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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[QM] Addition of spin for normal and identical particles
- Coffee_
- · Replies 5 ·
1D Collision / Charges / Coulomb's Law
- julianwitkowski
- · Replies 13 ·
Probability density for related variables
- diegzumillo
- · Replies 2 ·
Two cylinders in contact come to final angular velocities
- Taylor Grubbs
- · Replies 2 ·
What is the velocity of the air flowing though the pipe?
- Siebo
- · Replies 12 ·
Finding distance -- Find the height of an object given ratio of two distances
- D.Man Hazarika
- · Replies 2 ·
What are the dimensions of A and B in the equation x = At2{1-exp(-t2/B)}?
- snovak216
- · Replies 9 ·
Rutherford's atom experiment problem
- Dana Fishel
- · Replies 4 ·
QM, the convergence of the harmonic oscillator function.
- Coffee_
- · Replies 2 ·
Free Fall - Calculating Origin/Release
- Tearsandrille
- · Replies 10 ·
How to find angle Electric field makes to x-axis?
- Dana Fishel
- · Replies 7 ·
Transvese Velocity of a Standing Wave
- Bassa
- · Replies 1 ·
Integration of an acceleration formula involving vectors
- EnlightenedOne
- · Replies 26 ·
Graphing Current v. Time for simple 2R1C circuit
- friendbobbiny
- · Replies 5 ·
Finding binding energy and converting into MeV
- Curious&TheNon
- · Replies 5 ·
Calculating Coefficient of Static Friction to Keep Glider from Springing Back Left
- henry3369
- · Replies 16 ·
Do projectile motion equations change with initial position?
- TimeInquirer
- · Replies 6 ·
Temperature need to melt this ice in 400 years
- Aleksa S.
- · Replies 4 ·
How Do You Calculate Dragster Deceleration Time and Distance?
- Casey Wilson
- · Replies 3 ·
Quantum mechanics relation between p, λ, E, f in a wave
- Samuelriesterer
- · Replies 3 ·
Reaction and friction coefficient on a cylinder
- Karol
- · Replies 1 ·
How Does Lens Focal Length Affect Microscope Magnification and Field Diameter?
- Grufey
- · Replies 1 ·
Spring Constants: Does Changing Diameter Affect Constant?
- simplyphysics
- · Replies 3 ·
Projectile problem -- How much to increase Vi to reach a farther target?
- D.Man Hazarika
- · Replies 4 ·
Why does the flux integral stay constant when the surface changes around the same charge?
- ZARATHUSTRA
- · Replies 7 ·
How Does Atmospheric Pressure Affect Water Stream Shrinkage?
- dmk90
- · Replies 3 ·
Calculating Coefficient of Static Friction on an Incline
- brake4country
- · Replies 5 ·
Finding boat age from carbon-14 activity decay
- Tangeton
- · Replies 1 ·
Determining speed of orbiting object
- brake4country
- · Replies 8 ·
Tension in spot welds between four spheres stacked in a pyramid
- arpon
- · Replies 4 ·
Error Propagation: Dividing By 20 in Pendulum Timing
- PhysicStud01
- · Replies 1 ·
Maximum load and extension for mild steel specimen with factor of safety 2.5
- Mido999
- · Replies 19 ·
Reaction force on a leaned beam
- Karol
- · Replies 2 ·
Finding Equilibrium in a Three-Pulley System
- crewss2015
- · Replies 4 ·
Conservation Laws in Rotational Motion
- Draggu
- · Replies 9 ·
Why doesn't the work done against the electric force change the particle's energy?
- friendbobbiny
- · Replies 5 ·
Why is k/m denoted as omega squared in simple harmonic motion?
- ThatDude
- · Replies 1 ·
Series Combo Of Capacitors, Smaller Than Single Capacitor
- BOAS
- · Replies 15 ·
Finding theta for Coloumb's law suspension
- Zoidberg3001
- · Replies 8 ·
Motor Effect: Lorentz Force vs Electromagnets
- Jimmy87
- · Replies 1 ·
Gravitation - Position of Stable Equilibrium
- little neutrino
- · Replies 21 ·
Effect of a diverging lense on a nearsighted patient
- Chris_Physics
- · Replies 1 ·
What is the resultant electric field?
- shanepitts
- · Replies 5 ·
Normal and tangential forces on a cylinder
- Karol
- · Replies 6 ·
What is the wavelength of radio waves at 1250 kHz?
- rrosa522
- · Replies 2 ·
Calculate the work in Joules by the Acetylene gas
- ThymeSeer
- · Replies 4 ·
Calculating magnetic force on circular coil carrying current
- cseil
- · Replies 5 ·
Photon energy and calculating frequency
- MathiasArendru
- · Replies 2 ·
Why does h(z) converge in Griffiths' harmonic oscillator solution?
- Coffee_
- · Replies 11 ·
Particle collision and deflection angle
- geoffrey159
- · Replies 10 ·
Pulley Problem (with force upward)
- terryds
- · Replies 12 ·
Freefall to rolling with no slip
- qwanzaden
- · Replies 9 ·
Dropping a package with initial velocity
- Calpalned
- · Replies 2 ·
Projectile motion of a flying object
- rrosa522
- · Replies 6 ·
Gravitational field owing to a uniform circular plate
- Dumbledore211
- · Replies 1 ·
Efficiency of a combustion motor
- Karol
- · Replies 5 ·
Steam plant output calculation for evening class assignment
- anthonyk2013
- · Replies 8 ·
Gravitational force between 3 masses
- HaLAA
- · Replies 16 ·
Kinematics - projectile with acceleration that depends on V
- Feodalherren
- · Replies 3 ·
Static friction between a cylinder and a wall
- Karol
- · Replies 7 ·
Atomic clock: energy between two levels
- Jillds
- · Replies 1 ·
Comapring acceleration of person in elevator
- songoku
- · Replies 5 ·
Focal length to get clear image
- songoku
- · Replies 10 ·
Do I have the right amount of sig digs?
- EgpYo
- · Replies 4 ·
Time dilation for Alphonse's spaceship at 0.604c
- Curious&TheNon
- · Replies 12 ·
In which case car must do more work -- Kinematics
- students2
- · Replies 17 ·
Optical System with Diverging Lens and Concave Mirror
- whoareyou
- · Replies 7 ·
How can the log in the denominator of the charging equation be simplified?
- Dr. Ficus
- · Replies 1 ·
Acceleration of massless pulley and blocks
- Bruneleski
- · Replies 25 ·
Calculate Tension Between Car and Trailer
- Thomas Hochkins
- · Replies 10 ·
Instantaneous Displacement of a Sound Wave
- Mtscorpion12
- · Replies 2 ·
Finding reaction components and resultant reaction
- leonheart
- · Replies 8 ·
Circular Motion Problem: Finding Tension in a Vertical Circle [11.8 N]
- PhysicStud01
- · Replies 3 ·
How Does a Muon's Travel Illustrate Relativity Principles?
- EgpYo
- · Replies 2 ·
Calculating moving speaker through two detectors
- Samuelriesterer
- · Replies 4 ·
Collision of a particle with a thin rod
- Satvik Pandey
- · Replies 58 ·
Electric Dipole Potential Energy Calculation
- arpon
- · Replies 4 ·
Motion with gravitational, elastic, and friction forces
- henry3369
- · Replies 4 ·
Elastic balloon of volume V in vacuum
- poiuyt
- · Replies 4 ·
Tension in string wound around a falling disk
- arpon
- · Replies 12 ·
Manipulating Mass and Distance to Quadruple Gravitational Force
- rrosa522
- · Replies 1 ·
Which Expressions Describe Traveling Waves and Their Velocities?
- shanepitts
- · Replies 1 ·
Fluid Mechanics: Rotating cylinder viscometer
- Feodalherren
- · Replies 4 ·
Distinguishing between Raw Egg and Hard-Boiled Egg
- andyrk
- · Replies 5 ·
Showing functions are eigenfunctions of angular momentum.
- Robsta
- · Replies 5 ·
Why is my time calculation for the ball's flight incorrect?
- redroomreflex
- · Replies 15 ·
Electron trajectory between charged plates with 45° initial angle
- rlc
- · Replies 32 ·
How much deeper does the barge lower?
- keithcuda
- · Replies 3 ·
Projectile motion -- launched 60° above the horizontal
- thegoosegirl42
- · Replies 6 ·
Is the decay constant , constant for all isotopes of element
- CivilSigma
- · Replies 5 ·
Relativity and kinetic energy, mass-energy systems
- Am.obrien
- · Replies 8 ·
Projectiles, and acceleration problems
- SpiralStars
- · Replies 4 ·
Slinky transverse pulse travel time with stretched length 8.2 m
- andkand97
- · Replies 10 ·
New Velocity/Distance Question 1/25
- ilh
- · Replies 4 ·
Motion between two charged surfaces, find initial speed
- rlc
- · Replies 13 ·
Electrion moving between two parallel plates
- toothpaste666
- · Replies 13 ·
Roman Inverted Siphons and Fluid Dynamics
- NexPhil
- · Replies 6 ·
How Do You Calculate the Increase in Internal Energy for Neon in a Tank?
- PhysicStud01
- · Replies 13 ·
What's the Force Exerted? and how long it takes to stop
- Hoyin
- · Replies 3 ·
What's the speed of ball when travelling over the fence?
- Hoyin
- · Replies 5 ·