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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Dielectric Material in a Capacitor
- reising1
- · Replies 1 ·
Solving Conductor Questions: Surface Charge, Electron Count, Electric Field
- lha08
- · Replies 1 ·
How do you decide whether to use cosine or sine when calculating torque?
- Tybstar
- · Replies 3 ·
Determining Number of Maxima: 2 Slits & 500 nm Light
- hodgepodge
- · Replies 3 ·
Skateboarder in halfpipe (Uniform Circular Motion Problem)
- Jim01
- · Replies 7 ·
Rearranging equations - is this correct?
- Lucy573
- · Replies 3 ·
What topics are necessary for the AP Physics B exam?
- GreenPrint
- · Replies 1 ·
Does an object physically contract?
- javas1
- · Replies 2 ·
Electric Force charge magnitude
- Octoshark
- · Replies 1 ·
Skier on a Slope - Find Total Distance
- erok81
- · Replies 2 ·
Fundamental frequency and tension
- k77i
- · Replies 2 ·
What is the best way to combine uncertainties in measurements?
- Littlepig
- · Replies 4 ·
Elevator Problem Apparent weight and distance traveled
- charan1
- · Replies 1 ·
Time derivative of electric field? Electromagnetic radiation energy emitted
- GreenLantern
- · Replies 5 ·
Potential difference in uniform electric field
- lha08
- · Replies 1 ·
Momentum + coefficient of restitution this is driving me nuts
- ar202
- · Replies 15 ·
Stopping distance given Vinitial and distance
- Staerke
- · Replies 3 ·
Electric Potential Homework: 3000V Needed for 0.1cm Spark
- lha08
- · Replies 3 ·
Electric Field Between Two Charged Rings: Problem Solved
- Linus Pauling
- · Replies 4 ·
How Does a Faulty Model Rocket's Motion Change Over Time?
- mohd22
- · Replies 1 ·
Solving the Water Bucket Problem: Finding Vmin with Given Parameters"
- black_hole
- · Replies 3 ·
Electric Potential: Derive Expression for Vxy
- thereddevils
- · Replies 4 ·
Electric Field Vanishing at Infinity
- ihearyourecho
- · Replies 4 ·
Fluids Mechanics - Determine algebraic formula for velocity
- kfdleb
- · Replies 1 ·
What is the RMS to Peak Current Ratio for a crossword puzzle?
- puremobi
- · Replies 2 ·
Pulling out a book (friction problem)
- center o bass
- · Replies 2 ·
What is the Temperature Difference Between Two Bodies Connected by a Rod?
- aviravir1
- · Replies 8 ·
Solution of Motion of He2+ Deflected at 84 Degrees
- thereddevils
- · Replies 2 ·
Applying Kinetic Energy and Power Formulas on Inclined Surfaces
- Procrastinate
- · Replies 17 ·
Can Newton's Laws Predict the Motion of a Mass on a Rotating Inclined Cylinder?
- mrsobhan
- · Replies 14 ·
Confirm correctness of simple Newton's second law-type problem?
- zero_infinity
- · Replies 3 ·
Cat Leap Time Calculation - Solving Mechanics Problem
- luysion
- · Replies 6 ·
The collision of billiard balls.
- HeadHurts
- · Replies 1 ·
Moment of Inertia and Angular Momentum
- Kommandant
- · Replies 5 ·
E-field at various points from two large sheets
- Linus Pauling
- · Replies 4 ·
The Concept of Work in Electric Fields
- no_audio
- · Replies 2 ·
How Does a Charged Particle Move Between Oppositely Charged Plates?
- lha08
- · Replies 1 ·
Solving Air Hockey Collision: Puck A & B Speeds
- onyxorca
- · Replies 2 ·
Radii of paths followed by particles in a magnetic field
- Jimmy25
- · Replies 11 ·
Vectors, Direction, and Net displacement
- rorushing4283
- · Replies 1 ·
Calculating Force Needed to Move Crate of Books on Truck
- lou429
- · Replies 1 ·
Conservation of Energy and Springs. Block dropped onto a spring
- coheedcoheed
- · Replies 1 ·
Figuring Out Current Above the Junction: A Puzzling Problem
- happytailsgal
- · Replies 1 ·
What is the Current and Power in the Circuit?
- happytailsgal
- · Replies 3 ·
Ball in head-on collision and being squeezed
- songoku
- · Replies 4 ·
Charge on 1cm Wire: Solve with E=Q/4πεor^2
- Zywo
- · Replies 2 ·
Chi square Dominant phenotype problem
- sonyab523
- · Replies 3 ·
Where to find challenging physics problems (besides textbook) ?
- mr.128
- · Replies 2 ·
Uncertainty when using a line of best fit
- Soilwork
- · Replies 6 ·
Normal force at the top of a loop the loop
- BikeSmoth
- · Replies 3 ·
Torque Calculation for Homework Problem
- jpas
- · Replies 3 ·
What voltage would produce a noticeable current through dry skin?
- PepeF.
- · Replies 1 ·
How Do You Calculate Group Velocity from Phase Velocity?
- lockedup
- · Replies 2 ·
Direction of Magnetic Field when given velocity and force
- skibum143
- · Replies 2 ·
Electric field unknown charge problem
- lha08
- · Replies 3 ·
Find Sum of Collinear Vectors x, y, z
- PiRsq
- · Replies 2 ·
Calculate voltage drop for a circuit
- the-alchemist
- · Replies 1 ·
Path of Light Through a Circular Raindrop
- Tasha9000
- · Replies 5 ·
Easy Energy Conservation. Spring, Incline/Ramp, Friction.
- mcleanrs
- · Replies 5 ·
How Fast Will a Block Travel After Being Pulled on a Frictionless Surface?
- hcps-chent1
- · Replies 1 ·
The nature of waves and Periodic waves
- harkkam
- · Replies 2 ·
Calculating Momentum of a High-Velocity Water Jet?
- ar202
- · Replies 6 ·
Specific Heat Capacity Question - Unknown Mass
- me240
- · Replies 8 ·
Distance of ions from photographic plate
- sarahaha288
- · Replies 2 ·
Solve Schaum's Vector Analysis Prob 4.65: Find Constants a,b,c
- likephysics
- · Replies 2 ·
Defibrillator Physics: Solving for Potential Difference
- lampshader
- · Replies 4 ·
Positively charged plastic rod of length L
- Kas0988
- · Replies 3 ·
Solved: Electric Field of 2 Charged Particles on x-Axis
- lha08
- · Replies 3 ·
Electric Field Above a Small Hole in a Charged Spherical Shell?
- mahorka
- · Replies 1 ·
Calculating Resultant Acceleration in 3D Space
- Procrastinate
- · Replies 4 ·
Doppler Effect, conceptual problems (3)
- Mayy
- · Replies 2 ·
Centripetal Force Lab of string and mass
- reesespieces2
- · Replies 1 ·
Elastic potential energy of a spring
- jeunesse27
- · Replies 2 ·
Help with symbols, propto sideways?
- KateMonster
- · Replies 8 ·
Electric Charge and Spring Force Problem
- laurenflakes
- · Replies 1 ·
Find the resistance of a wire after it is stretched
- collegeconfid
- · Replies 1 ·
Acceleration due to gravity for a hypothetical planet
- balletgirl
- · Replies 3 ·
Distance Waves can travel in space?
- Astar
- · Replies 2 ·
Tennis Ball Launcher Project Calculations
- Bissli
- · Replies 7 ·
How Close Must You Be to Double the Sound Intensity in Decibels?
- 05holtel
- · Replies 9 ·
Which child has the larger linear speed and acceleration on a Merry-go-round?
- lampshader
- · Replies 3 ·
Capacitance with a Geiger Tube
- 1st2fall
- · Replies 3 ·
Are These Capacitors in Series or Parallel?
- PhysicsMark
- · Replies 1 ·
Total kinetic energy in an elastic collision
- copitlory8
- · Replies 1 ·
How Much Gravitational Force Acts Between an Astronaut and a Space Shuttle?
- Finhum
- · Replies 3 ·
Solving Bill's Elevator Mystery: Weight and Distance
- Cfem
- · Replies 1 ·
What are the forces acting on a stationary block with strings pulling on it?
- caela
- · Replies 3 ·
What Is the Acceleration of the Bottom Point of a Rolling Object?
- jumbogala
- · Replies 11 ·
Electrostatic and gravitational forces
- Rowie25
- · Replies 1 ·
Potential across a capacitor in an RC circuit
- Elbobo
- · Replies 2 ·
Help with Newton's Law of Gravitation
- SoulInNeed
- · Replies 5 ·
Calculating Heat Loss and Temperature Drop Using Stefan-Boltzmann's Law
- munchy35
- · Replies 8 ·
Equilibrium of a Uniform Beam with Non-Vertical Forces
- tomsdubs
- · Replies 5 ·
Circular Motion Homework Help: Minimum Acceleration and Coefficient of Friction
- black_hole
- · Replies 1 ·
What Was the Velocity of the Football Thrown by the Quarterback?
- Physuph
- · Replies 2 ·
Capacitance Comparison for Spherical Shells and Solid Spheres
- theneedtoknow
- · Replies 3 ·
Calculate the current i3 in the following configuration
- shimizua
- · Replies 1 ·
Flux through a nonconducting shell
- reising1
- · Replies 8 ·
Angular acceleration of a blender
- BikeSmoth
- · Replies 1 ·
Can a charged capacitor act like a smaller EMF battery in a circuit?
- clavin
- · Replies 7 ·