Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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A box with two springs on a frictionless table
- BrainMan
- · Replies 7 ·
Calculating Tension in a Pulley System at an Angle
- mncyapntsi
- · Replies 4 ·
Calculating particle numbers in diffusive equilibrium of a battery
- baseballfan_ny
- · Replies 6 ·
Finding acceleration when a helicopter lifts a box with a rope
- Stell
- · Replies 5 ·
Manometer -- determine height from relative pressure
- daphnelee-mh
- · Replies 2 ·
Air Resistance Problem: Dropping two balls with different masses
- Richard8786
- · Replies 2 ·
Driven oscillator amplitude steady state X(t) = ##Asin(\omega t + \delta)##
- Redwaves
- · Replies 18 ·
Work done on moving a submerged object
- Murray Inglis
- · Replies 3 ·
Displacement problem with unit vectors
- Ursa
- · Replies 4 ·
Feynman's calculation of velocity from discrete data points
- rudransh verma
- · Replies 13 ·
Calculation of the rise in the temperature of a truck brake
- KedarMhaswade
- · Replies 3 ·
Why Does the Potential Energy Calculation for a Dipole Yield a Negative Value?
- guyvsdcsniper
- · Replies 8 ·
Potential Energy of three charged particles
- feynman_fan
- · Replies 11 ·
Uneven charge distribution on a conductor
- vcsharp2003
- · Replies 17 ·
I finding resultants using sine/cosine law
- EddyBenzen122
- · Replies 9 ·
Is my solution for this equilibrium problem correct?
- Tapias5000
- · Replies 4 ·
Force exerted by rod on a mass moving in vertical circle
- songoku
- · Replies 38 ·
Latitude change when traveling one nautical mile along a meridian
- Magnetons
- · Replies 7 ·
How Do Different Equations Affect the Initial Direction of a Traveling Wave?
- songoku
- · Replies 27 ·
Electric field at the center of a quarter-circle arc of charge
- guyvsdcsniper
- · Replies 1 ·
Amusement Park Centripetal Force Question.
- HangingOnByAPulley
- · Replies 11 ·
Thin Charged Isolated Rod -- Find the electric field at this point
- Ugnius
- · Replies 3 ·
What factors determine wattage of electrons flowing through a wire?
- LouisL
- · Replies 8 ·
Confused while reading HRK regarding rotational kinematics
- Afo
- · Replies 8 ·
Show the identity ##\vec{\nabla}(\vec{r} \cdot \vec{u})##
- Redwaves
- · Replies 12 ·
Confusing definition of electrical potential energy
- vcsharp2003
- · Replies 17 ·
What Are Some Possible Topics for an IB Physics Extended Essay?
- Newton04
- · Replies 1 ·
How can I solve these two physics problems? (equilibrium and moment)
- Tapias5000
- · Replies 9 ·
Question on special relativity from "Basic Relativity"
- PhysicsTruth
- · Replies 67 ·
Power calculations for a motor spinning a turntable
- mapika123
- · Replies 3 ·
Height of pendulum after hitting a peg
- songoku
- · Replies 23 ·
Determine the velocity of two balls after the first collides with a lever
- leafy
- · Replies 23 ·
Motion - How do you find the time in the air of an object
- mncyapntsi
- · Replies 20 ·
Finding final volume in isothermal and adiabatic processes
- es4
- · Replies 8 ·
Uniform acceleration in special relativity as function of proper time
- LCSphysicist
- · Replies 3 ·
Special Relativity Problem -- Speeding through a red light to make it look green
- iaberrant
- · Replies 28 ·
Electric Flux for a cube problem
- vcsharp2003
- · Replies 8 ·
Force diagram of two rods hinged together
- songoku
- · Replies 4 ·
Finding Radial Force from Free Body Diagram
- Slipjoints
- · Replies 4 ·
Car passing two markers, kinematics question
- orangegalaxies
- · Replies 7 ·
How do I Format Shapes in MS Word?
- AllThingsGo
- · Replies 28 ·
Artillery shells colliding in midair at 49° and 20° angles
- sc8
- · Replies 1 ·
What is the speed of the bicycle?
- brochesspro
- · Replies 57 ·
Solving Uncertainty in Data Analysis with Spectrophotometry
- LCSphysicist
- · Replies 3 ·
How Do We Calculate Surface Charge Density on a Non-Conducting Shell?
- rudransh verma
- · Replies 44 ·
2 contradicting approaches for a 1D elastic collision
- baseballfan_ny
- · Replies 5 ·
In combing hair, how do I know which one is getting what charge?
- Benjamin_harsh
- · Replies 1 ·
Is Your Charge Density Integration Correct for a Spherical Volume?
- rudransh verma
- · Replies 35 ·
Identifying a biological sample with Si-O composition from SEM-EDX
- Yel744
- · Replies 6 ·
Misunderstanding of Gravitational Potential Energy
- Rsch613
- · Replies 7 ·
Finding the maximum compression of the spring
- Sean Harold
- · Replies 4 ·
Finding The magnitude of the velocity
- lesdayy
- · Replies 43 ·
How Does Nick's Acceleration Change When His Friend Pulls the Rope?
- brandonp620
- · Replies 6 ·
Displacement nodes for overtones
- vel
- · Replies 12 ·
Volume density vs Surface density of charge distribution
- vcsharp2003
- · Replies 14 ·
Decomposing acceleration into tangential and normal components
- Shreya
- · Replies 9 ·
Magnitude of the flux through a rectangle
- guyvsdcsniper
- · Replies 3 ·
Help with Mathematical Description & Calculations of Space Charge Density
- Buzzer33
- · Replies 5 ·
Calculate quality factor of a damped oscillation from a graph
- Redwaves
- · Replies 7 ·
How to solve for EMF and internal resistance in a circuit?
- np115
- · Replies 8 ·
I am having some difficulties solving a combination circuits problem
- EddyBenzen122
- · Replies 13 ·
Is My Solution for Part D Logically Correct?
- EnricoHendro
- · Replies 7 ·
Linear size of everything in the Universe has been doubled overnight
- Monsterboy
- · Replies 3 ·
Is the Force Diagram for a Trolley with Zero Acceleration Accurate?
- pkc111
- · Replies 27 ·
How do you identify the systems in which Newton's Third Law is obeyed?
- pkc111
- · Replies 6 ·
Uncertainty, volume, and measurement
- mncyapntsi
- · Replies 4 ·
In hot pursuit, Agent Logan of the FBI
- hitemup
- · Replies 3 ·
Dipole placed in a uniform electric field
- vcsharp2003
- · Replies 11 ·
Time measured by two clocks (involves time dilation)
- songoku
- · Replies 11 ·
Is Negative Acceleration Always Indicative of Slowing Down?
- mncyapntsi
- · Replies 7 ·
Intro Physics homework help - distance and velocity
- mncyapntsi
- · Replies 4 ·
Conservation of energy for a series of elastic collisions
- Andrew1235
- · Replies 2 ·
Special Relativity and lightning
- friendbobbiny
- · Replies 18 ·
Subtracting two vectors -- I'm not getting the right answer
- Aleksa
- · Replies 2 ·
Confusion in choosing an origin point for angular momentum
- Rikudo
- · Replies 54 ·
Transition between excited states
- gildomar
- · Replies 8 ·
Calculate the individual voltage, current and power in series and para
- nickbb12
- · Replies 1 ·
Can Derivative Methods Determine the Correct Angle in Physics Problems?
- Tapias5000
- · Replies 3 ·
EMF due to Lorentz electric and magnetic forces
- songoku
- · Replies 3 ·
Exponential potential energy state diagram
- ThEmptyTree
- · Replies 13 ·
What's the source of increase in rotational energy of carousel?
- Karagoz
- · Replies 9 ·
Static structure - find a fourth relation
- Moara
- · Replies 11 ·
A transverse wave traveling through a medium versus a particle of the medium
- User1265
- · Replies 4 ·
Calculating Rocket Velocity to Sun
- arpon
- · Replies 6 ·
Distance and acceleration from a v(t) graph
- gladidi
- · Replies 34 ·
Equivalent system (force+couple moment) of a loaded beam
- greg_rack
- · Replies 9 ·
Special Relativity Time Dilation/Length Contraction Problem
- Yosty22
- · Replies 7 ·
Uncertainty in the intersection of two lines with error bars
- SuchBants
- · Replies 16 ·
Charge Density on a Conductive Slab
- MengMei
- · Replies 1 ·
Magnetic energy density, and pressure due to magnetic force
- Steve Spence
- · Replies 23 ·
Energy loss of damped oscillator
- vel
- · Replies 36 ·
Conserving Momentum in Emptying a Freight Car
- ThEmptyTree
- · Replies 54 ·
A slanted cylinder full of liquid about to fall
- lorenz0
- · Replies 12 ·
Adding vectors in this 3-D problem
- huehuephy
- · Replies 2 ·
Finding the velocity of a car in a different frame of reference
- Redwaves
- · Replies 3 ·
Newton's First law of motion -- Boy jumping vertically on a moving train
- Mikasun1108
- · Replies 4 ·
How Do You Calculate the Radius of a Wire Using Electrical Resistance Formulas?
- elenour
- · Replies 5 ·
What is the net force's direction of an object at its highest point?
- Mikasun1108
- · Replies 2 ·
Why must the sum of baryon and tau masses exceed the A mass?
- user1139
- · Replies 15 ·
Boat towed by two ropes at angles - force balance
- Tapias5000
- · Replies 11 ·