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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Lift accelerating upward with passenger on weighing scale
- Klejdi90
- · Replies 11 ·
Atwood Machine, two masses + two pulleys (w/ mass)
- destrow111
- · Replies 2 ·
Work by Gravity and Tension forces on an Incline
- vtstudent
- · Replies 3 ·
A cube of some substance floats
- cashflow
- · Replies 1 ·
Capacitor charging with unknown resistor
- cdotter
- · Replies 3 ·
Minimum force to restrain a granite cube on a 60° slope
- mj1888
- · Replies 1 ·
Which disks are in equilibrium?
- taliaroma
- · Replies 2 ·
Specific heat in izobaric process
- player1_1_1
- · Replies 3 ·
Meteorite strikes Earth; Change in rotational frequency
- pcml100
- · Replies 10 ·
Speed of 1.00-kg ball after head-on collision with 0.50-kg ball
- whoopie88
- · Replies 1 ·
Determine the NEW force of attraction between two masses
- OverAchiever
- · Replies 1 ·
Static friction in Rotational Motion
- liltony817
- · Replies 1 ·
Calculate Nitrogen Gas Density at 1.7 Atm, 332K
- LostInScience
- · Replies 9 ·
Falling Meteorite - Gravitation PE + KE
- Faint
- · Replies 9 ·
What time and at what distance do two objects meet?
- Kuroida
- · Replies 3 ·
How Does Phase Angle Affect Current in an Undriven RLC Circuit?
- brollysan
- · Replies 4 ·
Impulse of a Ball - Greatest Change in Momentum
- I Like Pi
- · Replies 3 ·
Electromagnetism and Light Questions
- appplejack
- · Replies 2 ·
How Do You Calculate Work from a Force Applied at an Angle?
- gggorillaz
- · Replies 3 ·
Roller coaster loop searching for Height
- gggorillaz
- · Replies 6 ·
Aparant size of an object based on distance from it.
- Runaway
- · Replies 1 ·
Maximum velocity for a piston in simple harmonic motion.
- Runaway
- · Replies 2 ·
Calculating the Angle of Deviation at a Glass-Air Interface
- futb0l
- · Replies 8 ·
Conservation of momentum and a uniform rod
- mmiller9913
- · Replies 4 ·
Momentum Question: Calculating Velocity on a Rolling Platform
- runningirl
- · Replies 2 ·
Momentum update with air resistance
- ohheytai
- · Replies 5 ·
Understanding the Relationship Between Satellite Properties and Orbit Radius
- dheath90
- · Replies 2 ·
Why can't force normal produce a torque?
- hellocello
- · Replies 3 ·
Can we model fictitious forces using vectors?
- flyingpig
- · Replies 3 ·
What is the electric field above an infinite plate with a given charge?
- manenbu
- · Replies 1 ·
Can a Widget Withstand Large Accelerations and Decelerations?
- 3ephemeralwnd
- · Replies 1 ·
Speed of Sound Lab (using slope to find speed of sound)
- goman519
- · Replies 2 ·
Single Slit Diffraction and Monochromatic light
- jones268
- · Replies 4 ·
If the sled pulls back on the man equally, how do they move?
- brewAP2010
- · Replies 3 ·
What is the final pressure of an adiabatically compressed gas in a container?
- de3tz
- · Replies 1 ·
How Does the Radius Affect the Magnetic Field Inside a Solenoid?
- Chip90
- · Replies 6 ·
Understand Power Loss in a Wire Through V, I and R
- kuwerty
- · Replies 2 ·
Magnetic field at the center of a cube of wires
- Schecter5150
- · Replies 5 ·
Physics underpinning Impedance Plethysmography
- Sarahf
- · Replies 1 ·
Prove a lens must always be converging if
- jones268
- · Replies 1 ·
Spring force and projectile motion in rotating system
- jcfor3ver
- · Replies 6 ·
Rigid equilibrium question involving a ladder
- LizzleBizzle
- · Replies 5 ·
Two Identical Car Accidents: Which is More Dangerous?
- mcneilmo
- · Replies 1 ·
Pendulum tension in rotating reference frame
- knightcydonia
- · Replies 4 ·
Moment of Inertia of a thin uniform wire
- kelslee28
- · Replies 7 ·
Block against a wall (friction problem)
- 3ephemeralwnd
- · Replies 3 ·
Maximum reflections in 1.0 m optical fibre with 20 μm diameter
- physicoo
- · Replies 9 ·
Angular Momentum conceptual question
- brushman
- · Replies 1 ·
What is the moment of inertia of the pendulum
- dazedy
- · Replies 1 ·
A sliding puck analyzed from an inertial reference frame
- Raziel2701
- · Replies 1 ·
Pressure, constant volume gas thermometer, and thermodynamics
- nibbles198
- · Replies 1 ·
Light bulbs in parallel and series
- meadow
- · Replies 2 ·
Finding Applied force given Mass and Kinetic and Static coefficients.
- Hieroglyphics
- · Replies 1 ·
What Color Will a 320nm Soap Film Appear in Reflected Light?
- revacious
- · Replies 9 ·
What is the acceleration and g-force of a space cannon on the moon?
- midgetwars
- · Replies 8 ·
Moment of inertia of four point masses about x, y, and z axes
- huybinhs
- · Replies 4 ·
Net torque on person about points A, B, and C
- imatreyu
- · Replies 1 ·
Two skaters pushing on frictionless ice
- runningirl
- · Replies 3 ·
Symbolic Centripetal Force Problem on WebAssign
- darthfodder
- · Replies 1 ·
Can Gauss' Law be applied to point charges on non-spherical surfaces?
- manenbu
- · Replies 2 ·
Velocity of water in a water tank
- dherr12
- · Replies 1 ·
Elastic collision between 5.0 kg and 2.0 kg balls on a track
- tica86
- · Replies 1 ·
Angular Momentum of man holding a weight
- eprparadox
- · Replies 1 ·
Dont understand physics work question?
- elpermic
- · Replies 1 ·
Static Friction of a Braking Truck
- Calam1tous
- · Replies 1 ·
Special Relativity-particle physics
- SMG75
- · Replies 1 ·
Cross Product of i x -i: Answer?
- Dudealadude
- · Replies 1 ·
Moment of intertia of thin disc
- BradP
- · Replies 10 ·
Calculating Momentum of a Puck with Given Velocity and Mass
- zaraox
- · Replies 4 ·
What Is the Phenomenon of Changing Direction Towards a Moving Target Called?
- Pawnag3
- · Replies 1 ·
Why is the flux on top and bottom of a cylinder ignored in Gauss's law?
- Acuben
- · Replies 5 ·
What is the Net Force Acting on an Object on an Inclined Plane?
- toyotadude
- · Replies 1 ·
Newtons Second Law For A System Of Particles
- richard karn
- · Replies 1 ·
Simple energy question, but getting different results with different methods
- defetey
- · Replies 2 ·
Volume of styrofoam needed to float platinum just below water surface
- HadManySons
- · Replies 4 ·
Calculating Spontaneous Fission Rate of 238U and Its Half-Life
- matt222
- · Replies 1 ·
How Far Will a Uniformly Accelerating Train Travel Before Stopping?
- Phyzics J
- · Replies 2 ·
Distance a rotating turnable moves
- preluderacer
- · Replies 5 ·
Was Either Car Speeding at the Time of the Accident?
- High_Voltage
- · Replies 1 ·
What is the acceleration of the upper block after the string breaks?
- eprparadox
- · Replies 2 ·
Two blocks connected by string over pulley with friction
- preluderacer
- · Replies 9 ·
Constant horizontal pull on a sled
- wondermoose
- · Replies 9 ·
Why Do Solid and Hollow Spheres Show Different Electric Fields Inside?
- Acuben
- · Replies 2 ·
Conservartion of Energy - spring problem
- Nynex
- · Replies 5 ·
Hot air balloon - Ideal gas law
- andyfry
- · Replies 5 ·
How to find power dissipation in combination circuit?
- boilerpilot
- · Replies 14 ·
How is the wavelength of monochromatic light measured
- franklinear
- · Replies 3 ·
Cylinder with hanging mass: torque and translational motion
- mmmboh
- · Replies 20 ·
Horizontal distance between two hot air balloons given angle of elevation
- hannah2329
- · Replies 2 ·
Resultant force on aircraft door
- Andy21
- · Replies 2 ·
Momentum problem with varying mass
- issacnewton
- · Replies 3 ·
How Is the Lowest Center of Mass Calculated for a Draining Soda Can?
- lax1113
- · Replies 15 ·
Astronomy-particle density/interior temp of sun check
- accountkiller
- · Replies 4 ·
Calculating Gas Pressure in a Piston System with Added Weight
- dragon162
- · Replies 2 ·
Truss member forces: why are BD and BA giving non-zero results?
- smashbrohamme
- · Replies 6 ·
Angular momentum of rotating disk through center vs edge
- asdf12321asdf
- · Replies 4 ·
Angular velocity of rigid body
- yetar
- · Replies 21 ·
How Can We Calculate Rollercoaster Loop Dynamics With Friction?
- igforce
- · Replies 1 ·
Cannon fired at 50° over 10 m tower, lands 300 m away
- AudioGeek
- · Replies 8 ·
Block through friction, loop-the-loop, and vertical arc launcher
- funnyguy
- · Replies 1 ·