Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Half-value thickness for barium 137m
- fleetingmoment
- · Replies 2 ·
Crystal frames problem, what actually asking?
- frostysh
- · Replies 2 ·
Compound Microscope: Calculating Image Location with Two Lenses
- gspsaku
- · Replies 4 ·
Capacitance capacitor parallel plate with dielectric (Gauss)
- Ark236
- · Replies 1 ·
Are Your Calculations for Energy and Friction Correct?
- HaoPhysics
- · Replies 2 ·
How does the radius affect frictional force in circular motion?
- HaoPhysics
- · Replies 7 ·
How is kinetic energy affected by different reference frames?
- penutbutr
- · Replies 10 ·
What does net forward thrust mean for an airplane towing a glider?
- scottshannon
- · Replies 12 ·
Why there's a reading on the voltmeter connected to coil Q?
- Asad Raza
- · Replies 5 ·
Tarzan swings on vine, will it snap?
- ewalker31438
- · Replies 3 ·
Lorentz force - particle in an odd magnetic field
- Toby_phys
- · Replies 1 ·
Why does Carnot theorem proof work only one way?
- Ruby_338
- · Replies 5 ·
Block compressing spring on friction surface with variable acceleration
- ILOVEPHYSIC
- · Replies 3 ·
The collimated parallel beam of a LASER
- Asmaa Mohammad
- · Replies 4 ·
How Do You Calculate the Magnetic Field Inside a Solenoid?
- Arman777
- · Replies 2 ·
Electric field through an aperture
- Buffu
- · Replies 19 ·
Normal force on 74 kg person in accelerating elevator
- TheFlemster
- · Replies 14 ·
Charges in Magnetic Fields from Surfing Physics book
- alv
- · Replies 5 ·
The strength of induced electric field
- Rahulrj
- · Replies 18 ·
Net Force acting on block on incline
- TheFlemster
- · Replies 1 ·
Calculating work of Otto cycle stages - Thermodynamics.
- Pull and Twist
- · Replies 1 ·
Energy and Momentum [Spring (word problem)]
- AlexisFair
- · Replies 3 ·
Net Positive Charge on 1km Power Line
- Buffu
- · Replies 17 ·
How do I use the number of oscillations given?
- baldbrain
- · Replies 18 ·
Speed of Sound using a Resonant tube
- baldbrain
- · Replies 12 ·
What Is Incorrect About Grounding in Electromagnetic Theory?
- Rahulrj
- · Replies 20 ·
Velocity of particle leaving wedge
- WubbaLubba Dubdub
- · Replies 12 ·
Find the velocity of block a using vector method.
- Dusty912
- · Replies 6 ·
Op-amp circuit with feedback: finding output voltage using KCL
- brk51
- · Replies 9 ·
What Force Acts Between Hemispheres of a Charged Soap Bubble?
- Buffu
- · Replies 14 ·
By how much is each post compressed?
- Wimpalot
- · Replies 5 ·
Energy of the photon emitted in a gamma ray decay
- Rahulrj
- · Replies 19 ·
Inclined plane - a small sphere, a big sphere and a cylinder
- ChessEnthusiast
- · Replies 13 ·
Potential energy by concentric shells
- Buffu
- · Replies 1 ·
Field due to ring charge at x-y axis.
- Buffu
- · Replies 5 ·
Why does a ring have zero work if it travels a distance?
- Yuval M
- · Replies 5 ·
Conservation of Angular Momentum with SHM
- Lianne Evans
- · Replies 8 ·
What Is the Minimum Coefficient of Friction for a Tilted Cube?
- WilliamDaFoe
- · Replies 3 ·
How Does Impulse Affect Acceleration and Tension in a Disk-Particle System?
- WubbaLubba Dubdub
- · Replies 30 ·
Calculating the angle of a double-slit experiment
- MadMartigan
- · Replies 14 ·
Solving separable ODE for gas density in rotating cylinder
- IneedPhysicsss
- · Replies 7 ·
When does moving a charge increase electrical potential energy?
- Nathan phisi
- · Replies 4 ·
How Can I Estimate Neutron Energy in an Elastic Collision with an Oxygen Atom?
- sportcardinal90
- · Replies 1 ·
Work, Gravitational Potential and Kinetic Energy, Spacecraft
- ashyyamora
- · Replies 6 ·
How to linearise this equation for experiment?
- Wimpalot
- · Replies 9 ·
Calculating Final Pressure for a Metal Undergoing Temperature and Volume Changes
- zenicorn
- · Replies 1 ·
How to Determine Centroid of Gate Hydrostatics
- ScareCrow271828
- · Replies 2 ·
Understanding an equation in a dynamics spring problem
- Bunny-chan
- · Replies 4 ·
How deep does a 9cm wooden post submerge in water?
- tennisgirl92
- · Replies 20 ·
Calculating Spring Constant From Plot of T^2 versus r^2
- Physics Dad
- · Replies 4 ·
How Does Wind Turbine Blade Length Affect Power Output?
- shk
- · Replies 2 ·
Moment of inertia of two perpendicular rods linked at 90 degrees
- Gunter_ZA
- · Replies 1 ·
Force needed for hole punch in Metal
- SpiraRoam
- · Replies 1 ·
Special Relativity Conceptual Question
- Dongus
- · Replies 4 ·
Problem with Energy Dissipation
- sojo
- · Replies 5 ·
Finding tension in a swinging rider problem
- Gunter_ZA
- · Replies 2 ·
Projectile fired vertically at 11.4 km/s: finding maximum height
- giantf
- · Replies 25 ·
Oscillation in a hole through the Earth (hole is offset)
- Carbon123
- · Replies 2 ·
Find maximum acceleration given the displacement equation
- edgarpokemon
- · Replies 11 ·
Spring elastic potential, removing mass
- HaoPhysics
- · Replies 6 ·
Why sin and cos are swapped for bead on circular hoop
- efn
- · Replies 9 ·
Finding the volume of a 410 kg bluefin tuna at 15 m depth
- tennisgirl92
- · Replies 9 ·
How Does Friction Affect Spring Compression in a Bullet Collision?
- Deadawake
- · Replies 13 ·
Conceptual question with Concentric Shell Potental
- Manodesi524
- · Replies 1 ·
What's the Velocity at the Highest Point of a Swing?
- Oliver919
- · Replies 10 ·
Is the AP Physics 1 textbook flawed in its explanation of moment of inertia?
- Ercillent
- · Replies 5 ·
Gravitational Force in terms of Density?
- EthanVandals
- · Replies 7 ·
Height of falling object vs. compression of spring
- HaoPhysics
- · Replies 1 ·
Why does holding a weight above my head tire me if no work is done?
- HaoPhysics
- · Replies 4 ·
Basic trigonometry in dynamics force problem
- Bunny-chan
- · Replies 3 ·
Trouble with 2 step velocity transformation in SR
- MikeLizzi
- · Replies 17 ·
Calculating the energy of anti neutrino
- Rahulrj
- · Replies 10 ·
Calculate angular velocity of a ball rolling down incline?
- Dinkleberg
- · Replies 6 ·
Pulling a puck through the hole
- Nabin kalauni
- · Replies 7 ·
What Is the Correct Source Voltage Amplitude for Desired Power in an AC Circuit?
- superslow991
- · Replies 19 ·
Why do equal impulses give equal final momenta, not velocities?
- Avefan
- · Replies 1 ·
Statics and Rotational Dynamics
- TheFlemster
- · Replies 16 ·
How to find the magnitude of the acceleration given F, kF, m
- Nairb
- · Replies 5 ·
Find the change in height of a bridge
- frozen-pizza
- · Replies 3 ·
Calculating Velocity at the Bottom of a Quarter Circle Track
- tennisgirl92
- · Replies 8 ·
Error Transmission (Moment of Inertia)
- Const@ntine
- · Replies 4 ·
Coefficient of performance of refrigerator
- Elias Waranoi
- · Replies 2 ·
Time required for disk to reach angular speed?
- Rijad Hadzic
- · Replies 11 ·
Number of modes in optical fiber
- says
- · Replies 1 ·
Finding magnitude of two charge given midpoint
- paulie
- · Replies 1 ·
Understanding Internal Energy Changes in Phases of Water
- SpiraRoam
- · Replies 8 ·
Trying to solve conservation of momentum problem
- patric44
- · Replies 14 ·
Find Absolute Magnitude, distance and "T" of binary star system
- Unteroffizier
- · Replies 10 ·
Ratio of rotational inertias for belt-connected wheels
- kuuy
- · Replies 7 ·
What is the relationship between power in watts and power in dBW?
- Torrie
- · Replies 11 ·
How to calculate the tension in a beam of a bridge?
- Wimpalot
- · Replies 29 ·
Girl on a swing, find tension and force
- Feodalherren
- · Replies 32 ·
The minimum KE required for muons to travel a given distance
- Rahulrj
- · Replies 10 ·
Frictionless ring sliding on circle in constant acceleration
- Feodalherren
- · Replies 16 ·
How Is Torque Calculated in a Wrecking Ball Scenario?
- Rijad Hadzic
- · Replies 9 ·
Was the Second Driver Speeding in the Collision?
- Rijad Hadzic
- · Replies 10 ·
Magnitude of net Gravitational Force
- Jonwolf5400
- · Replies 1 ·
Equilibrium of Charges at Circumference of a Circle
- Buffu
- · Replies 5 ·
Writing Kirchhoff Rules for a Multi-Loop Circuit
- carterq
- · Replies 5 ·
Frequency of Vibration of Two Masses Joined by a Spring
- flamespirit919
- · Replies 15 ·