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 - Calorific Capacity
- Jalo
- · Replies 1 ·
Apparent depth of object in pool using 5 degree ray angle
- link107
- · Replies 1 ·
Angular acceleration and displacement problem
- Lotus93
- · Replies 1 ·
Calculating the moment of inertia in a pulley system
- mldavis086
- · Replies 2 ·
First Bohr Radius - Quantum and Atomic Model
- PeachBanana
- · Replies 7 ·
Ball rolling down a ramp vs dropping: why do they have equal kinetic energy?
- Fifty
- · Replies 13 ·
Prove that a cylinder has the least moment of inertia
- whyme1010
- · Replies 12 ·
Hello, good people - Flagpole rigidity questions
- TameTroll
- · Replies 5 ·
Gravitational potential energy, orbital speed, binding energy.
- Lolagoeslala
- · Replies 3 ·
Gravity on Earth: 70% Value Above Surface?
- zzinfinity
- · Replies 2 ·
How Do You Calculate the Speed of a Bungee Jumper 19m Below the Launch Point?
- BlueCardBird
- · Replies 7 ·
When should I consider the sign of charges when applying Coulomb's Law?
- panther1
- · Replies 2 ·
Thermal Physics: Ice skating temperatures
- H.fulls
- · Replies 4 ·
Surface tension of a torus raindrop
- peripatein
- · Replies 4 ·
Temperature of gas when internal energy is constant
- sgstudent
- · Replies 10 ·
Calculating the scale factor (cosmology) for a universe starting at the Big Bang
- Hangst
- · Replies 2 ·
How Much Energy Is Required to Launch and Escape a Satellite from Earth's Orbit?
- Lolagoeslala
- · Replies 4 ·
Thermodynamics: Third World Bacteriological Test
- Bennigan88
- · Replies 3 ·
Thermal Energy problem - Ice placed in water
- Bobazoide
- · Replies 1 ·
Showing F = ix²y³ + jx³y² is conservative and finding U(x, y)
- daivinhtran
- · Replies 7 ·
Maximum Energy Stored in a Capacitor in an AC circuit
- TMO
- · Replies 6 ·
Oil slick equilibrium surface area and time to steady state
- rico22
- · Replies 4 ·
Force on a wire, by a current carrying wire.
- bfusco
- · Replies 3 ·
Which statement about orbital velocity is incorrect
- 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 ·
Two-block pulley system with friction on incline
- AntonioMD
- · Replies 5 ·
Torque multiple choice question needing explanation
- wolk
- · Replies 3 ·
Why does satellite velocity decrease at higher orbits?
- 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 ·
Orbital force when moon distance and velocity change
- 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 ·
Finding the phase angle δ in y(x,t)=Asin(k(x-vt)+δ)
- RockenNS42
- · Replies 5 ·
Velocities with a resulting horizontal component
- Surgikill117
- · Replies 3 ·
Multiple resistors not in series / parallel
- trollcast
- · Replies 12 ·
Finding track length for doubled sliding time with constant acceleration
- 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 done lifting water from a well and giving it kinetic energy
- 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 ·
Speed at height h for three balls and cart collision reversibility
- bored2death97
- · Replies 17 ·
Energy combined with Circular Motion
- phyzz
- · Replies 1 ·
Gas state change with temperature and volume change: finding final pressure and volume
- Questions999
- · Replies 2 ·
Battery charging circuit problem
- trollcast
- · Replies 12 ·