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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Brightness of Light Bulbs Ranking Task
- seto6
- · Replies 3 ·
How Is Torque Calculated in a Circular Coil within a Magnetic Field?
- dgresch
- · Replies 1 ·
Calculating power give mass, time, distance
- Verloren
- · Replies 1 ·
Ball bounce timing, gun barrel length, and bird wing velocity
- Clari
- · Replies 7 ·
Force between two metal spheres after electron transfer
- dgresch
- · Replies 2 ·
Dynamic Analysis of Motion - Biomechanics
- kreuzberg
- · Replies 1 ·
Why isn't the 20k resistor used in the RC time constant?
- thomas49th
- · Replies 7 ·
What is the Magnitude of Acceleration for Point B in a Moving Piston System?
- Clancy
- · Replies 1 ·
Particle Rotation: Solving for X Coordinate at a Given Time
- chiwen1
- · Replies 1 ·
Maximum Distance of Package on Incline with Friction
- Shhtory
- · Replies 6 ·
How Do You Calculate the Moment of Inertia for a Disk Rotated Off-Center?
- Sweeney91
- · Replies 1 ·
Invisibility Cloaks: Understand How They Work
- bassim22
- · Replies 2 ·
Addition of 3d force vectors to find resultant
- TW Cantor
- · Replies 9 ·
How Is Path Length Difference Calculated in a Two-Slit Interference Pattern?
- msusparty1136
- · Replies 1 ·
Error in my units, and I don't understand why
- warfreak131
- · Replies 8 ·
Central Diffraction Maximum Double Slit
- jegues
- · Replies 11 ·
Calculating disintegration energies of alpha emmision.
- Finaid
- · Replies 6 ·
Ball bouncing off ground at different angles
- affordable
- · Replies 1 ·
Rotational Motion: Stop a 10 kg Disk in 20 sec
- pradeepk
- · Replies 3 ·
Projectile motion of home run ball
- mlbuxbaum
- · Replies 25 ·
Specific Heat Capacity and final temperature
- David7812
- · Replies 5 ·
Final temperature when tea and copper cup reach thermal equilibrium
- 47Alexander
- · Replies 2 ·
Loop-de-loop work energy problem
- dorkymichelle
- · Replies 1 ·
How Does SHM Affect Apparent Weight on a Fish Scale in Water Waves?
- physicsnewb12
- · Replies 1 ·
Problem concerning zoom lens in camera
- TottsieS
- · Replies 1 ·
Electric circuit, drift velocity, battery
- edington
- · Replies 1 ·
Eddy Current in a rotationg disk
- Delzac
- · Replies 1 ·
Galvanometer to ammeter/voltmeter
- Dr. Science
- · Replies 5 ·
What is the closest object that can be seen clearly with corrective glasses?
- EKL622
- · Replies 1 ·
Object being launched into space
- aeromat
- · Replies 2 ·
Equivalent Capacitance or Resistance and Kirchoff's rules
- lookingforhlp
- · Replies 10 ·
Work required to lift object from earth's surface to circular orbit
- aeromat
- · Replies 3 ·
Current source = Total current?
- gabjew90
- · Replies 3 ·
Finding emf of battery in circuit with given current
- DrMcDreamy
- · Replies 4 ·
Surface charge, electric fields, and capacitance
- lookingforhlp
- · Replies 1 ·
Completing the Square, Quad form
- DiomondJim
- · Replies 1 ·
Mass added to a spring to increase period of oscillation
- jomha
- · Replies 2 ·
A pipe, a string, and resonance
- alexfloo
- · Replies 2 ·
How are Electromagnetic Waves Produced?
- kripkrip420
- · Replies 9 ·
Torque Calc: Find Torque from Force F, Vector r
- gvcalamike
- · Replies 2 ·
Anglar motion, where do i start
- jsm6252
- · Replies 2 ·
Features of series and parallel combination of resistors
- agnibho
- · Replies 1 ·
Uncertainty in pulley experiment efficiency measurement
- Peter G.
- · Replies 2 ·
Angular Momentum and Angular kinetic energy about the center of the sun.
- Wasseem92
- · Replies 1 ·
Bike and Car both accelerate from rest ( intermediate problem)
- Color_of_Cyan
- · Replies 1 ·
Spring mass system and Simple harmonic motion
- physicsnewb12
- · Replies 4 ·
Obtain the voltage of the generator and the phase angle
- cclement524
- · Replies 2 ·
Optics problem, adding quantities
- thezac11
- · Replies 1 ·
Damped Harmonic Oscillation Problem
- Chip90
- · Replies 14 ·
How does a rigid block on its edge move?
- tmiddlet
- · Replies 5 ·
Fast quick Energy Conservation Question
- godkills
- · Replies 2 ·
How does the mass of the barbell affect the centre of gravity?
- bigsaucy
- · Replies 10 ·
Thin Film interference: air wedge
- Abelard
- · Replies 4 ·
Calculating pressure of cylinder on table
- tehmatriks
- · Replies 3 ·
Why Is My Calculated Torque Different from the Textbook's Answer?
- bigsaucy
- · Replies 5 ·
What is the Charge on the Capacitor in a Circuit After Switching Positions?
- etown
- · Replies 2 ·
Time for jets to stop space capsule rotating at 30 rev/min
- IWuvTeTwis
- · Replies 1 ·
Solve 8526 N Weight Acceleration Problem at 5° Angle
- ryanbe
- · Replies 3 ·
Applying Newton's laws to four fluid mechanics problems
- AttilaTheNun
- · Replies 4 ·
Solved: Wavelength of Scattered Light After Photon-Electron Collision
- Allan1993
- · Replies 1 ·
Finding satellite period orbiting Earth given distance and mass
- teggenspiller
- · Replies 15 ·
Calculating Net Torque on a Circle: 4.0cm Diameter, 20N and 30N Forces
- bigsaucy
- · Replies 4 ·
Solving a Virtual Image Problem Involving a Converging Lens
- lpau001
- · Replies 1 ·
Conceptual Question [Newtons Laws]
- iRamie
- · Replies 3 ·
Magnetic field from two wires distance
- fisixC
- · Replies 25 ·
Deriving Energy and Wave Functions from 3D Schrödinger
- erok81
- · Replies 1 ·
Initial vs. Final velocity of projectile with no net displacement
- PhysicsAdvice
- · Replies 4 ·
Force between two point charges
- etown
- · Replies 2 ·
The potential energy of two atoms-
- noleguy33
- · Replies 1 ·
How can the vertex be found in a parabolic curve equation?
- karmatic
- · Replies 1 ·
Torque, Rotation, Pulley problem
- cdbowman42
- · Replies 8 ·
What is the equivalent resistance between points a and b in the figure
- smoics
- · Replies 6 ·
Wave Speed Dependency on Distance from Top of Hanging Rope
- BryMan92
- · Replies 4 ·
Resistors and currents-circuits
- smoics
- · Replies 3 ·
How to Calculate the Specific Heat Capacity of an Unknown Metal
- Verbally
- · Replies 4 ·
Loop, compass and magnetic field
- Mantaray
- · Replies 2 ·
Given the rest energy need to convert into MeV
- mattiee102
- · Replies 1 ·
How Does Friction Affect Spring Compression and Energy Loss?
- becksftw
- · Replies 4 ·
Rain falling at 1 m/s, man running at 5 m/s: umbrella angle?
- AlchemistK
- · Replies 1 ·
Electrostatic Potential of a Charged Metallic Shell
- newyorkcity
- · Replies 1 ·
Hydrogen Atom -> Uncertainty Principle
- btbam91
- · Replies 2 ·
What Angle to Tilt a Cylindrical Tank to Double Water Flow from a Hose?
- vivekrai
- · Replies 6 ·
Impedance in an electric Circuit
- wheybags
- · Replies 6 ·
Moment of inertia for compound pendulum with rod and disc
- Idividebyzero
- · Replies 30 ·
How Many Turns Are Needed for a Solenoid with Given Parameters?
- fisixC
- · Replies 2 ·
Why are they using a rectangle for Guass's Law?
- flyingpig
- · Replies 3 ·
Some theories concerning potential difference
- flyingpig
- · Replies 12 ·
Find initial velocity given angle and distance to go over an object
- jarn6700
- · Replies 15 ·
Solving Uni Physics with Projectile Motion
- Stephen1993
- · Replies 3 ·
Nodal Analysis with power supplied to capacitor
- eatamon
- · Replies 8 ·
Simple Pulley Problem: Energy Methods and Coefficient of Friction Explained
- Exuro89
- · Replies 6 ·
What does local form mean in Gauss' law for magnetism?
- catmunch
- · Replies 1 ·
Momentum problem of blocks and bullet
- dorkymichelle
- · Replies 6 ·
Electric field at perpendicular distance R due to a Solenoid
- ElijahRockers
- · Replies 1 ·
Motorcycle Wheels: Calculating Horizontal Acceleration for Front Wheel Lift Off
- pradeepk
- · Replies 1 ·
Force and Motion Homework: Draw Free Body Diagram & Compare Fnorm to Fgrav
- AnomalyCoder
- · Replies 3 ·
Why is E-field 0 outside of this sphere?
- flyingpig
- · Replies 2 ·
Tension vector diagram [Probably obvious]
- Rappelle
- · Replies 3 ·
Why is there no current in the right loop of this circuit?
- flyingpig
- · Replies 2 ·
Thermodynamics - internal energy change question
- chriswilson
- · Replies 2 ·