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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Solving a Vertical Winch System
- 33639
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Radius of Curvature, Lenses, Finding Di
- PeachBanana
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Will Ice Cream Land on Physics Professor's Head?
- gothloli
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Golf Balls and differential equations
- Hercuflea
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Equal centripetal and tangential accelerations
- phy11492
- · Replies 1 ·
How Do Batteries and Capacitors Interact During Charging?
- schaefera
- · Replies 9 ·
[EE] Figuring out the E and B fields from two dipoles
- Ran4
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Rockets and accleration with kinematics
- Watthelol
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Trunk dragged up 20° ramp with force at 30° angle
- Lolagoeslala
- · Replies 20 ·
Work done by force with cubic position function
- NasuSama
- · Replies 6 ·
Spherically symmetric charge density given electric potential
- stauber28
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What was the plane's landing speed?
- tworley1977
- · Replies 7 ·
Force between Two Current-Carrying Wires
- Peter G.
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Where does an electron emit or absorb radiation
- DODGEVIPER13
- · Replies 7 ·
Finding tension of 2 wires at different angles
- rollad
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Kinematics - getting different answers when using different units
- shwatwat
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Need to find the distance for the physics problem.
- NasuSama
- · Replies 9 ·
How object distance varies with distance(depth)?
- NANDHU001
- · Replies 7 ·
How to deal with vectors (Motion in two dimension)
- RuthlessTB
- · Replies 5 ·
How to find the net force, acceleration, and speed of Hovercraft?
- turtle4yj
- · Replies 4 ·
Mr. H Falls from the Top of a Climbing Wall
- turtle4yj
- · Replies 2 ·
Help with lever equilibrium problem
- Girn
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How High Does Henry Bounce on the Trampoline?
- MarkB4077
- · Replies 5 ·
Where Do Two Bouncing Balls Meet?
- pmd28
- · Replies 3 ·
Rolling motion with mass attached to the rim
- kushan
- · Replies 18 ·
Car going up a hill. Find the Angle of the hill.
- pmd28
- · Replies 45 ·
Given vi and a(v) calculate 1. v(t) 2. time to stop 3. distance to top
- IvyCap
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A person slides downa spherical, frictionless surface.
- pmd28
- · Replies 19 ·
Calculating Acceleration in a Wedge-Block System on a Frictionless Table
- oldspice1212
- · Replies 6 ·
Uniformly Charged Circular Disk
- cheungw
- · Replies 2 ·
Work done by gravity and air resistance on a falling raindrop
- AryRezvani
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Calculating Bounce Height Using Conservation of Energy
- NasuSama
- · Replies 9 ·
Force of kinesin molecule within cells
- omc1
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Finding work done by friction on a pulled sled
- NasuSama
- · Replies 6 ·
Why Is My Acceleration Calculation Not Matching the Expected Result?
- Bashyboy
- · Replies 8 ·
Equivalent Voltage for Thevenin Equivalent Circuit
- Kurushimi
- · Replies 1 ·
How Do Magnetic Forces Between Parallel Current-Carrying Wires Impact Wire I1?
- darwin59
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Sandbag Dropped from Moving Balloon
- Lycouras
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Force on a Wire In Uniform Magnetic Field
- bmb2009
- · Replies 4 ·
Tension Problem, with slope and 2 masses
- thoradicus
- · Replies 5 ·
Find the force needed to move the elephant
- BoJunior
- · Replies 3 ·
Distance, Acceleration and Time Question
- student34
- · Replies 2 ·
Rocket thrust and exit diameter with nitrogen at M=3.0, 5.0, 7.0
- strine07
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Finding the acceleration in a gear rotating and constrained by a link.
- theBEAST
- · Replies 6 ·
Free fall lab: why average velocity doesn't match g and acceleration varies
- seallen
- · Replies 6 ·
Which vectors are collinear with S30W and perpendicular to E20S?
- Vroc
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Pick-up truck braking distance on dry and wet concrete
- tratata
- · Replies 7 ·
Force exerted by tractor towing 3700-kg trailer up 18° incline
- AstoAerial
- · Replies 6 ·
Collision between two moving blocks with a spring
- Tadams92
- · Replies 2 ·
Calculating Net Force for a Viper Accelerating at 45 km/hr in 2 seconds
- socialfox
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Statement about ball thrown upwards
- chewchun
- · Replies 7 ·
Centripetal Motion along the horizontal with an angle
- mpmor1
- · Replies 14 ·
Diagonal resistor in parallel circuit
- Parad0x88
- · Replies 6 ·
Why is the normal force on a roller coaster's peak greater than mg?
- Smileyxx
- · Replies 4 ·
Helicopter Flight and Jet Pack Adventure
- oldspice1212
- · Replies 15 ·
Finding Resistance from internal resistance and Power in a circuit
- MasterVivi
- · Replies 5 ·
WOrk done by a variable force (in two dimension)
- daivinhtran
- · Replies 5 ·
Sign of ey term in electron Lorentz force calculation
- Roodles01
- · Replies 3 ·
How Fast is the Other Car Going Relative to You?
- Hannah1
- · Replies 7 ·
Deriving Kinetic Energy in a U-Tube with Varying Cross-Sectional Area
- RockenNS42
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Why is Fe/Fw = 0.12/0.43 in charged sphere equilibrium?
- yudi
- · Replies 5 ·
How Much Energy Can We Obtain from 211g of Peanuts?
- Hannah1
- · Replies 4 ·
Atomic Energy Levels - Calculating the Minimum Energy of Light Emitted
- LovePhys
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Cylinder floating at interface between two liquids
- amw2829
- · Replies 20 ·
How Do Friction and Surface Affect Block Acceleration in a Pulley System?
- joel amos
- · Replies 6 ·
Super fun projectile motion ski slope problem
- Peppo
- · Replies 1 ·
Structural Mechanics - Statics / Truss
- physicx_1
- · Replies 1 ·
The Physics Behind a Bullet Hitting The Human Body
- MG5
- · Replies 3 ·
Wordy Physics on Forces, Pulleys, and Friction
- capn awesome
- · Replies 5 ·
Calculating heat transfer and thermal expansion of an aluminium plate in water
- Sl1ver
- · Replies 3 ·
Using steam tables to find boiling point, pressure and enthalpy
- Sl1ver
- · Replies 2 ·
Finding speed of sound altitude for skydiver Felix with air resistance
- najat
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Gravitational acceleration of a satellite above Earth
- christina007
- · Replies 8 ·
What Is the Instantaneous Axis of Rotation for a Pure Rolling Disc?
- kushan
- · Replies 18 ·
Calculating Static Friction Coefficient w/ Angle of Uniform Slip
- tratata
- · Replies 2 ·
Finding acceleration of a box with two forces acting on it
- mikky05v
- · Replies 1 ·
FreeFall motion Assumptions in proving
- nabet94
- · Replies 10 ·
I'm LOST Car is suppose to overtake truck but at what velocity?
- nabet94
- · Replies 4 ·
How Do You Calculate the Mass of a Chair from Force and Acceleration?
- koolaid123
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How Is the Center of Mass Calculated for a Solid Cone?
- Carnivroar
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Ski Jump (Conservation of Energy)
- Albeaver89
- · Replies 5 ·
Maximum flow velocity for laminar flow in a pipe
- flash_659
- · Replies 2 ·
How Is the Electric Field Calculated at the Third Vertex of a Triangle?
- skg94
- · Replies 2 ·
Why Is the Tension in a High Wire Much Greater Than the Performer's Weight?
- vysero
- · Replies 1 ·
Work done by variable force F(x) = 15000 + 10000x - 25000x²
- Burnenator
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Box sliding on 35 degree grade
- joel amos
- · Replies 5 ·
Conservation of Momentum of a shot bullet
- Kennedy111
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Magnitude of Acceleration and Work
- scotthyppo
- · Replies 16 ·
What Goes on the X-Axis and Y-Axis in a Centripetal Force vs Period Graph?
- ahhppull
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Find the Initial and Final states of an excited Hydrogen Atom
- Mrbilly
- · Replies 1 ·
Einstein's energy mass relation
- Hannah1
- · Replies 2 ·
Natural force down incline plane
- PhizKid
- · Replies 12 ·
How Do You Calculate the Momentum of a Moving Car?
- Hannah1
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What is the Momentum of a 75 kg Freshman Moving Southward at 3m/s?
- Hannah1
- · Replies 2 ·
AM (SSB-SC) Signal Bandwidth 941 kHz 20 Hz-19 kHz
- qduy
- · Replies 6 ·
What Are the Correct Units for Momentum?
- Hannah1
- · Replies 2 ·
Rolling Object, Moving Incline
- BryMan92
- · Replies 2 ·
Capital Punishment @ the Dark Ages Penitentiary.
- Hannah1
- · Replies 2 ·
Momentum of a Ball tossd in the air.
- Hannah1
- · Replies 2 ·
Change in Momentum: Truck v Volkswagen
- Hannah1
- · Replies 1 ·