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 Many Air Molecules Did Sir Isaac Newton Breathe in His Lifetime?
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Calculating diamter of wire that will blow if current exceeds 1A
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How do I find velocity from acceleration?
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How Do You Calculate the Diameter of Plates in a Parallel Plate Capacitor?
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How Do Two Boxes with Different Friction Slide Down the Same Ramp Together?
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Diffraction of a circular aperture
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Power dissipation in resistive circuit
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Calculating Buoyancy Force for Iron Cube Submerged in Water | Homework Solution
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Find Force to Submerge Ball: 900 kg/m^3, 0.03 m^3
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When Will Two Objects With Different Speeds and Accelerations Meet?
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What is the potential difference between points a and b?
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Brake System (Torque and Friction)
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How Does Removing Bulb C Affect the Brightness of Bulbs A and B?
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Calculating Thermal Power Produced by Friction for a Sliding Rock
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Master Projectile Graphing: How to Plot Displacement vs. Theta
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Calculating percent error in a lab
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Area Moment of inertia of a circular wire
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Expressions for the group velocity
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Resistance between ball and bowl
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Why should I use conservation of energy?
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Internal Enery, heat and work/HELP
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Force to cover distance with drag calculation
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Square Plate Parallel, with angle, Capacitance Problem
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Can Electrons Leave a Circuit Through an Open Branch?
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Not sure what the initial temperature is
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Linear momentum and energy problem
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How Does Current Divide in a Circuit with Multiple Resistors and Batteries?
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Spinning ball bounces off ground, following curved trajectory
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Impulse and momentum of a golf ball
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Force Pushing a Block on a Rough Surface
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Heat Transfer and Temperature Equilibrium in a Mixed Substance System
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Phys book on level of Halliday in style of Spivak
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Three body, equal mass star system
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Conducting Spheres in Electrostatic Equilibrium
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Electric Potential Energy Question - Distance Between Charges and Ratio?
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Atwood Machine: Reduce Exp Errors By Stabilizing Masses
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How to solve for power in a piano wire wave problem?
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How Can a Grasshopper Jump 1 Meter Starting from Rest?
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Electric Field due to Capacitor Plates
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Hydrogen gas bombarded by electrons
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How Do You Calculate Forces in a Pin-Jointed Truss?
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Can a hypothesis be partially verified?
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Mean free path of electron in gas.
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What Causes Tension Changes in a Vertical Circle Motion?
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De Broglie wavelength of an electron
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What Range of Hanging Mass Keeps the Block Stationary on an Incline?
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Relativistic Stick: Can the Hole Contract Enough?
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Magnetic Field of rectangular current loop
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Projectile: Find range, given two displacement points
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Calculating Average Acting Force: Impulse and Interaction Time
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Solving Three Charges: Find Force on Q2
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How Does a Spider Affect the Angular Speed of a Turntable?
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What Is Jack's Initial Velocity When He Fell?
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Angular Motion - calculating rad.s and rev.min
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How can I calculate projectile distance with limited information?
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What Is the Current in a Nichrome Tube Connected to a 4V Battery?
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Conservation of Energy Post Lab Questions NEED HELP
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Galilean Invariance: Determining Invariant Quantities in Newtonian Mechanics
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Square loop of wire surrounding a solenoid
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What is the kinetic energy of the proton?
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Projectile Problem: Find Theta | d=30, v=22, g=9.8, y0=2
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How Is XOR Implemented Using Only NAND Gates?
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What is the minimum current required to drive a magnet plunger in a micro pump?
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Understanding Velocity in Standing Waves | Wave Motion Homework"
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What is the Surface Charge Density for a Spherical Cavity?
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Newtonian Mechanics: Falling Parachutist Problem
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Truck vs Tree (first week physics woes)
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What is the Coefficient of Friction for a Pulley System on an Incline?
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Projectile motion using conservation of energy problem
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Conservation of angular momentum / finding change in rotational kinetic energy
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How Do You Solve the Tension Problem in a Multi-Mass System?
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Calculating Linear Momentum Change of a Bouncing Cue Ball | Physics Problem"
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Static equilibrium, diving board
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Projectile motion of a rolling ball
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Find and calculate current in a circuit
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Effective Resistance of an Infinitely Long Ladder of Resistors
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Interference of Two Sound Waves: Phase Difference & Intensity
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Calculating Impulse on a Baseball Colliding with a Bat: Magnitude and Duration
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Charge on pendulum due to electric field
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Conservation of Energy and Momentum in Photon-Electron Interactions
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A few questions, conservation of energy
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How far does a putty block compress a spring after an inelastic collision?
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How Do Normal Forces Affect Various Systems in Physics Problems?
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How Do Archery, Helicopters, and Physics Intersect in Competitive Scenarios?
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So how do you solve for v2?Finding Velocity After Acceleration?
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General Application of Boyle's Law
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Finding final Velocity given mass, force, and displacement
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Young's Slit Interference (Double Slit)
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Simple average speed/average velocity problem
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Finding the speed of a trebuchet
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Determining the Level of Mercury in U shaped tube
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Need help coming up with dl in cylindrical coords.
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Calculating Vertical Height & Speed of Bullet Fired Upwards
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Calculating Work Done by a Beaver in Building a Dam
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Normal force - object sliding with velocity
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Hall Effect Experimental Results Issue
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Electric charge on hollow spherical conducting shells Gauss's Law(?)
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What is the pressure of nitrogen when cooled to -5oC?
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Minimum distance & electrostatic potential energy
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Positronium atom transition - energy of photon
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