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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When Calculating Torque, When to Use Cos and Sin?
- SpringWater
- · Replies 2 ·
Stopping distance formula with friction and grade
- NewDarkAge
- · Replies 2 ·
First Year Physics Exam Prep: Challenging Problems Across Multiple Topics
- Obi-2-Kenobi
- · Replies 1 ·
Hydromechanics - Flow from a tank with one outflow
- Maag
- · Replies 2 ·
How Is the General Equation for Center of Mass Derived?
- zacky_D
- · Replies 6 ·
How Do You Calculate Tension in a Pulley System with Two Masses?
- tsurugi-ijin
- · Replies 1 ·
Compute the total power delivered to the circuit by two batteries
- brittydagal
- · Replies 5 ·
Tension in vertical circular motion
- joel amos
- · Replies 15 ·
Finding the Axis of Rotation in a Rotational Dynamics Problem
- thunderhadron
- · Replies 1 ·
Instantaneous Center of Zero Velocity for a Yo-Yo Unravelling
- theBEAST
- · Replies 1 ·
Acceleration given Earth's radius
- joel amos
- · Replies 18 ·
A thin uniform bar, hanging, is hit by a ball. Find the angular velocity
- Phys121VIU
- · Replies 3 ·
How long to fill a 24L container with a garden hose at 2.72 m/s?
- Alex Wiseman
- · Replies 6 ·
Finding the time in which a potential drop is equal to 3V
- grace85233
- · Replies 8 ·
Acceleration of Space ship with thrust
- mtv
- · Replies 1 ·
Most probable values of the Maxwell Boltzman distribution
- Trivial Man
- · Replies 1 ·
Coefficient of Linear Expansion
- Sonek
- · Replies 7 ·
Period of a Physical Pendulum: Finding T for a Uniform Disk
- yaylee
- · Replies 1 ·
Simple magnetic field circular motion problem
- letsgo
- · Replies 3 ·
Oscillation above the Surface of the Earth
- yaylee
- · Replies 3 ·
Dielectric constant is throwing me off
- Ahmed.Sandman
- · Replies 1 ·
Positioning a Counterweight for Heavy Crane Lifting
- SherlockOhms
- · Replies 3 ·
Work and electric potential in a moving charge
- Caterr
- · Replies 3 ·
What Is the Velocity of a Mass on a Spring When Displacement Is 3.6 cm?
- DLH112
- · Replies 2 ·
Energy (Potential) and Oscillation Problem
- yaylee
- · Replies 2 ·
Ladder leaning against wall tipping when person climbs
- dolpho
- · Replies 6 ·
Finding charge and voltage in a capacitor network with 3µF, 6µF, 2µF, 4µF capacitors
- brittydagal
- · Replies 6 ·
Find all branch currents in the network shown.
- s3a
- · Replies 8 ·
Solving for time with these variables
- JazzMasterKC
- · Replies 2 ·
Question on waves where a rope attached to ceiling.
- ppy
- · Replies 1 ·
Line of action from pivot to force should be zero?
- johnnyboy53
- · Replies 1 ·
Find the electric force on the proton
- warnexus
- · Replies 3 ·
Can you me with this thevenin problem ?
- ujnikm
- · Replies 3 ·
How Do You Balance Forces in a Charged Rhombus?
- kokoman
- · Replies 1 ·
Lorentz Transformation/converting between reference frames
- bmb2009
- · Replies 4 ·
Basic Relativity Question (Time Dilation)
- CSGuy123
- · Replies 2 ·
Motion problems: deceleration equation and velocity perpendicularity
- zacky_D
- · Replies 2 ·
Thermodynamics- Heat engine and refrigeration
- MacLaddy
- · Replies 2 ·
Hydraulic piston break system problem
- Thundagere
- · Replies 2 ·
Rotational Kinetic Energy of Big Ben
- Bashyboy
- · Replies 2 ·
Distance traveled and hang time for 2D projectile
- Kstan333
- · Replies 2 ·
Why does the pendulum and fan model the Michelson-Morley experiment?
- MarcAnthony
- · Replies 2 ·
Electron in a one-dimensional box emitting a photon
- Ezequiel
- · Replies 2 ·
Factors on which conductivity depends
- logearav
- · Replies 1 ·
Static fraction force coefficient
- elstudent
- · Replies 21 ·
Ranking springs in terms of spring constant
- Avalanche
- · Replies 5 ·
Dipole moment of polarized sphere
- SallyBieber
- · Replies 2 ·
A shaped stepladder physics problem?
- physicsmajor9
- · Replies 1 ·
Calculating wave-length using path-length difference?
- wizzpowa
- · Replies 6 ·
Coefficient of kinetic friction from photogate velocities
- rm_girl
- · Replies 15 ·
Wavelength from interference fringes between glass plates with oil
- ppy
- · Replies 5 ·
Find pressure at depth of freshwater
- cc2hende
- · Replies 3 ·
Volume Change of Nitrogen Bubbles in Divers: The Bends Phenomenon
- flip290
- · Replies 1 ·
Why does tangential velocity equal translational velocity when rolling?
- jonahsaltzman
- · Replies 2 ·
Rotation Problem Involving Two Disks
- Bashyboy
- · Replies 1 ·
Determining an equation for measuring frequency distribution of extended system
- Violagirl
- · Replies 9 ·
Elevator cable force with upward acceleration and recoil on skateboard
- Coco12
- · Replies 2 ·
Why does truck image approach at 4 m/s in mirror, not 2 m/s?
- rishch
- · Replies 6 ·
What is the Phase Angle in a Series L-C Circuit?
- MrLiou168
- · Replies 8 ·
What are the effects of energy and drag on rubber band powered boats?
- tanwan89
- · Replies 9 ·
Torque problem - Direction and Magnitude of force exerted on socket
- cdornz
- · Replies 5 ·
Egg toss design project with target for Physics 12 ISU
- MatticusjK
- · Replies 2 ·
Water flowing upward through a pipe using Bernoulli's equation
- srollin6
- · Replies 1 ·
Calculating Velocity of Object Dropped from 71.3m
- Leoragon
- · Replies 11 ·
Frequency of a spring in an extended system
- Violagirl
- · Replies 1 ·
Threshold frequency and wavelength of electrons in the photoelectric effect
- Ezequiel
- · Replies 4 ·
Initial velocity, flight time, and height for object thrown upward to 100 m
- iSaad
- · Replies 2 ·
Oscillating block on moving board with friction
- tonykoh1116
- · Replies 1 ·
Heat dissipated in an RLC circuit
- nautola
- · Replies 1 ·
Mass falls on lever, catapulting mass on other end
- SuspendedFour
- · Replies 4 ·
Multiple choice conceptual question on the photoelectric effect
- Duderonimous
- · Replies 3 ·
Inelastic Scattering of alpha particles on a target.
- jboyd2107
- · Replies 4 ·
Moon image size from a 3.6 m reflecting telescope
- Desafino
- · Replies 1 ·
Find the velocity of two carts after a head on elastic collision.
- Interception
- · Replies 2 ·
How High Did the Pole Vaulter Jump?
- dstew1019
- · Replies 1 ·
Solving Bernoulli Principle Homework: Water Flows in Pipe
- srollin6
- · Replies 1 ·
If I push against nothing, what exerts the reaction force on me?
- sgstudent
- · Replies 10 ·
Movement of 2 particles Described by vectors
- LinearMan
- · Replies 3 ·
Determining Bond Length with Wavelengths
- PeachBanana
- · Replies 1 ·
Integrating a Uniform Magnetic Field: Solving for ∫Bdl
- Mdhiggenz
- · Replies 4 ·
Heat of mixture of two substances (no state changes)
- Esoremada
- · Replies 4 ·
Maximum horizontal force F on ramp with friction?
- PhoniexGuy
- · Replies 24 ·
Finding conservation of energy through Newton's Law.
- D3xus
- · Replies 3 ·
Weight Away from Earth's Surface [CONCEPT-NO MATH]
- SigFig
- · Replies 1 ·
Tricky collision problem but looks simple
- johns123
- · Replies 8 ·
How many grains of sand are on Earth?
- Negi Magi
- · Replies 7 ·
Damped oscillation with sinusoidal driving force and LC circuit resonance
- Erbil
- · Replies 11 ·
Height of oil of above water U cylinders
- coldsteel
- · Replies 3 ·
For what slide extensions will trombone produce max sound intensity?
- ppy
- · Replies 6 ·
Calculating force from a system of connected springs
- miaou5
- · Replies 2 ·
Atmospheric pressure and the spring constant
- rasputin66
- · Replies 3 ·
Calculating Distance from Earth's Center for 1/10 Gravitational Acceleration
- mosque
- · Replies 2 ·
Rayleigh scattering causing blue skies
- sgstudent
- · Replies 1 ·
Conservation of energy question.
- peripatein
- · Replies 4 ·
Torque equilibrium and angular momentum conservation problems
- riseofphoenix
- · Replies 5 ·
Lenz Law copper tube problem modification
- Eric Wright
- · Replies 11 ·
Newton's derivation of Kepler's laws
- inkyvoyd
- · Replies 3 ·
Simple Redshift Question/Orbital Velocity
- bmb2009
- · Replies 4 ·
Stable Bonds at Room Temperature
- PeachBanana
- · Replies 1 ·
Finding sound speed on another planet from coke bottle frequency
- riseofphoenix
- · Replies 23 ·