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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Cylinder in a heat bath @ 0C contains water and ice & is compressed
- zemaitistrys
- · Replies 19 ·
Mass moment of inertia of a composite shape
- marcadams267
- · Replies 5 ·
Work Done on an object by 3 Forces (Very Confused)
- Travis Enigma
- · Replies 4 ·
Find the electric field intensity from an infinite line charge
- math132003
- · Replies 3 ·
Two blocks connected by a rope over a pulley
- goodOrBad
- · Replies 4 ·
Number of balloons that can be filled from a gas cylinder
- songoku
- · Replies 13 ·
Two mirrors meet at a 135 degree angle.... (light ray question)
- kspex2
- · Replies 10 ·
Young's Modulus and the Poisson Ratio of Aluminium
- EvilMarisa
- · Replies 1 ·
Feedback on the concepts surrounding pulley, ropes, friction
- goodOrBad
- · Replies 4 ·
Charge on a particle above a seemingly infinite charge plane
- Amay
- · Replies 2 ·
What is the significance of height in a vertical spring system?
- andrewasd
- · Replies 18 ·
Forces proportional to the sides of a quadrilateral result in a couple
- gnits
- · Replies 5 ·
How Do You Solve a Block on a Slope with a Given Weight?
- goodOrBad
- · Replies 7 ·
Understanding Energy Conservation in Quantized Angular Momentum Transitions
- jjson775
- · Replies 2 ·
Atwood machine calculation for launching a pebble
- dyn
- · Replies 7 ·
Ball on a rotating inclined plane
- EllaRuth
- · Replies 3 ·
Acceleration of a spring - mass system
- songoku
- · Replies 34 ·
Answers to Your Questions: Q1 & Q2
- nolife123
- · Replies 2 ·
Using Kirchhoff's laws on this current division problem
- curiosissimo
- · Replies 12 ·
Inserting a dielectric between the plates of a parallel plate capacitor
- archaic
- · Replies 5 ·
Drag force on a descending sphere
- Est120
- · Replies 6 ·
Help me find the electric field vector
- bln1230
- · Replies 24 ·
Help with centripetal force and friction question please
- takelight2
- · Replies 5 ·
Minimum work needed to climb to the top of a peak
- derpydashie6167
- · Replies 2 ·
What velocity does the particle need to get to point B?
- ClearWhey
- · Replies 5 ·
Finding Minimum A for Equilibrium in a Two Block Problem
- goodOrBad
- · Replies 13 ·
LR Circuit: Answers to Common Questions
- Anirudhhades
- · Replies 8 ·
Help with this Ferris wheel rotational physics problem please
- takelight2
- · Replies 2 ·
Two Masses, a Pulley, and an Inclined Plane
- pkreilley
- · Replies 1 ·
Estimate the initial velocity of the cars after the collision
- peace
- · Replies 29 ·
Electrostatic energy of concentric shells
- Data Base Erased
- · Replies 11 ·
Help finding the equilibrium position of an electric field
- connor8771
- · Replies 10 ·
Pulley and Two Masses -- Newton's Law of Motion
- EvilMarisa
- · Replies 1 ·
Net electric force of multiple charged particles in 3-d space
- Edel Crine
- · Replies 12 ·
Intensity of Stars and the Inverse Square Law Problem
- AN630078
- · Replies 10 ·
Time period of a harmonic oscillator
- VVS2000
- · Replies 6 ·
Normalization of the wave function for the electron in a hydrogen atom
- jjson775
- · Replies 23 ·
Derivation of 3pt forward formula
- jkthejetplane
- · Replies 8 ·
What is Kepler's Formula and How is it Used in Circular Motion and Gravitation?
- Mongster
- · Replies 3 ·
Forces: Pulley and Slope Constraining the Motion of two Masses
- Mongster
- · Replies 7 ·
How do you derive the units for momentum for photons
- TheCelt
- · Replies 4 ·
How Do Electron and Proton Accelerations Compare Between Charged Plates?
- Sj4600
- · Replies 7 ·
Solve this integral involving a quadratic and linear air resistance equation
- happyparticle
- · Replies 30 ·
Solar Panels and Solar Radiation Flux Density Help - Very Confused
- AN630078
- · Replies 35 ·
Non-constant acceleration, solving for velocity
- turtles123
- · Replies 11 ·
Are All 10 Ohm Resistors in Parallel?
- A13235378
- · Replies 3 ·
How far can the person climb up the ladder before it starts sliding?
- ClearWhey
- · Replies 7 ·
The motion of a charged particle in a magnetic field
- peace
- · Replies 9 ·
Electric Potential inside an insulating sphere
- baseballfan_ny
- · Replies 11 ·
Physics lab report calculating resultant forces -- help please
- DanchoSuper
- · Replies 8 ·
Hydrogen Emission Spectrum and Electron Energy Levels
- AN630078
- · Replies 2 ·
Block A Reaches Equilibrium: 92N Force
- goodOrBad
- · Replies 5 ·
Photoelectric Effect Graph and Work Function Questions
- AN630078
- · Replies 25 ·
What's the car's acceleration at a specific point?
- Northern Cardinal
- · Replies 16 ·
Calculating Tension on Strings: Results & Confusion
- Saptarshi Sarkar
- · Replies 4 ·
Seemingly a related rates problem
- archaic
- · Replies 11 ·
Relativity: Relativistic Kinematics and Dynamics
- fingerprintregion
- · Replies 1 ·
Electron moving to the face of plate from depth d
- rtareen
- · Replies 4 ·
Acceleration of masses with rope slipping around rod via Capstan equation
- Poetria
- · Replies 13 ·
The question: Can nitrogen molecules escape from Europa and into space?
- Sudikshya Pant
- · Replies 15 ·
What is the resulting force between the beam CB and E?
- ClearWhey
- · Replies 14 ·
Momentum and force multiple choice
- lpettigrew
- · Replies 1 ·
Maximum velocity of an electron emitted from lanthanum
- lpettigrew
- · Replies 11 ·
Cavity and coals: brightness and its consequences
- LCSphysicist
- · Replies 9 ·
Calculating Time to Reach Highest Point in Theoretical Mechanics Problem
- MerS
- · Replies 4 ·
Contradiction in the formation of an electric dipole
- guv
- · Replies 2 ·
Gravitational Field Strength at the equator and poles
- AN630078
- · Replies 23 ·
Interesting exercise: Torque, radiation, momentum and equilibrium
- LCSphysicist
- · Replies 1 ·
Finding the reqiured fuel mass for a nuclear reaction
- Practical_Fruit
- · Replies 1 ·
A ball thrown at an angle above an inclined plane
- tryingtolearn1
- · Replies 10 ·
Required time and distance calculation of a shock wave
- Edel Crine
- · Replies 29 ·
Precipitation, Runoff and Channel Flows on Titan
- julianscribner
- · Replies 1 ·
Energy of a configuration of two concentric spherical charged shells
- LCSphysicist
- · Replies 3 ·
Potential Energy and raising a satellite from Earth into a Circular Orbit
- AN630078
- · Replies 5 ·
Gravitational Field Multiple Choice Help
- AN630078
- · Replies 5 ·
Force and change in momentum in an inelastic/elastic collision
- AN630078
- · Replies 19 ·
Equation for Fourth Force and its Line of Action?
- gnits
- · Replies 6 ·
Solving Transcendental in Wien's Displacement law
- dcarmichael
- · Replies 5 ·
Lost and in Need of Ideas for Finding Inspiration
- fer Mnaj
- · Replies 8 ·
Determining an object's velocity in cylindrical coordinates
- Marcis231
- · Replies 3 ·
Question about work and finding the force of friction
- zstraught
- · Replies 8 ·
Potential due to a rod with a nonuniform charge density
- archaic
- · Replies 2 ·
What is the focal length of the lens?
- AN630078
- · Replies 20 ·
Finding r of a Jovian-synchronous orbit and escape velocity
- AN630078
- · Replies 7 ·
Finding time from a velocity vector
- ericcy
- · Replies 4 ·
Having trouble with finding this displacement vector
- ericcy
- · Replies 19 ·
Maximum electric field at the surface of a Van de Graaff generator
- archaic
- · Replies 2 ·
Finding the components of this velocity vector
- PleaseAnswerOnegai
- · Replies 9 ·
Difference in Gravitational Potential on the Moon
- AN630078
- · Replies 15 ·
Rearranging gravitational and centripetal equations to derive formulas
- AN630078
- · Replies 3 ·
Sound Wave Interference and Finding the Path Differences with Diagrams
- AN630078
- · Replies 20 ·
Help finding the vertical component of the reaction at C
- mcrooster
- · Replies 2 ·
Question involving Young's modulus (mass hanging from a wire)
- chriscarson
- · Replies 16 ·
Electric field due to a flat hollow disk
- madafo3435
- · Replies 4 ·
Kinematics Question: A motorboat and a log in a stream
- dudu
- · Replies 3 ·
Question regarding the Pressure of a gas flowing from a cylinder into balloons
- zee123
- · Replies 6 ·
Hitting a rocket with a projectile
- MichaelTam
- · Replies 53 ·
How to find Tb and Moments 3D equilibrium of rigid bodies
- mcrooster
- · Replies 12 ·
Beam with a rope - type of problem (Statics)
- goodOrBad
- · Replies 6 ·