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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Calculating electron charge in lab
- bfusco
- · Replies 2 ·
Horizontally missed target, By how much?
- lisa1220
- · Replies 3 ·
Finding apparent depth with refraction at water surface
- rocapp
- · Replies 3 ·
Finding m1's coordinates from center of mass (L/4, −L/5)
- dgx
- · Replies 3 ·
Potential Energy in two springs system problem
- Eohlas
- · Replies 6 ·
What Causes Tension in a Whirling Rope?
- amiras
- · Replies 1 ·
Why use Moon's cross-sectional area instead of half surface area for reflected power
- mell0r
- · Replies 2 ·
Electric Flux through a Closed Hemisphere Question
- ehabmozart
- · Replies 3 ·
Two projectiles, displacement vs. time
- anoorani
- · Replies 3 ·
How Long to Reach Maximum Height in Projectile Motion?
- RuthlessTB
- · Replies 3 ·
Finding Force to Pull 150lb Sled on Horizontal Surface
- science_again
- · Replies 5 ·
Gravitational force integral for Keplerian velocity in a disk galaxy
- Sefrez
- · Replies 9 ·
Does Lens Thickness Affect Its Focal Length?
- JoeN
- · Replies 10 ·
Finding an objects surrounding temperature
- Xek_0003ad64
- · Replies 1 ·
Deriving the white dwarf mass-radius relationship
- PeteWheatstraw
- · Replies 2 ·
How to find speed with just height given?
- Sneakatone
- · Replies 4 ·
Finding polarizing angle from critical angle for total internal reflection
- OnceKnown
- · Replies 10 ·
Magnetic Moment- Spin System - Probability
- VVS
- · Replies 5 ·
Photon energy equal to de Broglie wavelength of relativistic electron
- daselocution
- · Replies 2 ·
Omggg Determining voltage between point a and b given R = 40 ohms
- riseofphoenix
- · Replies 4 ·
How Do You Calculate the Energy of Particles Using De Broglie's Equation?
- Von Neumann
- · Replies 3 ·
Theory of relativity - proton entering a medium
- Saitama
- · Replies 35 ·
Work and energy problem with height and gravitational force
- idllotsaroms
- · Replies 4 ·
Thermodynamics, Clausius-Clapeyrons equation
- Log
- · Replies 10 ·
How do we find the period without using the amplitude?
- Shinaolord
- · Replies 6 ·
What is the Form of the Lennard-Jones Potential Between Two Water Molecules?
- ProPatto16
- · Replies 1 ·
Free Body Diagram to find Force
- REM683
- · Replies 1 ·
Calculating Braking Force and Stopping Distance for an Automobile
- Sneakatone
- · Replies 5 ·
Alternating Current Generator (Magentic Field.)
- SherlockOhms
- · Replies 17 ·
Work done by force F_x(x)=2x²+8x from x=3 to x=5 m
- Sneakatone
- · Replies 17 ·
Light problem with a mirror and a lens
- jgpenn12
- · Replies 4 ·
How can gravity act as a force on stationary objects
- jayjay55531
- · Replies 7 ·
Finding how far a box must be from support C to tip a board on 3 roller pins
- REM683
- · Replies 3 ·
Current Carrying Rod On Inclined Plane.
- SherlockOhms
- · Replies 12 ·
Collision and conservation of energy
- ShizukaSm
- · Replies 4 ·
Finding voltages at nodes A, B, C using superposition
- nchin
- · Replies 6 ·
Deriving internal resistance from a 1/V_R vs 1/R graph
- safat
- · Replies 7 ·
Basketball force/momentum problem
- quark001
- · Replies 8 ·
What causes the sound to become louder in a tuning fork experiment?
- bhoul
- · Replies 1 ·
Piston Conundrum: Does it Move?
- glycerunnin
- · Replies 3 ·
Math in Maxwell needle method- the formula the moment of inertia
- Outrageous
- · Replies 9 ·
X-ray wavelength and frequency from 100-keV electrons
- Von Neumann
- · Replies 2 ·
Friction on horizontal rough surface (finding tension)
- coconut62
- · Replies 11 ·
Calculating Resistance for Cylindrical Shell Resistor
- CSGuy123
- · Replies 2 ·
A Falling Rod's Intersection Moving Faster Than Light?
- LoadedAnvils
- · Replies 2 ·
Finding the Tension in a Rope (Circular motion)
- indecisive727
- · Replies 6 ·
Trying to find the angular speed of a rod.
- thyrgle
- · Replies 8 ·
Change in potential energy of elastic strip under deformation
- eutectic
- · Replies 10 ·
Leaning sticks on a horizontal surface
- zeralda21
- · Replies 9 ·
Find the correct frequency so two waves are in phase
- Jalo
- · Replies 3 ·
How to find magnitude of initial displacement?
- Sneakatone
- · Replies 4 ·
Probability, Minimal Telephone Lines needed
- VVS
- · Replies 3 ·
Is the Straight Line in a Carnot Cycle Graph Isobaric or Isothermal?
- gema
- · Replies 1 ·
Electric fields through parallelepiped
- Fluxthroughme
- · Replies 1 ·
Semi-infinite non-conducting rod
- kinof
- · Replies 3 ·
Classical/Relativistic electron through a potential difference
- Hakkinen
- · Replies 5 ·
Can the Brightness of Light Bulb C be Increased by Cutting a Wire?
- devilaudy
- · Replies 2 ·
Solve Schrodinger equation for an eletron in a box. Why discrete?
- tsuwal
- · Replies 2 ·
Kinetic energy of water pouring
- kox
- · Replies 3 ·
Using Steam Tables to Solve Part (b) - Find Initial and Final Temps
- theBEAST
- · Replies 7 ·
Net force on pole vaulter pushing at 80 degrees below horizontal
- tooperoo
- · Replies 15 ·
Energy of photons from Balmer series
- Fluxthroughme
- · Replies 4 ·
Damped Harmonic Oscillator/Resonance
- CAF123
- · Replies 25 ·
Maximum Charge in an LC circuit.
- InertialRef
- · Replies 1 ·
Compressed air temperature and volume changes in an engine cycle
- InquisitiveOne
- · Replies 16 ·
Charge density on inner and outer surfaces of a conducting shell
- ehabmozart
- · Replies 1 ·
Atomic bonding calculation for crystal structure
- smg__90
- · Replies 1 ·
What is the Work Done on an Object on an Incline with Constant Velocity?
- Mangoes
- · Replies 1 ·
Resistors in series and in parallel
- Moninder
- · Replies 1 ·
Thinnest film that will give constructive interference for red light
- prettykitty
- · Replies 3 ·
How to find current in parallel and series?
- Moninder
- · Replies 1 ·
Calculating Work Done by a Steady Wind in a Given Direction
- Sneakatone
- · Replies 10 ·
Marterial Science (Chemistry Related) Problem
- Double A
- · Replies 4 ·
How Can I Solve for Acceleration in This Friction Problem?
- sankalpmittal
- · Replies 18 ·
Fields through an insulating slab
- Fluxthroughme
- · Replies 5 ·
How Do You Analyze Forces in a Non-Slipping Book Stack Scenario?
- nubshat
- · Replies 5 ·
How to Calculate Electrical Power from Water Flow Rate?
- calbolan
- · Replies 3 ·
How to find work from mass, friction given?
- Sneakatone
- · Replies 12 ·
Tricky question involving masses, a pulley on incline with friction
- totallyclone
- · Replies 27 ·
Calculating net work done on an accelerating box.
- klmgirly
- · Replies 1 ·
Calculating Bx for Two Coaxial Cylindrical Conductors
- Gee Wiz
- · Replies 16 ·
Find work from additional spring compression
- Sneakatone
- · Replies 2 ·
Statics Springs Design Problem
- jklops686
- · Replies 8 ·
Deriving the Wein displacement law
- Fluxthroughme
- · Replies 1 ·
How Does Earth's Potential Energy Change from Perihelion to Aphelion?
- Robertoalva
- · Replies 6 ·
Altitude of Satellite Orbit in 4.4 Hours
- Robertoalva
- · Replies 10 ·
Electric field inside non conducting sphere
- Fluxthroughme
- · Replies 4 ·
Changes in velocity with Direction change
- skatergirl
- · Replies 3 ·
Find the current in the copper wire
- Maiq
- · Replies 5 ·
Motion in a Plane-Finding velocity and displacement
- skatergirl
- · Replies 13 ·
What is the speed of the m1 piece after the explosion?
- burton95
- · Replies 4 ·
Explain how do we get standard error.
- Outrageous
- · Replies 8 ·
Oscillation of a vertical spring
- CAF123
- · Replies 60 ·
Calculate angular momentum of a planet only velocities and radii known
- eb446
- · Replies 1 ·
Spring scale reading for two 5kg masses hanging over pulleys
- mcnealymt
- · Replies 10 ·
Can a Cloud Containing 8 Solar Masses Collapse?
- Meganwright
- · Replies 1 ·
SHM (finding the phase constant)
- MarcL
- · Replies 1 ·
Photon energy and specific heat capacity
- Fluxthroughme
- · Replies 1 ·
Horizontal Force on a Gate Hinge?
- SQUIDDO
- · Replies 3 ·
Rotation of a uniform rigid disc about a fixed smooth axis
- Zatman
- · Replies 9 ·