Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Work done by magnetic force on a moving proton
- Schaus
- · Replies 6 ·
Calculating Electron Velocity in Crossed E and B Fields
- Schaus
- · Replies 5 ·
Energy conservation in superball collision
- Alettix
- · Replies 13 ·
Tension in string connecting masses on inclined plane and hanging mass
- Kernul
- · Replies 4 ·
Solve Spring Gun Problem: Recoil Speed Calculation
- Raymond Huang
- · Replies 1 ·
Where can I find a good textbook for special relativity?
- Taylor_1989
- · Replies 33 ·
How can you accurately measure the volume change of an empty juice box?
- charles bigby
- · Replies 11 ·
What is the potential of an uncharged sphere?
- Zarif
- · Replies 11 ·
Can Friction Suppress the Up and Down Movement of a Flying Disc?
- Vrbic
- · Replies 48 ·
Thin film interference: why is the thinnest film for maximum reflected light λ/2 not λ/4?
- Any Help
- · Replies 3 ·
Speed Question: Two bodies are hit/ final momentums?
- Const@ntine
- · Replies 10 ·
Determining power output at different time intervals
- cmkluza
- · Replies 4 ·
Finding the force of kinetic friction without a coefficient
- Her0
- · Replies 8 ·
Angular momentum of a bullet problem
- Ocsycleen
- · Replies 21 ·
MCAT Collisions of a wooden block and bullet
- Joseph Phan
- · Replies 5 ·
Simple Tension Exercise: Acceleration and Final Velocity Calculation
- Kernul
- · Replies 11 ·
Masses connected to spring momentum
- Raj Kishore
- · Replies 3 ·
Object is dragged across a semicircle's perimeter
- Const@ntine
- · Replies 10 ·
Finding orbital velocity of a moon 300,000 m above a planet
- physicaled
- · Replies 8 ·
Two waves of light in air travel through a layer
- Any Help
- · Replies 5 ·
Calculating Distance Traveled by Cart with Sliding Block
- Raj Kishore
- · Replies 9 ·
Why does a weighing scale read higher when a boy sits on it in a rotating carousel?
- Eitan Levy
- · Replies 21 ·
Will any charge flow through the circuit?
- donaldparida
- · Replies 36 ·
Image by Refraction through Flat Surface
- Tom MS
- · Replies 1 ·
Calculating Work in Lifting a Bucket
- Brian McKalip
- · Replies 9 ·
How to find vertical distance with antiphase waves at 180 degrees
- ravsterphysics
- · Replies 5 ·
How Do You Solve Problems Involving a Spring's Force Constant?
- Miyla
- · Replies 3 ·
Determining the total current of many batteries
- Asmaa Mohammad
- · Replies 27 ·
Harmonic oscillation in classical mechanics
- sya deela
- · Replies 3 ·
2 discs connected by spring, airborne?
- alindao
- · Replies 1 ·
Finding Vx when 2A passes through a 6Ω resistor
- Schaus
- · Replies 12 ·
The longitudinal displacement of sound wave
- Any Help
- · Replies 1 ·
Difference between a clock and a series of radar pulses
- Ken Miller
- · Replies 5 ·
Mesh analysis with dependent sources
- Cocoleia
- · Replies 4 ·
Find the final velocity of a metallic bar
- TobyRaicoon
- · Replies 1 ·
How much work does a crane and gravity do on a large box?
- Warlic
- · Replies 5 ·
What Is the Correct Water Level for the Third Resonance in a Closed-Open Tube?
- Any Help
- · Replies 3 ·
Calculating Ambulance Frequency Change: -113 Hz
- Any Help
- · Replies 2 ·
Doppler effect (source and detector moving together)
- Any Help
- · Replies 4 ·
Dirac notation Schwarz Inequality Proof
- interdinghy
- · Replies 6 ·
Charge on pith ball between two plates
- fizzicmaniac
- · Replies 2 ·
What is the relationship between power and dissipated energy in cycling?
- ZJacob
- · Replies 8 ·
Ball dropped down from 5m, what is its speed when it hits the ground
- MrGoATi
- · Replies 15 ·
Hooke's Law Second Order Differential Equation
- Kernul
- · Replies 14 ·
Understanding Net Force and Net Moment in Statics
- WesTech
- · Replies 4 ·
Momentum not consistent with definition in Landau's book?
- zhouhao
- · Replies 8 ·
Fundamental frequency of a wire wheel spoke
- Any Help
- · Replies 2 ·
Waves: fundamental frequency of taut cable
- Any Help
- · Replies 3 ·
Find magnetic flux density B circulation in closed contour
- Tegalad
- · Replies 1 ·
How Can I Build a Golf Ball Roller Coaster with Recycled Materials?
- nerds
- · Replies 3 ·
Grounded conductor and Electric field potential question ?
- Karamany
- · Replies 2 ·
Ballistic pendulum muzzle velocity equation with conservation of energy
- ujellytek
- · Replies 2 ·
How to Solve for i(t) in a Circuit with a Step Function Source and an Inductor
- Cocoleia
- · Replies 4 ·
Roller coaster physics conceptual question
- Ryan Saunders
- · Replies 1 ·
Temp. rise that will cause liquid to fill vessel completely
- King_Silver
- · Replies 1 ·
How Do Elastic Collisions Affect the Velocities and Angles of Moving Masses?
- blixel
- · Replies 28 ·
Number of modes in Cubic Cavity
- Keiner Nichts
- · Replies 2 ·
Equation of motion for a tilting stick with an off-center mass
- mathewmical
- · Replies 4 ·
Finding absolute zero from best fit lines with and without uncertainty
- PancakeSyrup
- · Replies 2 ·
Momentum and impulse of jump problem
- KevinFan
- · Replies 11 ·
Why is the final potential of spring (Usf) equal to zero in problem b?
- F1ght4h0n0uR
- · Replies 2 ·
Does a movable pulley give twice the acceleration of a fixed pulley in Atwood's machine?
- KevinFan
- · Replies 8 ·
The Sun treated as a perfect Black Body
- Keiner Nichts
- · Replies 6 ·
Total Time for Newton's Law of Gravitation
- Phys_Boi
- · Replies 13 ·
Speed of a bead at different heights with energy conservation
- Sophie Martinez
- · Replies 8 ·
Angular acceleration of cylinder rolling around another cylinder
- Happiness
- · Replies 1 ·
What is the Potential Energy of a Spring Between Two Masses?
- rakshit1992
- · Replies 3 ·
Potential energy as a form of mass?
- Vitani11
- · Replies 1 ·
Nuclear reactions, cross section, reaction rate
- Incand
- · Replies 4 ·
How long does it take for sound to travel 1 mile at a speed of 740 mph?
- thetexan
- · Replies 3 ·
Force of Gravitation and Centripetal Force
- Taniaz
- · Replies 14 ·
Point body of mass hung from a ceiling on two ropes
- Simon Akbar
- · Replies 10 ·
What distance is needed for a body to spin in circular motion with a spring?
- Eitan Levy
- · Replies 26 ·
Speed from a distance vs. time graph
- ravsterphysics
- · Replies 1 ·
Application of Gauss' law - point charge in hollow sphere
- pesslovany
- · Replies 9 ·
How could a DC electric motor be used to power a computer?
- angie19
- · Replies 9 ·
Calculating Torque in a Hanging Rod System
- Joosh
- · Replies 5 ·
How do we know if a resistor is added or subtracted?
- k_squared
- · Replies 4 ·
Deriving mgh from gravitational potential energy using binomial expansion
- Faiq
- · Replies 12 ·
A problem Simple harmonic motion
- harini07
- · Replies 2 ·
Find the height the block rises to after an elastic collision
- Neon32
- · Replies 7 ·
Problem Newtonian mechanics French
- leoleo
- · Replies 2 ·
Water level before and after metling of ice cube
- wei1006
- · Replies 4 ·
What is the static friction force acting on the object?
- unknown physicist
- · Replies 2 ·
Rotating Friction Discs For Project Design
- person123
- · Replies 9 ·
How Do You Calculate the Angular Motion of a Pulley System?
- ikihi
- · Replies 15 ·
Friction vs NonFriction problem
- SalahL
- · Replies 11 ·
Diffraction Grating Question, Dispersion and Resolving
- PhilJones
- · Replies 2 ·
How to ameliorate this Wheatstone bridge?
- JulienB
- · Replies 2 ·
Solving Oscillating Systems Homework: Angular Frequency & Velocity
- Adriano25
- · Replies 2 ·
Tension in an object moving with circular motion
- Nat Reed
- · Replies 7 ·
Does a falling mass make the spool rotate counterclockwise?
- Adriano25
- · Replies 8 ·
Magnetic field in an offset hole in a conductor cylinder
- zweebna
- · Replies 1 ·
Aeroplane follows circular trajectory-Tension? (geometry)
- Const@ntine
- · Replies 6 ·
Statics:Find the Tension in a rope holding a boom
- fishturtle1
- · Replies 4 ·
First Law of Thermodynamics issue
- ghostops
- · Replies 5 ·
Slipping transitioning to rolling without slipping
- lightofthemoon
- · Replies 6 ·
Max reaction force - ferris wheel
- krbs
- · Replies 12 ·
Showing the force on a magnetic dipole
- rebc
- · Replies 4 ·
Velocity of a satellite in a eccentric orbit
- farolero
- · Replies 5 ·