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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Finding Total momentum of a system
- mcordi
- · Replies 2 ·
Radio wave interference with ground reflection
- cryora
- · Replies 1 ·
Does light reflect at the water-flint glass boundary?
- physicsguy101
- · Replies 2 ·
A 1600 kg object is initially at rest 400 km above the earth’s surface.
- Scarlett
- · Replies 3 ·
Projectile Motion in Combination with Energy Problem
- Bound
- · Replies 1 ·
Calculating half life (Decay Constant)
- franwilder
- · Replies 3 ·
Five kinematics and force problems with rope tension and projectiles
- xcfzm94
- · Replies 3 ·
Conceptual question concerning work and nonconservative forces
- JYZero
- · Replies 3 ·
Finding diameter, extension and thickness from stress and strain
- D0m
- · Replies 19 ·
Finding the velocity with out time (s)
- alniquette
- · Replies 4 ·
What is the Resultant Displacement of Superimposed Traveling Waves?
- sydboydell31
- · Replies 1 ·
Angle between 2 vectors given dot product and cross product
- herbally
- · Replies 12 ·
Finding charge density generating an Electric Field
- Ryomega
- · Replies 2 ·
Finding radius a of non-conducting spherical shell
- Ryomega
- · Replies 2 ·
Mixing of substances of different temperature with change of state
- dalcde
- · Replies 4 ·
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 ·
How do resistors control current in a circuit?
- supernova1203
- · Replies 6 ·
Should energy transfer chains for clocks include sound 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 in first light bulb with tungsten filament and series resistors
- lofty28
- · Replies 1 ·
Relavtivity Question - Unit Needed
- TheController
- · Replies 1 ·
Net electric flux through submarine hull with multiple charges
- 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 ·
Two conducting rods on parallel rails in a magnetic field
- throneoo
- · Replies 9 ·
Ball thrown upward from window: find impact velocity and delay for second ball
- 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 ·
Finding a source for electric field between 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 ·
How to solve projectile motion 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 ·
Shell fired straight up from moving tank and dropped package from plane
- 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 ·
Finding tension in a ski boat tow rope from power difference
- Parzival
- · Replies 11 ·
Finding equivalent resistance with mixed series and parallel resistors
- Snape1830
- · Replies 35 ·
Mechanics - Pulley system finding coefficient of friction
- Roaku
- · Replies 4 ·
Golf ball catapult project: firing through window at 2m and 4m distances
- 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 ·
12kg and 7kg balls colliding at 60 degrees apart
- Physicphillic
- · Replies 1 ·
Finding impedance in mixed parallel and series RLC circuit
- mrmlica
- · Replies 3 ·
Converting (1/44)^(10^5) to scientific notation analytically
- 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 ·
Why is PD zero across the 3Ω resistor and why count all battery internal resistances?
- 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 ·
Maximum speed before string breaks in vertical circular motion
- 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 ·
Background research topics for singing wine glass experiment
- djinn_Aria
- · Replies 4 ·
Work and Energy Conservation, Need
- BryceHarper
- · Replies 5 ·
Finding the vector from cyclist B's position to the 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 ·