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.
Simple Tension Problem: Free Body Diagram and Calculating Normal Force
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Which has a greater Gravitational Energy?
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Mass and pulley system question
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Elastic string with mass at its end
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Impedance as a function of angular frequency
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Total distance in simple harmonic motion
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Electron enters uniform magnetic field and takes circular path
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Bernoulli's equation, static fluid, gauge pressure problem.
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Saltwater Elevation below Ball: 1.85cm
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Rotational Inertia and Motion problems
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Magnetic Force on a Circuit: What is the Magnitude of Force on a Structure?
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Physics Pressure ranking pressures?
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Air Resistance of a Diver using Ek and Eg
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Nuclear decay of a mixture of P and S. (2009 USAPhO Question A2)
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Solving Ampere's Law Problem: Find Magnitude of B·dl
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Coefficient of static friction of a sliding block
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Uniform rod resting against rough vertical wall supported by a string.
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Finding the spring constant of a mass in SHM
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Frequency of Circular Motion in Ring Rolling Inside a Cone
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Calculating Energy Stored in a Parallel-Plate Capacitor
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Help with horizontal velocity
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SHM Oscillation problem involving potential energy
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Derivation of Noether's theorem in Lagrangian dynamics
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Entropy of a Fermi dirac ideal gas
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The effect of a stationary proton on a stationary electron
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Centripetal and centrifugal forces
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Arithmetic Question Involving Quantum Physics
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Atom Absorbing and Emitting Photons
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Latent Heat Question: Calculate Vaporization Rate & Energy Needed
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Calculating Power Needed for Water Evaporation | Heat of Vaporization 2260 kJ/kg
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Function Waves Graph Homework: Find λ for tp=3.5s and xp=3.7m
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Solving Tension of a Wire Problem
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Question on finding moment of inertia about the center of mass
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Get the minimum taken to move from A to B given a cap on Velocity
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What Is the Net Inward Force on a Sinking Barrel?
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Two point charges connected by a massless rope
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Need help on length change due to temperature change question
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Two dimensional projectile motion
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Electric field in all regions of infinite cylinder
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LR Circuit Analysis: Find Current i When Switch is Opened
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How Do You Calculate Net Inward Force on a Submerged Barrel?
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Calculating Capacitance in an RC Circuit: A Mentor's Guide
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Understanding Prism Deviation Angle in Optics
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Momentum Problem involving minimizing collision impact
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How Fast Must Earth Spin for Equatorial Weight to Be One Fifth of Polar Weight?
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Centripetal acceleration speeding car problem
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Why Ignore the Magnetic Field in a Mass Spectrometer?
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Electric Field of x-axis line of charge at the origin.
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Plane Mirror Optics: Determining Minimum Mirror Size for Viewing Entire Image
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Unicycle straight line motion/time dependent acceleration Problem
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How Do You Solve the Freefall Catching Problem in Physics?
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Work Done by Water: Calculating/Solving Homework
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A Question about Torque Used for Static Equilibrium
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Lagrangian of a rotating disc with mass attached
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Inserting iron core in an inductor coil
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Measuring parallel velocity in rotating frame.
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Finding Velocity in Car Collision Impulse Problem
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Find Time Constant for RC Circuit: Solve the Equation!
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Calculate Pressure of Sand on Paper: D=19.6 Pa
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Work & Equilibrium of Insulated Box: Why W=0?
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Mass hanging by spring tracing a eight shaped curve
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Negative work, positive work problems
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How Does Compressing an Ideal Gas Affect Its Temperature?
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Can You Master Drawing Ray Diagrams for Prisms Using Snell's Law?
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Deriving wave equation with single string and small amplitude wave.
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Block and Bullet Collision: Finding the Height of Block B | Homework Problem
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Gauss's law on a charged sheet.
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Magnetic field and Induced Electric field inside a solenoid
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Quantum Mechanics , bra-ket , angular momentum eigenkets, eigenvalues
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How Does Spring Mass Affect Its Behavior?
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Is electric field decomposable when detected by CCD?
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Solving for Visible Light Reflection/Transmission: A Homework Help Guide
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Question about phase transitions and PV, VT diagrams
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Thermal, steady-flow, table, continuity
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Boundary conditions don't apply in the equation's region of validity
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Gravitational fields - move from A to infinity
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KE Loss Qs 8: Elastic Collisions Explained
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Resonance-The frequency of an applied force
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Mechanical energy and momentum conservation
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What is the range of angles for total internal reflection in glass?
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Can Circuit Components Carry Uniform Current in These Diagrams?
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What is the temperature of the freezer based on the Ideal Gas Law?
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River crossing and relative velocities
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Determine its speed immediately before landing
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Calculating Rotational Work on a Solid Cylinder
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What Are the Alternatives to Silicon in Chip Manufacturing?
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How Do I Solve for L in an Inductance Equation?
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Relativistic addition of velocities problem
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How to Solve an Elastic Collision of 3 Balls with Frictionless Motion?
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What is the concept behind Diffraction, n , Finding Dark/Bright Spots
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Thin lens equation and image formation
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Tension? knowing friction. I have the answer but need explaination
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Period of falling through asteroid vs orbit
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Thermodynamics: Air and Steam Mixtures
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Two stacked blocks attached to a spring
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Displacement of a wave: Understanding Negative Results
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Infinite Line of Charge and Electric Potential Difference
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An object which experiences two gravitational force
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Acceleration of the tips of wind turbine blades
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What Factors Increase the Acceleration on a Spinning Wheel?
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