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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Escape Velocity of a Neutron Star: Relativistic Calculation
- TheSodesa
- · Replies 1 ·
Calculating the charge densities
- diredragon
- · Replies 5 ·
Determine the density at which it sinks -- experiment
- neverlnd
- · Replies 1 ·
Finding the probability to find a particle in a well
- Vitani11
- · Replies 2 ·
Finding equilibrium temperature when two gas chambers mix
- Ron Burgundypants
- · Replies 5 ·
Motion of an electron in a nonuniform magnetic field
- ChessEnthusiast
- · Replies 3 ·
Accounting for Air Resistance in Conservation of Energy Lab with Bouncing Ball
- nbrady
- · Replies 13 ·
What was the speed of Sputnik I at its perigee?
- ChloeYip
- · Replies 18 ·
Find angle for the ring to be in equilibrium
- AntonPannekoek
- · Replies 2 ·
Block slipping against two blocks
- Vibhor
- · Replies 1 ·
Position of an oscillating object
- ChloeYip
- · Replies 4 ·
How to find acceleration from force and time?
- SpiraRoam
- · Replies 8 ·
A child pulls a wagon by the handle along a flat sidewalk.
- SilentWind12
- · Replies 2 ·
What does this equation mean? angular acceleration
- benlearnsphysics
- · Replies 2 ·
What is the tension in the rope that connects the tugboat
- emily081715
- · Replies 15 ·
How Does Torque Relate to Magnetic Dipole Moment in Physics?
- ghoul
- · Replies 3 ·
Average of speeds versus magnitude of average velocity
- Const@ntine
- · Replies 8 ·
Fourier Components of a Rope's Motion: Calculating the Complete Expression
- Unicorn.
- · Replies 1 ·
Angular Acceleration of a Flywheel Lab
- Shelby8
- · Replies 7 ·
Determining the the index of refraction
- kubajed
- · Replies 45 ·
What is the momentum of the pellet?
- emily081715
- · Replies 9 ·
Thermo: isothermal, reversible expansion of ideal gas
- Ryaners
- · Replies 4 ·
Finding the period of small vertical oscillations
- green-beans
- · Replies 10 ·
Addition of masses in relativistic collision
- Toby_phys
- · Replies 2 ·
How Do You Solve a Complex Energy Pulley Problem?
- Cade Kingston
- · Replies 9 ·
Infinite Atwood Machine (Morin Problem 3.3)
- L = K - U
- · Replies 3 ·
How to calculate the mutual inductance?
- ayoubster
- · Replies 3 ·
How to find the maximum induced current for a diamond-shaped loop?
- NkaujHelp
- · Replies 1 ·
Collision & Impact Homework: ClarkGriswold, 30m/s, 50kg, 20kg, 15kg
- Just_enough
- · Replies 1 ·
Concentric Coils EMF from Graph
- Minescrushessouls
- · Replies 19 ·
Finding the distance traveled by a steamer
- green-beans
- · Replies 5 ·
What is the role of F0 in the force exerted by compressed air on a pellet?
- emily081715
- · Replies 11 ·
Balloon in Train: Angles of A, B, and C Explained
- Hamal_Arietis
- · Replies 21 ·
What is the uncertainty in 5.00mm measured by analog device?
- MPZ
- · Replies 1 ·
Thermodynamics -- first and second law concepts
- Any Help
- · Replies 2 ·
Archived Did I Apply Malus' Law Correctly for Three Polarizers?
- IHateMayonnaise
- · Replies 1 ·
Kinematics - trajectory formula
- quas
- · Replies 7 ·
Solving Part c of Repulsive Force Homework Problem
- physics148
- · Replies 2 ·
A question about work and energy
- Prem1998
- · Replies 5 ·
Calculating Particle Speed with Velocity-Dependent Force
- ssmooc
- · Replies 1 ·
Momentum conservation when clay block collides with cart
- ryankunzzz
- · Replies 4 ·
Back EMF Equation and Calculating A/C Starter Current | Homework Example
- Girn
- · Replies 2 ·
Calculate the electric potential of a sphere
- doktorwho
- · Replies 4 ·
Ladder sliding down with no friction
- Dustgil
- · Replies 11 ·
How do I calculate the velocity of a two-ended rocket?
- Eclair_de_XII
- · Replies 38 ·
What is the Change in Kinetic Energy of a Crate Being Pulled at an Angle?
- Joshua Lee
- · Replies 1 ·
Solve Masses on a Spring: Compression Distance D vs d
- joseph_kijewski
- · Replies 2 ·
Calculating Mass of Cannon Ball with Given Velocity Using Work-Energy Theorem
- Joshua Lee
- · Replies 3 ·
How Long Does a Particle Thrown at an Angle Travel Until It Lands?
- annalian
- · Replies 6 ·
What is the change in kinetic energy of the crate pulled up a rough incline?
- Joshua Lee
- · Replies 6 ·
A relativistic electron in a potential box
- TheSodesa
- · Replies 4 ·
What Is the Correct Ratio of Platform Sides to Lift a Car with a Boy's Weight?
- NY152
- · Replies 5 ·
Understanding the Unit Vector: A Conceptual Explanation
- Ashley1nOnly
- · Replies 8 ·
Dynamics how to calculate maximum height on incline
- jakeginobi
- · Replies 15 ·
How Does a Speck of Dust Affect the Motion of a Box on an Inclined Ramp?
- joemost12
- · Replies 33 ·
Second opinion needed at UAV Exercise
- Const@ntine
- · Replies 3 ·
Find gravitational potent. energy - isotropic distribution
- Cocoleia
- · Replies 1 ·
Equation for the boundary of rays turning to plane waves
- Cocoleia
- · Replies 19 ·
Body of mass m is accelerating -- Need to find resultant force
- dokara97
- · Replies 12 ·
Two Blocks and a Pulley Friction Problem
- joemost12
- · Replies 2 ·
How Does Horizontal Force on a Constrained Mass Change with Displacement?
- MalachiK
- · Replies 5 ·
How Does Gas Behavior on a PV Diagram Indicate Changes in Internal Energy?
- Any Help
- · Replies 1 ·
Thermal Physics (Specific Heat Capacity)
- Tikiboom1
- · Replies 1 ·
Solving Momentum & Energy Homework Problem
- Veronica_Oles
- · Replies 9 ·
Finding Initial Block Position and Maximum Speed of Oscillation
- NY152
- · Replies 9 ·
Calculating Acceleration with Multiple Forces Acting on an Object
- SDTK
- · Replies 24 ·
What is the Relative Concentration of Helium at 3 Minutes After the Big Bang?
- DEANS2
- · Replies 17 ·
Calculating work done by gravity
- JustynSC
- · Replies 5 ·
Kinetic Energy of a Particle in a semi-spherical bowl
- Joshua Lee
- · Replies 2 ·
Size of proton, neutron and electron
- Lucy11802
- · Replies 4 ·
How Far Will the Spring Compress in a Frictionless Collision?
- Joshua Lee
- · Replies 3 ·
Finding order of diffraction given angle and wavelength
- AardeeHar
- · Replies 10 ·
KE of alpha particle using integer values of nuclear masses
- moenste
- · Replies 23 ·
What is the magnitude/direction of the E field?
- Vitani11
- · Replies 2 ·
Bernoulli's Equation and pressure differences
- OnAHyperbola
- · Replies 1 ·
Which will experience a greater force when a car hits a wall?
- niveda
- · Replies 3 ·
Photons emitted by Hydrogen and helium atoms
- Elvis 123456789
- · Replies 3 ·
Find the magnitude of the acceleration of the two blocks.
- Angela_vaal
- · Replies 10 ·
Figuring out how to approach capacitor problem
- RoboNerd
- · Replies 9 ·
Projectile Motion - vertical displacement at specific time.
- wheels94
- · Replies 3 ·
Which thermodynamic processes violate the second law of thermodynamics?
- Any Help
- · Replies 5 ·
How Do You Calculate Capacitance for Unity Power Factor in a Single-Phase Motor?
- Reefy
- · Replies 10 ·
Need help with Mechanic Energy math problem.
- Anhkha
- · Replies 10 ·
Two monatomic ideal gases are in thermal equilibrium with ea
- Any Help
- · Replies 8 ·
Probability of Finding a Particle in a Small Interval in an Infinite Square Well
- Vitani11
- · Replies 10 ·
Harmonic oscillation displacement
- Vitani11
- · Replies 8 ·
Control rods nuclear reaction equation, moles liberated, pressure
- moenste
- · Replies 47 ·
Which of the following change when the pressure of an ideal
- Any Help
- · Replies 1 ·
Thermodynamics/ Heat,volume and temperature
- Any Help
- · Replies 17 ·
Center of mass of inverted cone with density ρ(y)=y²
- merricksdad
- · Replies 15 ·
On the definition of width in Doppler broadening problems.
- Isomorphism
- · Replies 3 ·
Calculating Energy Requirements for a Humidifier Operating at the Boiling Point
- Any Help
- · Replies 1 ·
Calculating Final Temperature of Two Solids in Thermal Contact
- Any Help
- · Replies 3 ·
What is the Time to Pivot the Rod with a Spinning Disk?
- Michael Dennis
- · Replies 2 ·
Electric force and electrons transfered
- NihalRi
- · Replies 8 ·
Sphere rolling down incline then up incline?
- Watney
- · Replies 5 ·
Thickness of film for maximum interference
- songoku
- · Replies 13 ·
Thermodynamics -- mono and diatomic gases
- Any Help
- · Replies 2 ·
Conservation of Momentum: Pulley System
- Watney
- · Replies 4 ·
Understanding the Relativity Equation to Solving Homework Problems
- Erenjaeger
- · Replies 1 ·