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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Why is torque zero when a person walks to the center of a rotating platform?
- Miike012
- · Replies 3 ·
Bernoulli equation in terms of energy per unit volume
- zainulariffin
- · Replies 2 ·
How Do You Calculate Normal Force for a Cup and Saucer on a Table?
- Snape1830
- · Replies 3 ·
What Is the Direction of Precession for a Rotating Bicycle Wheel?
- Terrell8763
- · Replies 1 ·
2D Kinematics Problem w/ Coefficient of Friction?
- charliexx09
- · Replies 5 ·
Advancing Your Physics Knowledge: Recommended Books
- Miike012
- · Replies 1 ·
Amplitude of sum of waves with different frequencies
- imago
- · Replies 2 ·
Standard Harmonic Motion of a Plate
- vdipaola
- · Replies 3 ·
Figureing fps of a projectile with points of impact at 50yards and 25 yards
- cramerklontz
- · Replies 4 ·
Thermal expansion of an aluminum bar
- austindubose
- · Replies 1 ·
Mechanics of Materials - Where's my mistake?
- Femme_physics
- · Replies 35 ·
Configuring op-amp to supply constant current
- Collisionman
- · Replies 1 ·
Centripetal acceleration at two different points on the earth
- hms.tech
- · Replies 6 ·
How Do You Label Forces in Multi-Body Systems?
- Miike012
- · Replies 3 ·
Why do wrecking balls amplify damage done?
- tahayassen
- · Replies 2 ·
Calculating gravitational force on asteroid M1 from two other asteroids
- MrRandom66
- · Replies 10 ·
Finding point A on a force's line of action from moment about B
- Minamatta
- · Replies 12 ·
Physics IB EE ideas and Gallieo's results
- Roocow
- · Replies 1 ·
Heat transfer between hot iron and water at different temperatures
- iSasha
- · Replies 9 ·
Solving Glob on Table Homework: Final Speed & Angular Velocity
- Smartguy94
- · Replies 1 ·
Torques on a rod
- physicsguy101
- · Replies 3 ·
Finding angular speed of a system about its center of mass after the impact
- Smartguy94
- · Replies 1 ·
What Defines the Properties of All Electromagnetic Radiation?
- Nitrate
- · Replies 2 ·
Why Is There an Antinode at the Open End of an Organ Pipe?
- VictoriaWoo
- · Replies 1 ·
Calculating Volume Change of 1.00 Gallon Water at Varying Pressure Depths
- MoBaT
- · Replies 1 ·
What is the Relationship Between Intensity and Wattage?
- tadisc
- · Replies 1 ·
Velocity of Pulley: Mass 1 & 2, Frictionless Disk
- Miike012
- · Replies 3 ·
Doppler effect and relative motion
- trulyfalse
- · Replies 1 ·
What is the Efficiency of a Gas Machine in an A->B->C Change?
- the_man
- · Replies 4 ·
A standing wave on a string with a mass hanging on it
- paul11
- · Replies 1 ·
What Is the Acceleration of a Wagon Pulled at an Angle?
- lec0x
- · Replies 5 ·
Finding Velocity of Particles in 'Free Space'?
- Cryptologica
- · Replies 18 ·
Calculating free-fall acceleration of other planets
- menglish20
- · Replies 4 ·
Center of gravity of book overhang
- adamc637
- · Replies 9 ·
Torque vs Work through Distance
- physicsguy101
- · Replies 2 ·
Question on torue(center of mass being important I think)
- Crusaderking1
- · Replies 4 ·
Solving Force Due to Friction on a Car
- xxharulover
- · Replies 3 ·
Is acceleration constant when a disk is rolling down a ramp?
- goomer
- · Replies 3 ·
Grade 11 physic problem; calculating heat transfers?
- raininggently
- · Replies 2 ·
Bullet in Block- 2D Projectiles w/ Motion
- physicsluv
- · Replies 4 ·
How Do You Calculate Proton Velocity Components in a Magnetic Field?
- frankfjf
- · Replies 3 ·
How Do You Calculate the Coefficient of Kinetic Friction for a Rolling Ball?
- ljhao1992
- · Replies 7 ·
Joule's paddle wheel experiment: temperature increase of water
- lalahelp
- · Replies 19 ·
Work Done By Stretching a Steel Wire
- ehralley
- · Replies 1 ·
Elastic Problem. Aluminum Wire in Horizontal Circle
- XwyhyX
- · Replies 2 ·
Gravitational force of the Sun and Earth
- tfugger
- · Replies 2 ·
Solving Resonance: Find 1st Resonance Position in 0.931m Tube
- needhelpwith1
- · Replies 1 ·
What Is the Diffusion Coefficient of Odour Molecules?
- HelpaSista
- · Replies 1 ·
Calculating Half-Life: When 131I Will Remain in Body at 1% Level
- HugoPang1
- · Replies 2 ·
Cooling of a sphere by radiation
- fluidistic
- · Replies 5 ·
Calculating the work done moving a charge in a magnetic field
- Okarin
- · Replies 2 ·
Question involving resistance and heat transfer
- pc2-brazil
- · Replies 6 ·
The potential energy function of a particle moving in one-dimension is
- pittuniv
- · Replies 2 ·
Which cools faster: adding milk immediately or after 3 minutes?
- berko1
- · Replies 6 ·
How Do You Calculate the Force Affecting Pressure in a Viscosity Experiment?
- jamesyboy1990
- · Replies 5 ·
Oscillations Car carrying four people find how much body rises
- GingerBread27
- · Replies 3 ·
Silly work done on a car question.
- MarcZZ
- · Replies 6 ·
Simple Harmonic Motion with Cylinder Attached to Spring
- DoTell
- · Replies 2 ·
What Is the Magnitude and Direction of Eduardo's Displacement?
- maxtheminawes
- · Replies 1 ·
Lorentz Transformation with Two Moving Frames
- trevor51590
- · Replies 1 ·
Pressure at 850 m depth in seawater relative to surface
- jer_hall99
- · Replies 3 ·
Tsunami word problem (waves practice)
- cmorissette
- · Replies 1 ·
Find the electric field a distance z from the centre of spherical
- skanda9051
- · Replies 1 ·
Finding the pressure of water when given an area and depth only
- murdrobe
- · Replies 19 ·
A fish directly beneath the surface of a lake sees a fly
- GreenPrint
- · Replies 1 ·
What is the final velocity of the ball?
- rzlblrt417
- · Replies 12 ·
Theory Question - Uniform Circular Motion
- tahayassen
- · Replies 27 ·
Stefan-Boltzmann's law, atmosphere
- fluidistic
- · Replies 4 ·
Tennis ball crossbow calculations
- Runaway
- · Replies 6 ·
Verifying Physics Calcs for 25k RPM Motor/Flywheel
- jumi
- · Replies 5 ·
How do I simplify Boolean simplification ABC + AB' . ( A' C') + A'BC?
- adnankhuram
- · Replies 3 ·
Center of mass for a function defined body
- Redoctober
- · Replies 3 ·
What Is the Camper's Displacement?
- maxtheminawes
- · Replies 4 ·
Cube sliding down circular path on moving block
- x93
- · Replies 1 ·
Quantum Physics Definition of Vibration for Abstract Art Research
- summerrain
- · Replies 2 ·
SHM time calculation with amplitude and cosine equation
- Eats Dirt
- · Replies 1 ·
Rod against wall with hanging sign: tension and normal force
- chexmix08
- · Replies 11 ·
How stirring a liquid affects temperature measurements.
- dJordiB
- · Replies 2 ·
Friction force direction question
- SidewaysA
- · Replies 8 ·
Projectile Motion (Guy commiting suicide)
- maxtheminawes
- · Replies 1 ·
Simple Harmonic Motion - Mass and massive spring
- DaviBones
- · Replies 3 ·
Why does acceleration use opposite sine/cosine components than velocity in SHM?
- logearav
- · Replies 14 ·
How Does Constant Jerk Affect Projectile Motion in an Alternate Universe?
- GreenPrint
- · Replies 2 ·
Do a 2.2 eV photon and electron have the same mass, speed, and momentum?
- WeeBey
- · Replies 8 ·
When Should You Add Milk to Coffee for Optimal Temperature at Drinking Time?
- karkas
- · Replies 5 ·
Kinetic / Potential Energy Problem
- x93
- · Replies 4 ·
Electrostatics [Electric Field]
- format1998
- · Replies 2 ·
Center of mass of a two rod system
- schaafde
- · Replies 1 ·
Barrel of Fun Carnival Ride, and the relationship between Friction and ω
- bac2789
- · Replies 1 ·
How Does Wind Affect a Plane's Velocity?
- vaironl
- · Replies 3 ·
Where is the Center of Mass Located in a System of Two Unequal Rods?
- schaafde
- · Replies 1 ·
Calculating Revolutions in 1.0 s with Given Tension and Moment of Inertia
- Miike012
- · Replies 1 ·
What is the unknown force F that acted on the 20kg box in this scenario?
- Zula110100100
- · Replies 12 ·
Rotation between meter stick and a can
- Smartguy94
- · Replies 6 ·
Force exerted by jumping click beetle using Newton's second law
- Mspang22
- · Replies 1 ·
1 litre tank water sealed does steam pressure rise linear or exponential?
- daveyjones97
- · Replies 2 ·
Quantum Mechanics, Schrodinger equations and energy eigenvalues
- Badger01
- · Replies 1 ·
Moment of inertia for a thin rod
- mseeberger
- · Replies 1 ·
A 2.0 kg block is released from rest on a frictionless 30 degree incline.
- joanneleeee
- · Replies 2 ·