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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Basic Center of mass problem. Need assistance
- blackbyron
- · Replies 2 ·
Finding velocity in a motional EMF circuit
- flyingpig
- · Replies 7 ·
Wider tires experience more friction than narrow tires?
- iRamie
- · Replies 11 ·
Finding inductance in RL circuit with half-final-current time
- harkirat2009
- · Replies 2 ·
Standing waves, aluminium, speed of sound
- LFS
- · Replies 1 ·
Static equilibrium ladder question
- hskrnt8590
- · Replies 6 ·
Elastic Collision and final speed
- learnin'
- · Replies 1 ·
How Is Induced Current Calculated in a Rectangular Loop?
- erinec
- · Replies 6 ·
How do sound systems compensate for human ear sensitivity?
- Mike77
- · Replies 3 ·
Calculating Distance for 140dB Loud Rock Concert Power Output of 93W
- Mike77
- · Replies 2 ·
What is the current due to the circulation of the u quark?
- jhfrey89
- · Replies 2 ·
Open Electric Circuit, which statements are/is true about it
- Femme_physics
- · Replies 1 ·
Distance traveled of a ball dropped in water.
- Smusko
- · Replies 4 ·
A Star's Power Output at 11 Light Years Away?
- cattons3
- · Replies 2 ·
Physical Interpretation for two answers for time
- mateomy
- · Replies 4 ·
Thermodynamic and an organic matter
- appplejack
- · Replies 7 ·
What is the air pressure in the container before it is opened?
- tigers4
- · Replies 3 ·
Clay ball shattering into three pieces after hitting wall
- gingerbread
- · Replies 1 ·
Energy Needed to Ionize a H-atom
- tydychic
- · Replies 1 ·
Why is the image distance (3/2)f when object distance is 3f?
- libra10489
- · Replies 6 ·
Where is Gravitational Potential Energy Zero?
- sphyics
- · Replies 2 ·
How Does Water Density Change at Depths?
- Abhishekdas
- · Replies 3 ·
Current electricity and circuits
- Abhishekdas
- · Replies 6 ·
ELectric field inside a cavity
- Abhishekdas
- · Replies 8 ·
Electrostatics - Finding amount of heat in a circuit
- Abhishekdas
- · Replies 1 ·
Finding displacement and average velocity from a ticker timer experiment
- crays
- · Replies 5 ·
Intensity and Superposition of waves
- Abhishekdas
- · Replies 2 ·
How Can I Solve This Electric Field Integral?
- PhysicsGirl90
- · Replies 3 ·
Electric Field at S when Charge q is Displaced from O
- Abhishekdas
- · Replies 9 ·
Solving the Electric Field of a Spherical Shell
- DrMcDreamy
- · Replies 2 ·
Hidden object at bottom of pool with a raft.
- pdeco1
- · Replies 2 ·
How Much of a Rope Can Hang Over a Table Without Sliding?
- frog210293
- · Replies 1 ·
What is the work energy theorem for a car at different distances?
- Llacrossedude
- · Replies 1 ·
Electrostatic potential and capacitance
- vipulgoyal
- · Replies 4 ·
Alright PF logged me out and erased all my work
- flyingpig
- · Replies 17 ·
What Is the Flux Through a Disk-Shaped Area in a Solenoid?
- flyingpig
- · Replies 7 ·
Student launched by compressed spring up a 30° incline with friction
- UMDstudent
- · Replies 11 ·
How to define change of angular momentum in non-isolated system?
- DannyPhysika
- · Replies 4 ·
I did everything right, but answer Key is wrong right?
- flyingpig
- · Replies 4 ·
Center of mass of Pluto and Charon system without masses
- elsternj
- · Replies 3 ·
Finding emf when capacitor current equals peak current
- Sarah88
- · Replies 2 ·
Why Are Radians Used in Calculating Tangential Speed?
- Lfrizz
- · Replies 1 ·
RC circuit problem with time constants
- flyingpig
- · Replies 25 ·
LC circuit Oscillatiing current
- lpau001
- · Replies 3 ·
V^2 = vi^2 + 2ad, is v velocity or speed?
- flyingpig
- · Replies 43 ·
Block up an incline and then how far it goes. HARD
- kerbyjonsonjr
- · Replies 2 ·
Electromagnetic power of a proton leaving a cyclotron
- JHans
- · Replies 1 ·
Using conservation of momentum to find final velocity in a collision
- elsternj
- · Replies 3 ·
Angular Momentum of a shop sign
- lastguymade
- · Replies 8 ·
Solving Vector Components and Theta with Pythagorean Theorem
- ColinTI89
- · Replies 1 ·
Does Electron Speed Impact Work and Position Uncertainty?
- Stevo11
- · Replies 2 ·
Field inside a conductor is zero
- madah12
- · Replies 10 ·
Finding the speed before impact using the work-energy theorem
- tiffannielee
- · Replies 1 ·
Why can't I add the voltage drop?
- flyingpig
- · Replies 4 ·
This MIT problem is confusing me
- flyingpig
- · Replies 16 ·
Calculating Water Pump Efficiency and Work Rate
- p.mather
- · Replies 4 ·
Electron deflection in a cathode ray tube
- pcandrepair
- · Replies 7 ·
Spring cannon question involving conservation of energy.
- MrMagoo22
- · Replies 1 ·
Head-on collision between a neutron and stationary carbon atom.
- ZombieJohn
- · Replies 1 ·
Possible Frequencies of Tuning Fork for Beat Frequency of 4.85 Hz
- tomasblender
- · Replies 2 ·
Force exerted by 2 supports on the plank
- pech0706
- · Replies 1 ·
Attraction of two charged particles
- Gunthi
- · Replies 6 ·
Charge on grounded conductor L when charged conductor K is connected to it
- blmatan
- · Replies 2 ·
Understanding Equations of Motion: Differentiating with Respect to Time
- AStaunton
- · Replies 4 ·
Solve RC Circuit Problems: 2.00μF Capacitor, 1.3 kΩ Resistor
- mad_monkey_j
- · Replies 5 ·
Vertical displacement of electron
- willson.slp
- · Replies 3 ·
Calculating coefficient of static friction without a mass.
- Gheret
- · Replies 8 ·
How Long Will It Take for Storm Waves to Reach Hawaii?
- YEAH!
- · Replies 4 ·
Finding pressure at depth using P2=P1+pgh
- yesshh
- · Replies 3 ·
Inquiry to do with conservative forces
- AStaunton
- · Replies 1 ·
Magnetic field and currents problem
- waterbottle12
- · Replies 1 ·
Was the collision between two billiard balls elastic?
- aeromat
- · Replies 2 ·
Brightness of lightbulb concept questions
- jakeddong
- · Replies 1 ·
Elastic collision between mosquito and Dinosaur
- Freeman25
- · Replies 2 ·
How does magnetic force cause a loop to contract
- doublea500
- · Replies 1 ·
Thermodynamics closed system - first law
- meanmachine
- · Replies 1 ·
Review My Understanding of Electrical Concepts
- MitsuShai
- · Replies 4 ·
Calculating Peak Current in a Microfarad Capacitor Circuit
- Sarah88
- · Replies 2 ·
How fast does the blue pulse travel?
- burgerkin
- · Replies 1 ·
How to calculate conductivity when you know the electron and hole mobility?
- Sceptile
- · Replies 11 ·
What does interference really mean?
- sona1177
- · Replies 2 ·
What Is the Diameter of a Nichrome Wire in a Circuit?
- dismalice
- · Replies 1 ·
Mirror height to reflect bulb light across right wall
- JJBladester
- · Replies 7 ·
How Does Tension Affect the Frequency of Standing Waves?
- tomasblender
- · Replies 1 ·
Biophysics: Amplitude of the pressure wave.
- remakm
- · Replies 1 ·
B-field question Lorentz's force
- flyingpig
- · Replies 34 ·
Calculating frequency and wavelength off of a graph
- Havenater23
- · Replies 3 ·
How Do You Calculate Air Resistance for Projectiles in Excel?
- Peter G.
- · Replies 1 ·
What is the answer key doing in this circuit
- flyingpig
- · Replies 4 ·
Mass attached to a rope (simple)
- saltyload
- · Replies 3 ·
How Do Magnetic Fields and Forces Behave Around Infinite Wires?
- Hooke's Law
- · Replies 3 ·
Calculating the speed of the baseball
- aeromat
- · Replies 3 ·
Calculating velocity/acceleration from sway of an object.
- Gheret
- · Replies 3 ·
What Are the Limits of Integration for a Double Integral in a Triangular Region?
- Tony11235
- · Replies 8 ·
Net Force and Applied Force: Calculating Acceleration and Friction Coefficients
- Verbally
- · Replies 1 ·
Magnitude of the average force of air resistance on a rocket
- IAmPat
- · Replies 1 ·
Ball Bouncing on an Inclined Plane: Force and Velocity Analysis
- SpicVir
- · Replies 1 ·
Calculations Made Easy for Beginners
- Acstars
- · Replies 5 ·
Electric potential of a spinning rod.
- Lusos
- · Replies 2 ·
How Is Work Calculated When a Block Is Pushed Up a Wall?
- Idividebyzero
- · Replies 4 ·