Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
How Does Cantilever Length Affect Vertical Deflection?
- fangoro
- · Replies 3 ·
Why does total charge through a coil depend only on flux change, not rate?
- FourierX
- · Replies 7 ·
Calculate Velocity of 20g Bullet Striking 15kg Mass on Spring
- hodgepodge
- · Replies 4 ·
Velocity of Car & Truck After Collision: Solved
- Weezergames
- · Replies 2 ·
What Is the Maximum Kinetic Energy of a 2kg Body Moving Along the X-Axis?
- chaslltt
- · Replies 1 ·
Express your answer in Watts and horsepower
- Weezergames
- · Replies 1 ·
How Can Physics Principles Shape Frisbee on the Moon?
- optimus prime
- · Replies 1 ·
Angular rotation and speed with constant angular acceleration
- dr2112
- · Replies 3 ·
Shooting An Arrow: The Final Velocity
- DragonReign71
- · Replies 1 ·
Solving a Rotation Problem: Finding Maximum Velocity for a Cylinder
- iitjee10
- · Replies 5 ·
Elastic collisions and impulse problems
- philadelphia
- · Replies 1 ·
How Long Is the Football in the Air and How Far Does It Travel?
- Neliel06
- · Replies 1 ·
An organ pipe is 84 cm long and at a temperature of 20 degrees C.
- JohnnyB212
- · Replies 6 ·
Bird's total displacement in polar notation
- adidab12
- · Replies 5 ·
Wavelength - distance between a node and adjacent antinode
- keemosabi
- · Replies 4 ·
Is It A Plane? What Is The Final Velocity Of The Arrow?
- DragonReign71
- · Replies 4 ·
What Is the Correct Electric Field Calculation for a Dipole at Its Midpoint?
- Arg3n
- · Replies 3 ·
Solve Hanging Sign Problem: Tension in Two Ropes
- miewann
- · Replies 3 ·
What is the height of the cliff?
- adidab12
- · Replies 5 ·
Electric Field Strength & Work Calculation: 520V, .8cm
- KHurst
- · Replies 1 ·
MULTIPLE CHOICE: Rotational Inertia
- rvhockey
- · Replies 4 ·
Finding Amplitude of Oscillation for a Spring-Mass System
- 05holtel
- · Replies 4 ·
Maximum efficiency of a heat engine
- JJones_86
- · Replies 1 ·
Yo-YO being pulled - does my Answer make Sense?
- TFM
- · Replies 19 ·
Moment of inertia for physical pendulum
- BoogieBot
- · Replies 6 ·
How Is the Total Kinetic Energy of a Car Calculated?
- fishingspree2
- · Replies 2 ·
Question on Conservation of Energy
- itsjustwhoiam
- · Replies 4 ·
Frictional Moment produced by contact between rotating and non-rotating surfaces
- Kreat-Impulse
- · Replies 1 ·
How Do You Model Forces in a Two Mass Spring System?
- hurdler788
- · Replies 3 ·
Finding Mass of an Object [Fluid Mechanics]
- Minihoudini
- · Replies 2 ·
How Much Force Was Applied to Move a Car Over 127 Meters?
- Weezergames
- · Replies 1 ·
How Does a Centrifuge Separate Substances by Density?
- Alexis1210
- · Replies 1 ·
Solving MA: Sum of Forces = Mass x Acceleration
- Oblivion77
- · Replies 1 ·
Centripedal force velocity question.
- bballboy1191
- · Replies 3 ·
Calculating c in Schroedinger Equations
- rayfieca
- · Replies 1 ·
Elastic 2-D Collisions without given masses?
- kelseymclean
- · Replies 5 ·
How to Conduct a Double-Slit Experiment for a School Project?
- Jako
- · Replies 10 ·
Ball Thrown up in air, Velocity Question
- cbrowne
- · Replies 10 ·
What Is the Skydiver's Acceleration When the Parachute Opens?
- Melawrghk
- · Replies 10 ·
Which block has a greater final speed after being hit by a bullet?
- BC2210
- · Replies 14 ·
Conservation of momentum in x and y directions
- Maiia
- · Replies 2 ·
What Is the Radius of the n = 6 Bohr Orbit in O7+?
- rayfieca
- · Replies 5 ·
Conservation of momentum 2 step problem
- Maiia
- · Replies 4 ·
Calculating time/velocity for relativistic cosmic ray
- vaizard
- · Replies 5 ·
What is the solution to a physical pendulum problem involving a cord and a bar?
- fluidistic
- · Replies 8 ·
Coefficient of kinetic friction and acceleration
- Leid_X09
- · Replies 2 ·
Net electric field by two curved rods
- celee2
- · Replies 1 ·
What Output Rating (Watts) Do I Need for a Pump to Lift 8kg of Water per Minute?
- Bayley
- · Replies 6 ·
Impulse and Momentum problem on skaters
- DMOC
- · Replies 3 ·
How many bright fringes appear in a double-slit setup?
- noobie!
- · Replies 6 ·
How Do You Solve an Elastic Collision Problem with Different Masses?
- harkkam
- · Replies 1 ·
Fluid Flow in a Pipe: G-Greater, L-Less, E-Equal
- hellblazer970
- · Replies 3 ·
How Fast Does a Pivoting Meter Stick Swing?
- ljetoxox
- · Replies 1 ·
Finding Tarzan's speed at bottom of swing using energy
- austin1250
- · Replies 1 ·
Horizontal plate fields physics
- imdadasad
- · Replies 1 ·
What Are the Angles for Different Orders of Diffraction?
- noobie!
- · Replies 4 ·
Projectile Motion and Prime Axis
- kathmill
- · Replies 1 ·
What is the maximum payload a helium balloon can lift at 0 degrees C?
- Minihoudini
- · Replies 2 ·
How Do You Calculate Resultant Forces in Ball and Wall Collision Scenarios?
- curiouschris
- · Replies 4 ·
Projectile motion of ball and table
- sweedeljoseph
- · Replies 3 ·
Dust Particles: RMS Speed Calculation (3*10^13 mm/s)
- doggieslover
- · Replies 3 ·
Ball rolling up an incline Final Exam Review
- charan1
- · Replies 3 ·
Colliding balls with different masses
- devanlevin
- · Replies 3 ·
Making the Light Final Exam Review
- charan1
- · Replies 2 ·
Water Balloon Drop Final Exam Review
- charan1
- · Replies 1 ·
How Do You Calculate Net Torque on a Compound Wheel?
- Elbobo
- · Replies 5 ·
20 Hp or 10 Hpwhich one does more work?
- iFat
- · Replies 2 ·
Stellar Culmination: Determining Sidereal Time at the Moment of Arcturus' Peak
- mystery_witch
- · Replies 2 ·
What is the spring constant of the spring?
- JumpinJohny
- · Replies 8 ·
How Does Static Friction Affect a Sled on an Incline?
- cartoonorange
- · Replies 5 ·
Gravitational Field Strength of Space Station w/ N Astronauts
- fizics
- · Replies 10 ·
Gr12 Energy Prob: Solving for Waterfall Speed at Top
- Uncle6
- · Replies 2 ·
Police Car Sound Intensity Change
- JumpinJohny
- · Replies 4 ·
Radial Distance of Projectile Shot from Earth's Surface
- mariahkraft
- · Replies 2 ·
How to Tackle a Challenging Physics Study Guide?
- KennyBowen84
- · Replies 4 ·
Cannon on slope shoots shell horizontally to stop
- devanlevin
- · Replies 13 ·
Teaching myself physics of Perpeltion angle
- Crookes
- · Replies 1 ·
Momentum and Elastic Collisions: Finding Final Velocity Ratio
- fizics
- · Replies 2 ·
How Do You Calculate Torque to Determine String Tension in Physics Problems?
- tweety1234
- · Replies 12 ·
What is the Maximum Acceleration for Contact of Skidding Bicycle Tires?
- fizics
- · Replies 2 ·
How Does the Coefficient of Restitution Affect Collision Outcomes?
- nokia8650
- · Replies 2 ·
Can two independent sources of light be coherent?
- Sparkle2009
- · Replies 2 ·
Atwood Machine, Rotational Inertia, and Energy
- rvhockey
- · Replies 1 ·
Convert AB6.4F Hex to Binary, Octal, Decimal
- noobie!
- · Replies 1 ·
Can Formulas for Acceleration on an Inclined Plane be Written without Friction?
- physiker99
- · Replies 4 ·
How Does a Rod's Angular Velocity Relate to Its Movement in the X-Y Plane?
- suhaskowshik_92
- · Replies 2 ·
Capacitance and Resistance of a fluid
- TFM
- · Replies 5 ·
How Far is the Third-Order Bright Fringe from the Central Maximum?
- noobie!
- · Replies 1 ·
Why are my cross products for magnetic force giving wrong directions?
- jaredmt
- · Replies 1 ·
A Couple of Practice Questions
- MartyVice
- · Replies 3 ·
Finding the Initial Velocity for a 0.8m Volleyball Jump
- psmarz
- · Replies 8 ·
Determine expected value of each winnings
- Kristinanne
- · Replies 4 ·
Get Practice Questions: Top Resources
- psmarz
- · Replies 4 ·
Center of mass on inclined plane
- Elbobo
- · Replies 1 ·
Mean elongation of spring with temperature
- jorgen
- · Replies 5 ·
Tank position problem based upon sound of fire
- brick
- · Replies 1 ·
Heat needed for hydrogen gas with 50 K temperature increases
- Shayna
- · Replies 3 ·
Calculating the Rate of Mass Falling Over an Area
- physiker99
- · Replies 5 ·
Mixing HCI and NaOH: What Could Happen?
- mollasund
- · Replies 3 ·
Calculating Tangential Velocity: 0.45kg Ball, 45N Force
- sw3etazngyrl
- · Replies 3 ·