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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Thermodynamics: Third World Bacteriological Test
- Bennigan88
- · Replies 3 ·
Thermal Energy problem - Ice placed in water
- Bobazoide
- · Replies 1 ·
Conservative Force: Work Done and Potential Energy Calculation
- daivinhtran
- · Replies 7 ·
Maximum Energy Stored in a Capacitor in an AC circuit
- TMO
- · Replies 6 ·
Help with question regarding surface area
- rico22
- · Replies 4 ·
Force on a wire, by a current carrying wire.
- bfusco
- · Replies 3 ·
Satellites in Orbit: Mass vs Velocity
- vipson231
- · Replies 9 ·
A demonstration on the necessary positive change in the entropy
- Rulonegger
- · Replies 5 ·
Creating a small alarm using a capacitor, resistors etc
- Mosaness
- · Replies 2 ·
How Do You Calculate the Moment of Inertia for a Pulley?
- Lotus93
- · Replies 5 ·
Heat and phase change: latent heat
- alaa410
- · Replies 4 ·
Force with friction problem, Please help
- AntonioMD
- · Replies 5 ·
Torque multiple choice question needing explanation
- wolk
- · Replies 3 ·
Understanding the Infinity Sign for Beginners
- vipson231
- · Replies 3 ·
Determining Compression of a Spring involving Spring Constants
- gomess
- · Replies 2 ·
Torque to rotate spinning gyroscope
- soffish335
- · Replies 4 ·
Calculating Tree Height with a 5cm Mirror
- sofianets
- · Replies 1 ·
Why do objects bounce when considering momentum and Newton's third law?
- Stromthetroll
- · Replies 5 ·
Consider a moon that is 1.15 x 10^6 km from the planet it is orbiting .
- vipson231
- · Replies 3 ·
Circular Motion - RPM and Radius question
- PhysicsNoob76
- · Replies 1 ·
Calculating Light Travel Time for 60 cm
- sofianets
- · Replies 3 ·
Far field intensity distribution
- gboff21
- · Replies 1 ·
Inversion Curve for a gas obeying Dieterici's equation of state
- ncholland
- · Replies 6 ·
Point of application of angular momentum
- serverxeon
- · Replies 12 ·
Which body has the higher average speed?
- shinokk
- · Replies 12 ·
Solving for Frictional Force in Banked Curve Problem
- TheRaiderNati
- · Replies 6 ·
Centripetal Force Minimum Period Question
- Lax0
- · Replies 5 ·
Finding a light source that produces an absorption spectrum?
- Persimmon
- · Replies 3 ·
Center of mass of a disc with a hole
- caspernorth
- · Replies 14 ·
Thermodynamics - Cycle efficiency
- Jalo
- · Replies 2 ·
How to Find Air Pressure in a Vessel Being Evacuated Over Time?
- Saitama
- · Replies 4 ·
The current in a series RL circuit
- BryceHarper
- · Replies 1 ·
Homework AnswerCalculating Force & Distance of Two Masses
- vipson231
- · Replies 2 ·
Gravitational force between disk and particle
- deekin
- · Replies 6 ·
Fluid mechanics water tank level
- utkarshakash
- · Replies 7 ·
Heating coil wire resistance and length of wire required
- servin247365
- · Replies 3 ·
What is the Solution to the Mercury Barometer Problem?
- utkarshakash
- · Replies 10 ·
Calculating Velocity: Child on Ice with Thrown Ball - Physics Help
- ArchAngel1985
- · Replies 2 ·
If the mass of the planet is 1.38 x 10^25 kg and its radius is 4.30 x 10^7 m
- vipson231
- · Replies 2 ·
Trouble deciding on which equation to use in this obscure problem?
- Originaltitle
- · Replies 3 ·
Electrostatic fields in vacuum
- smerep
- · Replies 1 ·
Find Placement Vector of Ball Thrown Ballistically at Angle α from Height H
- Lenjaku
- · Replies 3 ·
Finding the general highest spot-balistick
- Lenjaku
- · Replies 3 ·
Graphically determine resultant vector displacement
- Surgikill117
- · Replies 8 ·
Elastic Collisions: billiard ball problem with a twist
- Benny851
- · Replies 3 ·
Angular momentum problem giving me a headache
- karokr94
- · Replies 6 ·
How Long Will It Take to Fill Archimedes' Bath Using All Three Taps?
- Natasha1
- · Replies 4 ·
Physics Vector Cross Product problem
- majormaaz
- · Replies 6 ·
Newton's Cradle Elastic Collisions: Solving for Ball Height with Varying Masses
- rabbit94
- · Replies 11 ·
Calculating Phase Angle in a Wave Equation: A Practical Guide
- RockenNS42
- · Replies 5 ·
Velocities with a resulting horizontal component
- Surgikill117
- · Replies 3 ·
Multiple resistors not in series / parallel
- trollcast
- · Replies 12 ·
Classical physics: Motion question
- d3nat
- · Replies 8 ·
The relationship between Kinetic Energy and Position
- BizzPhizz
- · Replies 4 ·
Finding time with force, mass and velocity
- Ally385
- · Replies 6 ·
Clausius-Mossotti Equation and Dielectric Constants of Air
- Blastrix91
- · Replies 2 ·
What is the Speed of the Image in Optics?
- Lara_C
- · Replies 2 ·
How Far Should an Object Be Placed from a Concave Mirror to Halve Its Size?
- skg94
- · Replies 3 ·
Refraction at a spherical surface
- Kurokari
- · Replies 1 ·
How Can I Find the Point of Force Application Using a 6-Axis Force Sensor?
- The-alexandra
- · Replies 7 ·
Fluid mechanics of floating wood
- utkarshakash
- · Replies 9 ·
2 equal masses raised on pulley at constant velocity, what is the force ?
- mldavis086
- · Replies 3 ·
Leg Presses Work Energy Theorem Confusion
- ehabmozart
- · Replies 1 ·
Potential Step where E>V0. λ(II) always twice λ?
- ZedCar
- · Replies 1 ·
Force, Mass and Acceleration Problem
- blondii
- · Replies 9 ·
Find a balls speed at a certain time with impulse chart
- Ally385
- · Replies 3 ·
Calculate the thrust acting on a rocket
- ASidd
- · Replies 1 ·
Calculating Horizontal Velocity with Angles
- Surgikill117
- · Replies 1 ·
Finding speed of water flowing in a pipe with changing diameter
- aija
- · Replies 5 ·
What is the weight of a balloon filled with air?
- utkarshakash
- · Replies 8 ·
Solving Final Temperature of Copper-Water Mixture
- sadifermi
- · Replies 4 ·
Phase Angle Analysis of RC Circuits
- nhenzie
- · Replies 2 ·
Work Energy Theorem Homework: Water Pump Power Output
- ehabmozart
- · Replies 1 ·
What does the value for 'c' represent in Hooke's Law?
- iamBevan
- · Replies 7 ·
How Do You Calculate the Acceleration of a Bucket on a Pulley System?
- dolpho
- · Replies 3 ·
Static equilibrium with Youn modulus
- Toranc3
- · Replies 6 ·
Hooke's Law and Work Energy THeorem
- ehabmozart
- · Replies 7 ·
Verify Final Temperature of Cu-Water System?
- pmalayavech
- · Replies 3 ·
Ramsauer-Townsend equation. Joules or eV?
- ZedCar
- · Replies 1 ·
Which speed is greater? Different question, Is this possible?
- bored2death97
- · Replies 17 ·
Energy combined with Circular Motion
- phyzz
- · Replies 1 ·
Physics question here help please.Is my solution correct?
- Questions999
- · Replies 2 ·
Battery charging circuit problem
- trollcast
- · Replies 12 ·
What Is the Final State of an Ideal Gas After Temperature and Volume Changes?
- Questions999
- · Replies 5 ·
How to Calculate the Total Resistance in a Circuit?
- [KNIGHT]
- · Replies 11 ·
Simple harmonic motion of a machine part
- kaywond
- · Replies 4 ·
Finding force on a pole held by wires using vectors
- bluebirdzass
- · Replies 2 ·
How does increasing the density of a ruler affect its balance?
- NasuSama
- · Replies 2 ·
Fixed Ended Beam applied to couple moment
- socrates_1
- · Replies 6 ·
Solve Kinematic Problem: Ball Falls 1.52m from Table
- assaftolko
- · Replies 2 ·
Nuclear decay activity - value for money?
- Silversonic
- · Replies 1 ·
Mechanical force on unit area of charged conductor.
- AlchemistK
- · Replies 4 ·
How do I calculate the frequencies of the following?
- riseofphoenix
- · Replies 3 ·
How Does an Electron's Path Curve in a Magnetic Field?
- Kennedy111
- · Replies 3 ·
Pressure, volume and work done in an ideal
- jh128273
- · Replies 2 ·
Solve Torque Problem: 1.42M at 41.6 cm?
- NasuSama
- · Replies 2 ·
Finding final velocity with variable acceleration due to air resistance
- T. Haverford
- · Replies 3 ·
How Far Can a Painter Walk on a Plank Before It Tips?
- Toranc3
- · Replies 15 ·
How Do Significant Figures Affect Calculations in Physics Problems?
- zed101
- · Replies 3 ·
Calculate the height from the speed of sound
- Julio Cesar
- · Replies 2 ·