Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
When is the Current in the RL Circuit Closest to 24V Across the Inductor?
- bdh2991
- · Replies 27 ·
How Does Gravity Affect an Object Falling Through a Hole in Earth?
- stompyourface
- · Replies 4 ·
What is the energy density of blackbody radiation at 2.50 x 10^3 K?
- glebovg
- · Replies 14 ·
How Does a Changing Current in One Wire Affect the Current in an Adjacent Wire?
- freeofwork
- · Replies 1 ·
What Angle Should the Archer Shoot the Arrow for Optimal Accuracy?
- xxpbdudexx
- · Replies 3 ·
Photo-electric effect, Compton Scattering
- mm2424
- · Replies 3 ·
Force current between an Infinitely Long Wire and a Square Loop
- brunch43
- · Replies 7 ·
Potential difference at halfway point between cathode and anode
- mateomy
- · Replies 10 ·
Calculating Forces Acting on a 50m Bridge with Two Supports: A Torque Question
- kc0ldeah
- · Replies 1 ·
How to find the time of two object passing each at opposite direction.
- louis676
- · Replies 5 ·
Fluid Dynamics: Waterflow out of a Tank
- Noorac
- · Replies 4 ·
Classic Hole through Earth Problem. Period of Oscillation with Varying Density.
- BeeBopTop
- · Replies 13 ·
Why is the calculated change in PE for a mass on a spring incorrect?
- Emilyjoint
- · Replies 1 ·
Define 2nd law of thermodynamics in two ways
- ZedCar
- · Replies 1 ·
Simple Pendulum Centripetal Acceleration
- robwashere
- · Replies 2 ·
Horizontal Spring, Find Unstretched length
- ZxcvbnM2000
- · Replies 4 ·
Calculating Pressure w/ Nitrogen Molecules: Where to Start?
- cuddlylover
- · Replies 2 ·
Magnetic Field near a curving infinite wire in 3d space
- speedofdark8
- · Replies 4 ·
Magnetic field direction created by rectangular circuit
- yvesers
- · Replies 1 ·
Heisenburg Uncertainty Principle - Seems like an easy question?
- tnbstudent
- · Replies 3 ·
An ideal (lossless) transformer has 4 times as many turns
- bckcookie
- · Replies 1 ·
Thermal expansion of a copper cylinder
- dan_and_sim
- · Replies 1 ·
Elevator going down; Main energy transformation?
- magiclink
- · Replies 2 ·
Finding total current when multiple voltage sources appear in circuit
- womatama
- · Replies 2 ·
The angle of the first order diffraction
- cake_is_a_lie
- · Replies 2 ·
Initial energy of a charged particle
- skweeegor
- · Replies 3 ·
How Do Slits and Gratings Create Light Patterns You See?
- sparkle123
- · Replies 7 ·
Ideal Heat Engine: Input Temp Change, Exhaust Temp Change?
- cuddlylover
- · Replies 7 ·
Rotation : When will the rod slide off?
- AlchemistK
- · Replies 11 ·
Magnetic flux change in a 200-loop coil with decreasing field
- Dany7777777
- · Replies 1 ·
Package sliding on car dashboard with static friction coefficient 0.333
- xxpbdudexx
- · Replies 3 ·
Work required to disassemble a helium atom
- tevatron1
- · Replies 2 ·
Emf in a conducting rod moving away from a wire with current I
- Mauvai
- · Replies 1 ·
Grade 12 Circular Motion Question
- mrcheeses
- · Replies 7 ·
Compute ΔB seen by a magnetometer flown on a satellite
- harlowz2
- · Replies 3 ·
Magnetic Flux Through Wire Loop
- bspride
- · Replies 3 ·
Atomic density of argon in liquid and gas form
- EmmaLemming
- · Replies 6 ·
Heat released by mercury while filling up the tube
- mazhius
- · Replies 1 ·
Internal Energy of Falling Stone in Vacuum: Is ΔU Zero?
- ketz
- · Replies 1 ·
Electric field at wire surface between coaxial cylinders
- Rider4
- · Replies 4 ·
Ideal Gas Law with spring, no numbers, closed container
- MrMaterial
- · Replies 9 ·
Check work on kinematics problem
- caperjay
- · Replies 3 ·
Calculating flux when charge on vertex of cube
- TsAmE
- · Replies 2 ·
Where Electric Field Strength + Potential are Zero?
- karine
- · Replies 1 ·
Why is mass relevant in the charged particle on a ring problem?
- Dranzer
- · Replies 2 ·
Voltage, real reactive power question
- debwaldy
- · Replies 4 ·
Radial and tangential acceleration of a point on a rotating turntable
- blob84
- · Replies 3 ·
Finding final pressure when adiabatic compression doubles temperature
- defmar
- · Replies 8 ·
How can i find the Potential difference?
- yy205001
- · Replies 4 ·
Calculating Work to Put Spacecraft in Orbit
- AudenCalbray
- · Replies 17 ·
Ratio of Kinetic Energies for Two Moving Charges in Uniform Electric Field
- Kishor Bhat
- · Replies 11 ·
What type of molecule has the highest average speed in a room filled with gases?
- PeachBanana
- · Replies 2 ·
How do i find the coefficient of friction
- adorrea
- · Replies 4 ·
Finding the initial velocity of an object
- adorrea
- · Replies 1 ·
Temperature change in isobaric process for ideal gas
- bikeman86
- · Replies 2 ·
General special relativity question
- channel1
- · Replies 2 ·
Time For A Car To Reach A Truck
- Bashyboy
- · Replies 5 ·
Force and center of gravity for a steel mud gate
- bcd201115
- · Replies 2 ·
What is the intensity of sound 2?
- eagles12
- · Replies 1 ·
Speed of Waves traveling on a taut string
- eagles12
- · Replies 1 ·
Frequency of two objects moving toward eachother
- eagles12
- · Replies 3 ·
Sound Waves Traveling Down a String
- eagles12
- · Replies 1 ·
Coefficient of kinetic friction on 2 different parts
- yannguyen
- · Replies 4 ·
Infinitely tall tree falling in a forest
- ttzhou
- · Replies 8 ·
Euler's Equations, a freely rotating lamina
- Oijl
- · Replies 2 ·
Multiple-choice question, Electric field and potential
- goodstudent
- · Replies 2 ·
What's the relationship between UA, Ub and Uc?
- pepsico007
- · Replies 1 ·
Could given function represent a travelling wave?
- wirefree
- · Replies 3 ·
How Do You Calculate Torque in Bicycle Chain Drives?
- mazz1801
- · Replies 3 ·
Magnetic Flux Calculation: Square Loop in 0.5T Field
- domyy
- · Replies 1 ·
Motion of a Uniform Stick on a Frozen Lake After an Impulse
- ZxcvbnM2000
- · Replies 9 ·
How Do You Calculate Final Pressure in an Expanding Gas Scenario?
- cuddlylover
- · Replies 6 ·
Frictional Forces and Two dimensional constant acceleration problem
- Zach Lunch
- · Replies 2 ·
Electric field due to a charge density.
- FLms
- · Replies 9 ·
Physics bullet in wood; I can't figure it out?
- x86
- · Replies 4 ·
A question related to radioactivity.
- DarkStalker
- · Replies 1 ·
Finding the length of a box confining an electron?
- HenryHH
- · Replies 3 ·
What is the Electric Field in a Ball with a Positive Charge at R/2?
- dannee
- · Replies 1 ·
Nuclear Fusion Q: Create Radioactive Substances?
- incarcerate
- · Replies 2 ·
Initial velocity of soccer ball and length of time in the air- projectile motion
- dani123
- · Replies 9 ·
Torque Calculation. Short- Am I correct?
- mazz1801
- · Replies 7 ·
Calculating Work with a Variable Force
- physics79
- · Replies 4 ·
Determine acceleration when lifting a bucket.
- zeralda21
- · Replies 6 ·
How to Calculate Comet Halley's Distance from the Sun Using Kepler's Laws
- bcd201115
- · Replies 1 ·
How is Work Calculated in an Electric Field?
- jsmith613
- · Replies 1 ·
Finding final temperature when mixing aluminum, water, iron, and ice
- kimkibun
- · Replies 4 ·
What does pm mean when measuring molecular diameter?
- ZedCar
- · Replies 2 ·
Solve this algebraic equation for 'D' (Hydraulics)
- TimmehTyme
- · Replies 1 ·
Harmonic Oscillator in Dirac Theory
- eones
- · Replies 3 ·
Non inertial or inertial reference frame?
- Lengalicious
- · Replies 20 ·
Heating Mercury Affecting Floating Lead
- JSGandora
- · Replies 1 ·
A kirchoff's law question with multiple batteries
- Chester8990
- · Replies 3 ·
Related to Constant acceleration
- HelpMeHelpYou
- · Replies 7 ·
Frame of reference and relativity.
- bayan
- · Replies 2 ·
Rearrangement of a complex radiation formula
- murdrobe
- · Replies 6 ·
Calculating Angular Acceleration in Judo Foot-Sweep Move
- Batz74
- · Replies 6 ·
Calculating Heat Required to Heat Water from 15.5°C to 85°C
- kimkibun
- · Replies 1 ·
Solve Quantum States: n=6, l=1 Hydrogen Atom
- jessiewills
- · Replies 3 ·
Guitar acting as a helmholtz resonator. Explanation?
- jackscholar
- · Replies 1 ·
Calculate open pipe length given resonance.
- seker
- · Replies 3 ·