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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Moment of Inertia Ball and Stick Collision
- tachu101
- · Replies 5 ·
Lamp Brightness in Parallel Circuit
- calculator20
- · Replies 2 ·
What is the smallest vertical force which will move the crate
- Air
- · Replies 5 ·
Trying to Find Center of Gravity on Semi Truck (a real one)
- Saladsamurai
- · Replies 3 ·
A-level gas and thermal physics exam questions with multiple parts
- NeroBlade
- · Replies 1 ·
What are the Moments of Inertia for a Ball and Hoop on a Ramp?
- vector7
- · Replies 2 ·
Troubleshooting Centripetal Force Lab Calculations: What Went Wrong?
- Elbobo
- · Replies 3 ·
What is the electron concentration in a p-doped semiconductor?
- peanutbutter
- · Replies 2 ·
How accurately must you measure particle speed to distinguish a pion from a kaon at 2 GeV?
- DukeLuke
- · Replies 6 ·
How to Determine Forces and Tension in a Rolling Disk and Attached Mass System?
- tachu101
- · Replies 9 ·
Finding work function and kinetic energy with threshold frequency 4.62×10¹⁴ Hz
- potamus
- · Replies 1 ·
Energy, Power, Work related question
- alevis
- · Replies 2 ·
Showing that energy of a falling object remains constant
- MadmanMurray
- · Replies 1 ·
Does Increasing Torque Affect Kinetic Friction When a Wheel Slips?
- Just a nobody
- · Replies 3 ·
How Do You Solve These Constant Acceleration Problems?
- Meghal
- · Replies 1 ·
Find train velocity and displacement with time-dependent acceleration a=2t
- MagMag
- · Replies 1 ·
Conservation of momentum and jumping girl
- nns91
- · Replies 4 ·
How Does the Sojourner Rover Perform Scientific Tasks on Mars?
- Raynor.Jim
- · Replies 2 ·
Pendulum collision and elastic collision
- ihateap
- · Replies 1 ·
Proton accelerated through 1.2×10⁴ V potential difference
- Inertialforce
- · Replies 13 ·
How Do I Solve Thin Film Interference Problems?
- Nivlac2425
- · Replies 4 ·
Mechanical Energy question (Skier going down a slope confusing )
- physicist2be
- · Replies 2 ·
Vector expressions - equivalence
- jemerlia
- · Replies 2 ·
Electrostatics and potential question
- Inertialforce
- · Replies 4 ·
Charged ball suspended in uniform electric field at 15 degrees
- AznBoi
- · Replies 6 ·
What Is the Applied Voltage V Between Charged Plates?
- Inertialforce
- · Replies 4 ·
Projectile Motion Problem with spitting a seed
- cmh_580
- · Replies 8 ·
Masses and a Light Rod: Solving for Linear Acceleration Without Gravity
- tachu101
- · Replies 7 ·
Electrostatics - Magnitude and direction of electric force
- Inertialforce
- · Replies 1 ·
Gate rotating when bull charges: torque, energy, angle after 3 seconds
- tachu101
- · Replies 5 ·
Minimum thickness of plastic sheet for destructive interference in double-slit
- Nivlac2425
- · Replies 5 ·
How Does Torque Relate to Force and Distance in Physics Problems?
- maccha
- · Replies 1 ·
What is the angular speed of a rotating line of skaters?
- vladimir69
- · Replies 6 ·
Non-uniform acceleration equation
- candycooke
- · Replies 1 ·
Calculating Relativistic Length of a Moving Spaceship
- salsabel
- · Replies 7 ·
Calculating Rotational Kinetic Energy and Instantaneous Rate of Change
- tachu101
- · Replies 15 ·
What is the time bullet take to get at the animal ?
- UNknown 2010
- · Replies 1 ·
Horizontal distance of horizontally fired projectile
- physicsman2
- · Replies 3 ·
How Is String Tension Calculated in Vertical Circular Motion?
- Kyriam
- · Replies 1 ·
What is Liouville's theorem all about - Thermodynamics
- annetjelie
- · Replies 4 ·
Angular velocity find angular displacement
- tachu101
- · Replies 6 ·
What is the Rebound Velocity of a Pea Bouncing off a Surface?
- thomas49th
- · Replies 6 ·
Energy of the Simple Harmonic Oscillator
- adashiu
- · Replies 8 ·
Calculating Impulse in a Collision: Positive or Negative Velocity?
- ph_lover3294
- · Replies 4 ·
Centre of mass of a solid hemisphere.
- grahammtb
- · Replies 7 ·
Simple Moment of Inertia Question
- tachu101
- · Replies 2 ·
Hydrostatic equilibrium for stars question
- coffeem
- · Replies 1 ·
Pendulum Problem: AP Physics 1985B1
- hty21
- · Replies 1 ·
The Block–Spring System Revisited
- adashiu
- · Replies 4 ·
Difference between Static and Kinetic coefficients of friction?
- Air
- · Replies 7 ·
How Does Net Force Affect Object Movement Along a Straight Line?
- Raynor.Jim
- · Replies 3 ·
Joule Mobile Mass Transporter Project
- ieatoranges
- · Replies 4 ·
Calculate the Flux through the Pipe Part 2
- Saladsamurai
- · Replies 23 ·
Acceleration of Two Objects on a Pulley
- Yoshiko75
- · Replies 14 ·
Cart colliding with block in inelastic collision
- blue_bee29
- · Replies 1 ·
Cart colliding with wood block in inelastic collision
- blue_bee29
- · Replies 1 ·
Two objects colliding elastically on a frictionless surface
- blue_bee29
- · Replies 3 ·
Calculating Acceleration of 2 kg Ball on Inclined Plane
- Pupil
- · Replies 9 ·
Distinguishing the difference between the same note on different instruments
- clairez93
- · Replies 6 ·
Is the Velocity Vector Perpendicular to the Position Vector?
- Tasell
- · Replies 1 ·
Projectile motion (the dreaded volleyball problem)
- boomer77
- · Replies 17 ·
Car Collision Speed Calculations
- Gregg
- · Replies 4 ·
Two masses on an inclined plane connected by a pulley
- hersheykis
- · Replies 12 ·
Finding molecules from a thimble of water scooped from the ocean
- NZ-Minty
- · Replies 7 ·
How Quickly Can Two Stacked Boxes Travel 5 Meters When Pulled by a Rope?
- theneedtoknow
- · Replies 3 ·
Velocity/displacement 11th grade physics
- lax1113
- · Replies 5 ·
Projectile motion (ball thrown horizontally)
- boomer77
- · Replies 13 ·
What is the Initial Mass Function problem and its solution?
- grahammtb
- · Replies 4 ·
What Forces Act on a Car at the Peak of a Hill?
- pippintook
- · Replies 1 ·
Motion with a changing acceleration
- fizics
- · Replies 6 ·
Does a sliding can reach the bottom sooner than a rolling can?
- gigglin_horse
- · Replies 4 ·
Projectile motion (soccer kick)
- boomer77
- · Replies 24 ·
What type of Accelrator is the LHC?
- TFM
- · Replies 3 ·
List three reasons why knowing the speed of sound is important to your life?
- Shamamsi
- · Replies 2 ·
Astronomy Polytrope definition question
- coffeem
- · Replies 1 ·
Constituent traveling waves and strings and vibrations
- clairez93
- · Replies 2 ·
Calculating acceleration and brake force
- cyberhev
- · Replies 5 ·
Why is the sign of mu flipped in linearized pendulum equation?
- saltine
- · Replies 6 ·
What is the Density of a Mixture of Two Liquids in a 1:3 Ratio?
- dude123
- · Replies 2 ·
Calculate the Flux through the Pipe
- Saladsamurai
- · Replies 4 ·
Question on timbre (Sound waves)
- Absolution
- · Replies 3 ·
Heat Transfer Final Temperature Problem
- breez
- · Replies 1 ·
Projectile motion question (baseball problem)
- boomer77
- · Replies 7 ·
How Is Friction Force Calculated on an Incline?
- lu6cifer
- · Replies 1 ·
Resistance of a brick - Old coursework question
- Burningmace
- · Replies 4 ·
Deflection of plasma stream near magnetically-responsive surface
- ChasChandler
- · Replies 2 ·
How Does Feynman's Definition of Photon Polarization Differ from Hecht's?
- Sam_Goldberg
- · Replies 6 ·
Calculating G Forces or the Centripical force
- fastlane51
- · Replies 6 ·
So, How to Find x - Rod Standing on Frictionless Table (Rotation)
- FedEx
- · Replies 13 ·
Total distance fallen by end of nth second if d distance falls in nth second
- jemerlia
- · Replies 6 ·
Solving Electric Potential 3: (kQ^2/R)
- asi123
- · Replies 5 ·
Why Can't I Get the Correct Constants in My Chemical Reaction Calculations?
- saltine
- · Replies 2 ·
How long for a police car to catch a speeder accelerating at 3.01 m/s²?
- Axpyre
- · Replies 7 ·
How does the frequency of a wave affect its power transmission?
- clairez93
- · Replies 2 ·
Solving Frequency Equation to Match y=mx+c
- l.e.d.
- · Replies 6 ·
Fundamental standing wave problem
- clairez93
- · Replies 4 ·
Physics question-finding the magnitude of the electric field
- nba23
- · Replies 1 ·
How Do I Calculate the Internal Resistance in a Circuit?
- tweety1234
- · Replies 3 ·