Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Harmonic motion of a box of mass
- sydboydell31
- · Replies 6 ·
Diffraction of light question - How do I approach this?
- Micky76
- · Replies 3 ·
Redistribution of charge in a capacitor
- ehabmozart
- · Replies 40 ·
Electromagnetism question involving two stationary conductors and crossbars
- mrcheeses
- · Replies 16 ·
Non uniform charge density and electric potential
- usfelectrical
- · Replies 9 ·
Understanding Polarization: Solving a Problem with the Law of Malus
- muirontriton
- · Replies 4 ·
Cant understand this terminal voltage question
- nishantve1
- · Replies 3 ·
Direct central impact occurs between a 300N body moving to
- manal950
- · Replies 2 ·
What is a Resistor & What Does it Do?
- supernova1203
- · Replies 6 ·
Energy Transfer in Clocks: Kinetic to Gravitational & Elastic Potential Energy
- Ryanzmw
- · Replies 4 ·
What Are the Best Electricity and Magnetism Textbooks with Detailed Solutions?
- mrshappy0
- · Replies 5 ·
How Much Charge Does a 3cm Section of a Charged Line Hold?
- sckeen1988
- · Replies 3 ·
An elevator Physics Accelerating Frame
- kerimabdullah
- · Replies 10 ·
Heat exchanged between two gases
- Metaleer
- · Replies 13 ·
Power Loss over 1st Light Bulb in DC Circuit w/10Ω, 12Ω, 10Ω & 12V
- lofty28
- · Replies 1 ·
Relavtivity Question - Unit Needed
- TheController
- · Replies 1 ·
Calculating Net Electric Flux through Submarine Hull: E&M Homework Question
- JustHere155
- · Replies 1 ·
Prove that Vmax = (pi/2)*Vavg (SHM)
- MrMaterial
- · Replies 3 ·
Solve the Equilibrium of a Light Elastic String with Mass m
- aurao2003
- · Replies 1 ·
Speed, Acceleration and Time - SUVAT Equations and Speed Time Graph
- mm391
- · Replies 5 ·
Acceleration of gravity NOT ON EARTH
- Justhelp
- · Replies 22 ·
Falling air resistance, determining g
- zaal
- · Replies 4 ·
Need help with an electromagnetic induction problem concerning two rods
- throneoo
- · Replies 9 ·
Physics Kinematics Question (Check my work?)
- varyvod001
- · Replies 2 ·
How Does Induced EMF Affect the Polarity of a Spinning Bicycle Wheel?
- ehabmozart
- · Replies 3 ·
A funny car accelerates from rest
- wbetting
- · Replies 9 ·
Relationship between resistivity and Mathiessen's Rule
- Lindoc
- · Replies 1 ·
Quotable literature electric field at wire tips?
- JoaMei
- · Replies 2 ·
Momentum and Spring Compression
- Zaft3
- · Replies 2 ·
Angular acceleration direction, rotating rigid bodies
- binbagsss
- · Replies 8 ·
How Is EMF Induced in a Spinning Bicycle Wheel in a Magnetic Field?
- ehabmozart
- · Replies 13 ·
Vector Subtraction: A^{→} - B^{→}
- defiledxhalo
- · Replies 1 ·
Mastering Projectile Motion: Tips and Examples for Solving Problems
- Thakur
- · Replies 1 ·
Projectile Motion Experiment: Proving a Pellet Can Hit a Doll at High Speed
- litheira
- · Replies 12 ·
What is its velocity equal to zero?
- saalrom
- · Replies 5 ·
Various RLC Circuit Problems (Resonance Frequency, Phase, Current)
- Spaghetti
- · Replies 2 ·
Relationships (Velocity and momentum)
- Nitrate
- · Replies 2 ·
Electromagnetic waves waves review
- Color_of_Cyan
- · Replies 2 ·
How Much Force Is Needed to Prevent the Smaller Block from Falling?
- shellshock92
- · Replies 6 ·
Need help with Projectile Motion Questions
- lilmase
- · Replies 3 ·
Why a two-slit experiment with electrons is evidence electrons are waves?
- nukeman
- · Replies 3 ·
Change in energy between system of point charges
- z0k
- · Replies 3 ·
Determining the speed of a mass attached to a spring when stretched
- Vegeance
- · Replies 1 ·
Annihilation of electron and positron
- ehabmozart
- · Replies 2 ·
Is ∆E = q always true at constant volume?
- tdod
- · Replies 7 ·
Spherically Symmetric charge distribution
- TheWire247
- · Replies 1 ·
Bead on a hoop+accelerating elevator
- PhMichael
- · Replies 8 ·
B field intensity of 2 parallel wires
- arl146
- · Replies 1 ·
Calculating Wavelength and Identifying Color Using Young's Apparatus
- wow22
- · Replies 2 ·
Relativity: Proper time and length
- sydboydell31
- · Replies 1 ·
Power/Work-Energy HW: Find Tension in Ski Boat Tow Rope
- Parzival
- · Replies 11 ·
Circuits with Series and Parallel Wiring
- Snape1830
- · Replies 35 ·
Mechanics - Pulley system finding coefficient of friction
- Roaku
- · Replies 4 ·
Catapult/Projectile Launcher Project - In Depth, Fairly Complicated - I'm stuck.
- Zealot644
- · Replies 2 ·
Elevator decelerating down vs accelerating up
- Ralph777
- · Replies 4 ·
How is weight measured in an accelerating elevator?
- ProPM
- · Replies 10 ·
Ground State Energy for infinte potential well
- Ryomega
- · Replies 5 ·
Calculating Post-Collision Speeds: 12kg & 7kg Balls
- Physicphillic
- · Replies 1 ·
Mixed parallel & series RLC circuit
- mrmlica
- · Replies 3 ·
Statistical Physics: very large and very small numbers
- PhysicsGirl90
- · Replies 6 ·
What are the equations of motion for a rotating disc on a fixed axis?
- binbagsss
- · Replies 1 ·
Explain why x-rays source are protons which are accelerated
- thisischris
- · Replies 1 ·
RL circuit time constant question
- supra_tt
- · Replies 3 ·
Inducing an EMF in an Aluminum Ring
- Color_of_Cyan
- · Replies 6 ·
Solving 2 Questions on Circuit Analysis: PD Across 3 Ohm & EMF of Batteries
- aznking1
- · Replies 2 ·
Tension in a string simple pendulum
- aurao2003
- · Replies 3 ·
Electrostats, Electric potential question. Need a little direction.
- PrashntS
- · Replies 14 ·
Understanding Circular Motion and Centripetal Force
- aurao2003
- · Replies 4 ·
Uniform Circular Motion Homework: Maximum Speed and Tension Calculation
- aurao2003
- · Replies 8 ·
How to show that light travels through space, but not time
- relativ
- · Replies 2 ·
Multiloop circuit: find equivalent resistance
- sonic91
- · Replies 4 ·
Frequency of a falling persons scream
- IanIanIan
- · Replies 7 ·
Electric Potential of 2 Point Charges
- vforvirginia
- · Replies 1 ·
Theory behind the singing wine glass
- djinn_Aria
- · Replies 4 ·
Work and Energy Conservation, Need
- BryceHarper
- · Replies 5 ·
Vector Problem Homework: Finding Cyclist B's Route to Campground
- theintarnets
- · Replies 1 ·
Optics, Telescope magnification, missing data?
- Cruikshank
- · Replies 2 ·
Explain how condersor microphone operates
- thisischris
- · Replies 1 ·
Current through resistors in circuit with TWO ideal emfs
- kevlar94
- · Replies 9 ·
Calculating Polly's Flight Speed and Sound Power for Breaking Glass
- sydboydell31
- · Replies 1 ·
How to find when the voltage gets zeroed
- Distance
- · Replies 9 ·
What is the relationship between angular momentum and angular velocity?
- sydboydell31
- · Replies 2 ·
Corresponding Energy Levels for Normalised Eigenfunctions
- Ryomega
- · Replies 2 ·
Calculating Resistor Size for Time Delay in Alarm Circuit
- ehabmozart
- · Replies 1 ·
Two objects colliding and dropping at different distances
- thisischris
- · Replies 1 ·
Electric field strength of van de graff generator
- thisischris
- · Replies 2 ·
Question regarding kinematics : motion in one dimension.
- sankalpmittal
- · Replies 9 ·
Friction with induced coil and magnetic force
- IIK*JII
- · Replies 5 ·
Convection over plate (top and bottom)
- jofree87
- · Replies 1 ·
A boy that jumps off a skate, v of the skate=?
- frank1
- · Replies 3 ·
Why is the resultant electric field pointed like this?
- curiousjoe94
- · Replies 2 ·
Is Electric Potential Highest Between Two Positive Point Charges?
- curiousjoe94
- · Replies 4 ·
How does induction affect charge transfer in a circuit with three large plates?
- thunderhadron
- · Replies 6 ·
How Fast Must a Car Drive to Avoid Slipping on the Wall of Death?
- ehabmozart
- · Replies 3 ·
MCQ: Ideal Gas Flow Out of Balloon with Temp Increase
- kalupahana
- · Replies 1 ·
Problem with center of mass exercise
- DDarthVader
- · Replies 23 ·
Electromagnet project - questions
- jacobcampbell
- · Replies 2 ·
Kinematics Equation Help: Calculating Runner's Acceleration for 10,000m Run
- NRasmus1
- · Replies 2 ·
Velocity of a box going up an inclined plane.
- Berean7
- · Replies 4 ·
The dimensions of something please
- help1please
- · Replies 16 ·