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.
Putting a slab of some material just after the slits in Young's model
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Physics Project Ideas for this Competition please (self-propelled car)
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Determining the factors impacting the amount of Work done
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What Forces Act on a Block in a Rotating Cylinder?
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Energy Conservation of a Vertical Spring
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Why Does My Calculation of Maxwellian Gas Velocity Yield an Incorrect Result?
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Finding the angle between a wall and a broken rope
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Is 2D Conservation of Momentum Possible? A Visual Analysis
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Temperature change in a gas expansion
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Equation of motion of a simple pendulum
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Has this particle exceeded 30 km/h on a velocity vs. time graph?
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Instantaneous acceleration of blocks
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RMS velocity of molecules in a mixture
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Mechanics problem — One body thrown vertically and one thrown horizontally
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Thermodynamics: find the change of internal energy, the work and Q
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Change in the time period of a pendulum
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Understanding Work Calculations: Clarifying the Role of Forces and Intuition
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Asking for help with a physical problem that uses a piston to push water
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Unraveling the Mystery of Mass & Force: A 180 lb Person
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Determine tensor of inertia of a rod
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Classical Mechanics: Linear movement against a constant force
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Classical Mechanics "variable mass" linear motion problem in one dimention.
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Is My Solution for Centripetal Force in a Spiral Orbit Correct?
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Conservation of momentum when a ball hits a wall
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Conservation of momentum — Water dropped from a firefighting airplane
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How Is Impulse Calculated in Volleyball?
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Moving an adiabatic partition in an adiabatic container
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Young's modulus — Finding the change in the length of a metal bar under stress
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A spool that rotates and slides freely while pulling a mass
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How do I predict rogue waves using simple probability models ?
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Gauss-Theorem on a solid dielectric sphere
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Keep working on the liquid pressure problem
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Collisions in special relativity
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Finding u and v for a Moving Rocket: Applying the Lorentz Transformation
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Heat loss from a hot water tank
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Two different answers for work done during compression
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Energy & Spring: Rejuvenate Your Life
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How Does Gravity Influence Spring Potential Energy in Physics?
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Why Can't Forces Replace Energy Conservation for Spring Stretch?
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How Do You Calculate the Acceleration of a Box on Banked Wheels?
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What is Kepler's Second Law and How Does it Relate to a Planet's Time Period?
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Platinum resistance thermometer and Kirchoff's Laws
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Question on four momentum squared
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Perpendicular forces acting in x and y directions
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Heisenberg's Uncertainty Principle Question
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Find the electric field on the surface of a sphere using Coulomb's law
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Time taken for sound to travel between two moving observers
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How Does Tension Contribute to Climbing Power?
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Help with a grade 12 physics project — small recoil powered car
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Angular momentum of two particles connected by a rigid bar
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How do I start out this project? (rogue waves)
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How do physicists/mathematicians verbalize these symbols?
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[Mechanics] Calculate the braking torque
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What is usually the time-derivative of i-hat?
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Ball launching off of a tray connected to a spring
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Linear Thermal Expansion with respect to time
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Fluid mechanics — Question about this vector diagram
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Instantaneous moment of inertia of an object
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Surface Charges on a Coaxial Cable
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Why Does Pulling a Cord Cause a Spool to Move Right?
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Converting Between Temperature Scales: Finding the Relationship Between M and F
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Checking My Work: Did I Answer Part e) Correctly?
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Accounting for Liquid Water Density in Ideal Gas Pressure Calculations
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Confusing Derivation of torque acting on disk question
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Understanding Axial Loading On a Member
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A harmonic wave with a frequency and an amplitude
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How Do I Calculate Heat Transfer by Conduction Using Thermal Conductivity?
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Doubts about the method of determining the elastic constant of a spring
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Density of air at one atmosphere pressure
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Rotational motion: Number of revolutions before a flywheel comes to rest
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Electric field inside a polarized dielectric sphere
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How Long Does it Take for a Motorcycle to Overtake a Car?
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Estimating oil molecule diameter
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A block of mass m is dropped onto the top of a vertical spring....
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What is the significance of In in the context of Thevenin equivalents?
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Mass of Gas Ejected: 1.25kg - Is it Reasonable?
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How Do You Find Extragalactic Cepheid Variable Databases?
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Constant of thermal conductivity and heat flow in a given time
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Bernoulli equation in a closed loop system
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Rotating Flywheel: Tips & Tricks for Beginners
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Calculate the margin of error in this physics lab
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Is the Loss of Kinetic Energy Related to the Volume of a Copper Atom?
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The Mystery of Purple Objects: Understanding Electromagnetic Force
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What is Pressure Energy & How to Calculate it?
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Understanding the concept of Energy
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Does Polarity and Current Direction Affect Energy Flow in AC Circuits?
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Rotational motion and finding the moment of inertia
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Metal bar moving in a magnetic field
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AP Physics 1 Help? Centripetal motion/Kinematics/Friction problem
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Unlocking Binding Energy Solutions for Part C)ii - Tips and Strategies
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Sig Figs: 10.00cm, 16.38cm, 29.10cm to 2 Decimal Places
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What are the key steps to solving this beginner circuit problem?
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A particle of unit mass moves under the action of force F=-k²/x³ ....
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The electric field of a piecewise uniform 1D charge distribution
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Help with a problem about motion — bullet striking a block of wood
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Internal energy of a container filled with water & steam
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Does the speed of sound depend on the speed of the medium?
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How to find the velocity needed to melt a snowball
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Rotational dynamics: Rotating rod with two attached balls about a non principal axis
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Find the point of separation in SHM
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