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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Archived The drift and diffusion currents under equilibrium
- anhnha
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Heat and Internal Energy - Thermodynamics
- Marcin H
- · Replies 5 ·
Archived Calculating charge on a capacitor in a DC circuit
- dancavallaro
- · Replies 1 ·
Find the equivalent resistance between AB
- arutor
- · Replies 15 ·
Archived Electrical energy dissipated in resistance of a wire
- osugirl10
- · Replies 1 ·
Pulley question assigning conventions
- putongren
- · Replies 8 ·
Archived Current of Coil, and Emf of Coil.
- rcmango
- · Replies 1 ·
How to solve for the normal force in pole vaulting using the equation ΣF = ma?
- x2017
- · Replies 11 ·
Help with Electric Forces Problem and Equilateral Triangles
- Phy_TR
- · Replies 3 ·
Calculating Mass and Weight on the Moon
- reminiscent
- · Replies 4 ·
Can Gauss' Law Be Applied Here?
- Taulant Sholla
- · Replies 5 ·
Electric field of a non-uniformly charged ring
- zapman345
- · Replies 14 ·
Bouyant force when there is no liquid beneath an object
- Titan97
- · Replies 8 ·
Archived How Does Closing a Switch Affect Capacitors and Resistors in a Circuit?
- JosephK
- · Replies 1 ·
Force Body Diagram Physics problem: Finding mass of boxes
- Stendhal
- · Replies 2 ·
Archived Solving Potential Divider Questions: Output Voltage
- jamie_o
- · Replies 1 ·
Archived Are the terminals of a battery neutral?
- Ahsan Khan
- · Replies 1 ·
How do I calculate distance from acceleration and velocity?
- Eclair_de_XII
- · Replies 4 ·
Archived How Does Current Flow Differ in Series vs Parallel Light Bulb Circuits?
- lampshader
- · Replies 1 ·
Archived Simple question on current electricity
- Abhishekdas
- · Replies 1 ·
Resultant Impulse Homework: ΣFΔt = mΔv
- x2017
- · Replies 4 ·
Projectile and Uniform Circular Motion
- Dietrichw
- · Replies 3 ·
Archived Q about derivation of formula for current in AC with inductor
- xasry
- · Replies 1 ·
Archived Charge and Energy for Capacitors in Different Configurations
- rowkem
- · Replies 1 ·
Archived Single phase question regarding Inductance
- ric115
- · Replies 1 ·
How Does Temperature Affect Pendulum Clock Accuracy?
- Vibhor
- · Replies 17 ·
Archived How Is Energy Distributed in a Series RC Circuit?
- StephenDoty
- · Replies 1 ·
Archived Centripetal Acceleration and string tension Question
- BlueCardBird
- · Replies 1 ·
Determining shortest possible "time" to reach destination
- arpon
- · Replies 12 ·
Understanding Potential Dividers in Circuit Analysis
- suv79
- · Replies 33 ·
Physics Experiment Ideas Using Snowboarding
- Emily R.
- · Replies 2 ·
Archived Atomic Spectrum of an Unknown Element
- XianForce
- · Replies 1 ·
Archived Find the angular acceleration and velocity at the end of a rod.
- MariusM
- · Replies 1 ·
Archived Finding a lot of answers to water boiling point.
- Celciusman
- · Replies 1 ·
Archived Isothermal expansion of gas question
- paulnz
- · Replies 8 ·
Archived How Does Adding Heat Affect Pressure in a Sealed Steam Container?
- TheBelgiumWaff
- · Replies 1 ·
Archived A Resistor and a Capacitor in a Series AC Circuit
- sskakam
- · Replies 3 ·
Archived RC Circuit: Phase & Magnitude of Current
- tjr39
- · Replies 2 ·
Change in Momentum of shopping cart
- watermarked
- · Replies 2 ·
Archived How to use series expansion to simplify
- tadarah
- · Replies 1 ·
Archived Series RLC Circuits: Calculate VL, VC, VR & Phase Angle Phi
- Bob Loblaw
- · Replies 1 ·
What Is the Maximum Initial Velocity of a WW2 German U2 Rocket?
- Balsam
- · Replies 9 ·
Net Electric Field for 4 Equidistant Charges
- CARNiVORE
- · Replies 2 ·
Solving for velocity in relativistic momentum
- JWood521
- · Replies 2 ·
Calculate Bohr Radius of Hydrogen Atom (n=600)
- 1v1Dota2RightMeow
- · Replies 1 ·
Archived Thermo I Question: Two vessels coming to equilibrium. Finding final values.
- deltagal
- · Replies 1 ·
Girl's Velocity Relative to Ground: Solving a Swimming Problem
- FritoTaco
- · Replies 14 ·
Archived Maximum Current in LC Circuit: Solving for the Peak Amplitude
- ttiger2k7
- · Replies 1 ·
Archived Sensitivity in potential divider circuits.
- Sockpirate
- · Replies 1 ·
Archived AC Circuit Analysis for Complex Voltages and Impedances
- otester
- · Replies 2 ·
What is the explanation for the differential form of Planck's law?
- Alettix
- · Replies 11 ·
Is the Force Applied to the Ball Zero in this Scenario?
- Anjum S Khan
- · Replies 11 ·
Trouble with ball being thrown up in the air problem
- Frankenstein19
- · Replies 13 ·
How can I solve for impulse without time or velocity?
- x2017
- · Replies 3 ·
Forces on an inclined plane with a pulley
- kmerr98277
- · Replies 1 ·
Archived How Do You Calculate Resonant Frequencies and Voltages in an RCL Circuit?
- Kazk
- · Replies 1 ·
Is There Buoyancy on a Sealed Metal Cube in Water?
- lavankohsa
- · Replies 22 ·
Archived Estimate nuclear energy generation rate (formula given) per unit MASS MASS?
- daleklama
- · Replies 1 ·
Archived Time estimation - mass spectrometer
- Lindsayyyy
- · Replies 1 ·
Archived Intensity of coherent/incoherent light
- MFAHH
- · Replies 1 ·
Archived Special relativity: train between two cities
- mace2
- · Replies 1 ·
Archived Understanding Interference Patterns and the Wave/Particle Duality of Light
- Gewitter_05
- · Replies 1 ·
Calculating Displacement in Relative Motion
- Balsam
- · Replies 12 ·
The difference between north of east and east of north
- bigcookie
- · Replies 3 ·
Archived Solve RLC Circuit Power Factor Problem: 3 x 10^3 Hz, 139V rms, 37.1A rms
- yankeekd25
- · Replies 1 ·
Negative vector why isn't it choice 4.
- bigcookie
- · Replies 4 ·
Man on Platform: Min Value of μs for Radial Motion to be Straight
- bznm
- · Replies 2 ·
Archived How to Calculate Voltage Across R3 in a Voltage Divider Circuit?
- Katfazack
- · Replies 1 ·
Projectile Motion Soccer Ball Problem
- Balsam
- · Replies 22 ·
Archived Centripetal force and Coriolis force?
- Loai27
- · Replies 1 ·
Help approximating an electric field between points.
- Sheolfire
- · Replies 4 ·
Archived Quick circuit help/confirmation
- RyanSchw
- · Replies 1 ·
Acceleration Due to Gravity on Elevator
- Balsam
- · Replies 15 ·
Archived How Much Weight Can a Walkway Hold Before Balance Is Lost?
- Emmanems08
- · Replies 1 ·
Archived Charging and discharging RC circuits
- WJSwanson
- · Replies 1 ·
Archived Rotation with String Slipping & Not Slipping
- Morenzio
- · Replies 1 ·
Archived Calculate Deformation of Pinching a Pipe
- physics337
- · Replies 1 ·
Archived Force from a Hemispherical shell
- Emspak
- · Replies 1 ·
Archived Second Law of Thermodynamics - Refrigerators
- Cam-Pat
- · Replies 1 ·
Archived How Do CLC Circuits Oscillate in Series and Parallel Configurations?
- freemind
- · Replies 1 ·
Kleppner/Kolenkow Pulley Example
- Cosmophile
- · Replies 5 ·
Archived Iterative method to solving the Colebrook-White equation
- theBEAST
- · Replies 1 ·
Archived Finding the thermal energy and Q for an isobaric process.
- Brittbrit22
- · Replies 1 ·
Archived Capacitor Charge Redistribution in Series and Parallel Circuits
- snoweangel27
- · Replies 1 ·
What impulse must act on the bowling ball to stop it?
- x2017
- · Replies 1 ·
Archived Is There a More Efficient Way to Solve LC Circuit Problems?
- bishy
- · Replies 1 ·
How to find distance that the rope must sag
- kylenic1997
- · Replies 9 ·
Calculating Final Velocity in Free Fall from Given Displacement and Acceleration
- Balsam
- · Replies 2 ·
Archived What Is the Maximum Voltage on a 1200 μF Capacitor in an LC Circuit?
- KhaNgo
- · Replies 2 ·
Archived Explaining drag is proportional to speed squared with Bernouilli's Equation
- Jack.P
- · Replies 1 ·
Solving Vector 1: Is arctan the Only Way?
- brycenrg
- · Replies 1 ·
Archived Forces in achilles and foot bone
- tristanmagnum
- · Replies 1 ·
Archived Maximizing Flow Rate in a Water Pipe: Accounting for Pipe Losses
- soronemus
- · Replies 2 ·
Archived And that is the expression for the current vs. time curve for this circuit.
- TMac92
- · Replies 1 ·
Archived Standing Waves Proof for Open-Open Tubes
- alingy1
- · Replies 1 ·
Archived Relative error of a geiger counter?
- carnivalcougar
- · Replies 3 ·
Archived CMP. Probability of finding electron with E > fermi energy.
- bayan
- · Replies 1 ·
Transverse waves and the movement of particles
- NoIdea2015
- · Replies 3 ·
Maximizing Force in Simple Harmonic Motion
- erisedk
- · Replies 3 ·
Energy Calculations: P=VxIxt - Why Watts & not Joules?
- GSK
- · Replies 5 ·