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.
Magnetic field force between two perpendicular wires
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Net Torque Within a Mass and Pulley System
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Why does the logic of negative acceleration not always indicate negative work?
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Violation of 2nd Law of Thermodynamics
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Is the Change in Internal Energy Just 4513 J When No Work Is Done?
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What are the forces on a cell in a tree vs on the surface of a tree
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Surface Tension and Pressure Balance in a Spherical Water Drop
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Raman Spectroscopy: Understanding Stokes and Anti-Stokes Lines
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Extended Essay Help: Get Expert Writing Assistance
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Mechanical Physics: Coefficient of Friction
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Newton's Third Law: Action and Reaction Explained
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Determining Radius from Magnetic Field of a Single-Wire Loop
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Concave mirror reflecting a point lamp, that create a wider beam
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Newton's First Law to explain Washing Machine Spin Cycle
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The final velocity of a ball rolling while slipping.
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Three Phase Per Unit System - Mark up, represent as single phase equiv
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Solving the Basic Mechanics Bullet Block Collision Problem
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Finding how much heat released by evaporation of water
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Understanding the energy of a dipole in a uniform electric field
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How Do You Calculate m3 and m4 in Nuclear Reaction Equations?
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Is Centrifugal Force the Key to Understanding Rolling Coin Dynamics?
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Rise of Liquid from Horizontal Acceleration
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Ratio of atomic masses of two ideal gases
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Proving Entropy statement is equivalent to Clausius statement
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Find the work from Newton's law of gravitation
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Quantum Theory, particle in a ring
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How many kilocalories per gram are there in a 5.00-g peanut?
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Finding the apparent acceleration due to gravity versus latitude
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Kinetic energy transfer from a rotating body in an inelastic collision
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Heat exchanged in Expanding and cooling gas
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Significant figures -- wrong answer to Thermodynamics question?
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Finding heat exchanged work done to compress gas
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Special Relativity - Which reference frame experiences which time?
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Time Travel: Calculating Velocity for 10 Year Trip
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Three equal forces applied to a rectangle, find net torque direction?
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Understanding Work-Energy Theorem: Solving an Exercise with Different Solutions
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Calculating moment of inertia for nonuniform sphere
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Keeping a uniform bar in horizontal equilibrium
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Conservation of relativistic energy, collision of particles
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The Entropy Change of Melting Ice: Why is the Equation Written as ΔS = Q/T?
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Understanding Isothermal Work: Solving the Gas Compression Problem
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Calculating Spacetime Intervals for Simultaneous Events
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Electric fields between point charges
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Confused about significant figures in official solutions
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Poiseuille equation for water flow rate
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Uncertainties propagation for area of a rectangle
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Calculate these 5 temperatures along this Thermodynamic cycle
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Kinematics : Average velocity problem
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Where in orbit should a rocket fire to escape with minimum ΔV
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Simple Harmonic Motion question (Need clarification)
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Long distance electrical transmission efficiency
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Method of Images from an earthed half cylinder and plane
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Einstein's Electrodynamics of moving Bodies
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How does the presence of a cube resistor affect current flow in a circuit?
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Effect of a polarizer/analyzer on partially polarized light
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Final velocity involving a can of soup and an inclined plane
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Forces in a Line: Examining the Relationship Between Mass and Force
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Work done to lift a mass of water
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Rearrange formula and work out phase angle
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MIT OCW, 8.02 Electromagnetism: Potential for an Electric Dipole
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Surface density of the charges induced on the bases of the cylinder
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Moment of inertia problem involving a cylinder rolling down an incline
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1D Particle & Energy w/ F(x): Am I doing this right?
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2-D Momentum Problem -- Elastic collision of two spheres
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Mastering Jenga Tower Physics: Calculating Forces and Layers
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Thin heartshaped wire - Calculate the magnetic field at the origin
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Electric field generated by solenoid
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The gravitating of a small mass towards a big mass
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Finding downward force on immersed object
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Superposition of two one-dimensional harmonic waves
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Damped harmonic oscillation of a swingboat
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Doppler effect and acceleration of source
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Moments of force on Jenga tower
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How to calculate Earth speed of the Moon induced orbit?
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Glass prism and its refractive index
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Change in energy stored in a spherical Capacitor
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Electric field at the center of the equilateral triangle
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Solving Distance Traveled Using Formulas vs. Graphs
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Optimizing Polar Axis for Dipole in Polar Coordinates
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Initial speed of an object launched from Mars
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Can an ideal spring ever experience an unbound state?
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Solving Current & Power in 4 & 3 Wire Circuits
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Creating a Contour System: Results
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Find Initial Velocity of a projectile given flight time and angle
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Another way to find trig identities
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Helium balloon energy conservation
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Measuring wavelength of microwave radiation using double slits
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Change in temperature of air in a closed system
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Solar System Forces -- Simulating the planetary orbits for my project
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Symmetrical parallel inductors, different currents? State Preparation
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Single transfer lag in an open-loop system
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A particle in an infinite square well
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Speed of sound from resonant length of tube vs tuning fork wavelengths
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Use linear regression to find Planck’s constant
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Wrong B-Field Result: What Should I Have Done?
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Which hemisphere is the observer?
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Understanding the Adjoint of |01> in Quantum Computing
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How to approach dynamics problems?
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Gas temperature in a constant volume
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Force between point charges at the center of two spherical shells
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