceleration, Velocity and Force of a Piston
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Calculating Work Done by Force of Gravity on a 0.245 kg Ball
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Find the current and potential difference
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What is the maximum power and corresponding current for a car battery?
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Maximum Charge on Parallel-Plate Capacitor with Mica Dielectric
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Is the Force Conservative in a One-Dimensional System?
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Methods for Determining the Volume of Copper Wire: A Comprehensive Guide
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Does Current Depend on Wire Diameter?
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Magnetic field produced by coil and solenoid
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Double Laser Interference: Solving for Small Angles
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Dielectric Breakdown-max potential difference
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How to Calculate Minimum Thickness for No Reflection in a Thin Film?
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Special Relativity and muon decay
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Which Charge is Negative in an Electric Field Diagram?
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What is the Kinematics of a Particle Leaving a Ledge?
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How do I solve this Thick Film, Double Slit problem?
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AC emf applied to capacitor and lamp in series
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Calculating Heat and Work in Thermodynamics of Gas at 100°C and 1.01 x 10^5 pa
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What Went Wrong in Calculating the Velocity of Carts C and B After Collision?
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Problem solving for time when average power and total energy is given
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Acceleration and velocity (conceptual) question
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Can Displacement Be Calculated Without Drawing a Scale Diagram?
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Deriving Formulas for Work/Energy Problems
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Tension in a vibrating string at a given frequency
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Understanding Snell's Law: Common Mistakes and Troubleshooting Tips
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How Does the Smaller Block's Slide Affect the Larger Block's Acceleration?
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Calculating Net Work, Heat Transfers in a Thermodynamic Cycle
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Lorentz Transformation - Proof that t'2 - t'1 >0
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Help with box on sled slope problem
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A car placed on incline and a mass placed on the car
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How to solve rotational work and energy problem?
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Calculating Work Done by a Batter on a Baseball
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Calculating SAR from multiple sources
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How Do You Calculate Tension and Angular Acceleration in a Pulley System?
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Help to explain electromagnetism, a loop of wire in a magnetic field.
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Understanding about differentials?
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What Is the Radius of Curvature for a Horizontally Thrown Stone After 3 Seconds?
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Surface Tension: Bubble Volume & Container Wall Contact
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Volume of object that weighs 200N more in air than in water
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How to Determine Relative Velocity Using Vector Subtraction
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How Does Water Angle in a Rotating Carousel Microwave?
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Solve Elastic Collision Homework: Neutron Mass m0
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Rotational Motion of a slender rod
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Calculating Collision: How Long Until Two Continents Collide?
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Does This Engine Violate the First or Second Law of Thermodynamics?
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What is the linear velocity of a point on a swinging rod before it hits a wall?
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Prove 4f is the Min. Distance Between Conjugate Points for Thin Lens
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Simple beginning physics, mindfart
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Uniform Circular Motion and Water Falling From A Bucket
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Seafloor Spreading Homework: 100M Yrs, 2K km Length, 1 cm/yr
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Determining the mass of the black hole at the centre of the Milky Way
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Time dependent Resistance in an RC-circuit
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Calculating Penguin Mass m2 with Forces and Frictionless Ice - Homework Help"
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Rotational Inertia of compass needle
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Why can this formula be applied for diffraction gratings?
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Solve Equilibrium Problem - Find Tension in T3 & T4
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Calculate Speed of Water Ejected from Hose
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Ball on String Elastic Collision
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Tangential and Radial Acceleration of car around a curve
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What Is the Average Volume Gained Each Day for a Newborn?
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Absolute Temperature and the Ideal Gas Law
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Kinetic Theory of the Ideal Gas
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Momentum in Space - How long will it take?
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Optimal Expansion Gap for Concrete Highway in Varying Temperatures
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Force and acceleration given position equations. Find magnitude and angles
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Calculating Frequency of Vertical Oscillation for a Spring-Mass System
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Justify the number of significant figures for x
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Electric Potential Homework: Find VA & VB
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Biomechanics I, somersault question using angular accel/ vel
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Calc Density Unknown Liquid: Buoyancy & Tension | Fluid Physics
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Solve Frictionless Drift Physics Problem: Angle of Inclination
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Calculating Height and Velocity: Solving the Throw-up Problem
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Extension in Spring Homework: Find x
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How much water to melt ice at 0 degC with water at 5 degC ?
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Shining a laser pointer towards the star vega
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Tension in two cables with a mass
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Mirrors & Lenses: Understanding Virtual and Real Images
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How Do You Calculate Pressure Drop in a Garden Hose?
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Work energy question. Rock down a hill.
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Resultant Acceleration of an Object Under Perpendicular Forces
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Applying Newton's Third Law of Mortion
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Why is the tension different in two systems with the same downward force?
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Calculating Force Needed to Pull Sled with 210kg Load
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Ballistic free-fall - rock slide
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Simple Harmonic Motion- Phase Shift Help
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Finding F on a box on an inclined plane
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Understanding d^3 vec{r} and its Role in Integrals | Helpful Explanation
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Momentum & Pulleys Homework: Solving for Velocity
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Hohmann Transfer, energy for both boosts
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Orbit changes, Kepler's Third Law
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Why Does SQRT(3) Factor into the Coulomb Force in an Equilateral Triangle?
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Electromagnets and Conductors: The Effects on a Pendulum
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Hypothesis on voltage homework
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Particle Motion in One Dimension
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Hi, Momentum (Classical Physics) Help
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Baseball Kinematics: Calculating Acceleration from Stopping Distance
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Calculating Tension for Rope Crossings with Angles & Weight
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