Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Instantaneous (Midpoint)/Average Velocity?
- cudah
- · Replies 1 ·
Solving Squids' Impulses: Calc Speed to Escape Predator
- mdewdude
- · Replies 9 ·
Radiation Pressure of 75 Watt Bulb at 8 cm
- FrankJ777
- · Replies 1 ·
Find its moment of inertia about its axis of symmetry
- bowma166
- · Replies 6 ·
Moment of Inertia: Mass, Radius, Formula
- uno
- · Replies 6 ·
Induced voltages and step-up transformers
- kitkat2950
- · Replies 4 ·
Can antimatter annihilation lift 81 million tons half a mile into the air?
- starfox07
- · Replies 3 ·
River Current Speed: 2m/s or 4m/s?
- Krystan
- · Replies 1 ·
Finding kinetic energy retained by an object after an elastic head-on collision
- JuniorJumper
- · Replies 1 ·
How is kinetic energy related to momentum in a spring-mass system?
- Shambles
- · Replies 2 ·
What is the Average Flow Rate in a Room with Circular Ducts?
- jerryez
- · Replies 3 ·
Simple frictional forces and forces on boxes
- metsjetsfan
- · Replies 5 ·
Billiard ball collision with change in direction
- mariac
- · Replies 1 ·
What is the Centripetal Acceleration of a Car on a Circular Curve?
- robvba
- · Replies 1 ·
What Are the Solutions to These 2D Motion Problems?
- moaath
- · Replies 2 ·
Mechanical Energy: Solving for Work & Change in ME
- sweedeljoseph
- · Replies 6 ·
Velocity of Ball on a Decline Ramp
- maja_08
- · Replies 3 ·
Angular Position: t=0s, t=3.07s
- Nyx018
- · Replies 3 ·
Work and Energy Block on incline problem
- Thepoint
- · Replies 5 ·
Kinetic Energy of a flat uniform disk
- themilkman
- · Replies 1 ·
Calculate EMF: 3.25 ohm, 440 mH, 3.00 A, 3.60 A/s
- Shackleford
- · Replies 2 ·
Forces- two pulleys w. diff accelerations
- Maiia
- · Replies 1 ·
Two Slit Interference Question =] Thanks
- chipmunk951
- · Replies 4 ·
Air glider question and air resistance
- BJducky
- · Replies 2 ·
Simple harmonic motion pendulum ( only given length and release angle)
- Mr Person
- · Replies 6 ·
How Do You Calculate Vehicle Speeds After a Collision?
- mandos
- · Replies 1 ·
Does anyone know the formula to find tension
- tonya
- · Replies 1 ·
Circuit Analysis: Solving w/ Kirchoff's Laws for Potential Difference b/w a & b
- Sheneron
- · Replies 2 ·
How Does Coulomb's Law Explain the Movement of a Cobweb?
- Shilly
- · Replies 1 ·
Is It Easier to Use Mass Units for Calculating Kinetic Energy?
- soupastupid
- · Replies 1 ·
Static Equilibrium Experiment: Calculations and Analysis | P182A-10.042
- cali_sk8er205
- · Replies 1 ·
Solving Kinetic Energy of Block After Bullet Passes Through
- DPatel304
- · Replies 1 ·
Skier on a sphere problem involving conservation of energy
- BJducky
- · Replies 1 ·
Auxiallry Field in a Coaxial Cable
- TFM
- · Replies 90 ·
What is the length of Joe's image in the mirror?
- jcvince17
- · Replies 2 ·
Need help with simple mechanics problem
- issacnewton
- · Replies 1 ·
Equivalent force-couple system (conceptual)
- jaredmt
- · Replies 1 ·
Calculating Satellite Orbit Height Above Earth's Surface
- livblue23
- · Replies 1 ·
Finding values of x where the infinite geometric series converge
- meeklobraca
- · Replies 4 ·
Three Cylinders (rotational kinematics)
- r34racer01
- · Replies 3 ·
What could be causing the discrepancy in Y0 when finding the placement vector?
- devanlevin
- · Replies 4 ·
Maximum force exerted by floor?
- kristibella
- · Replies 2 ·
EGG drop with elastic potential energy.
- Asubach
- · Replies 5 ·
Free Fall Trajectory? Simple answer
- MacFanBoy
- · Replies 4 ·
How Do You Calculate Force and Acceleration on an Inclined Plane?
- swede5670
- · Replies 5 ·
Calculating Angular Speed of Playground Merry-Go-Round
- Husker70
- · Replies 1 ·
Thought Experiment (Jumping of a building)
- asc3nd
- · Replies 1 ·
How long does it take for the sun to move its own diameter?
- shaka23h
- · Replies 4 ·
Need help with projectiles launched at an angle
- austin1250
- · Replies 3 ·
Calculate Torque: Homework Solutions
- halo9909
- · Replies 1 ·
Conservation of Energy equation help
- MentalScrew
- · Replies 3 ·
Force to Lift 10 Bags of Soil (185N each)
- halo9909
- · Replies 1 ·
A couple of projectile trajectory-related questions
- FlyinDutchman
- · Replies 1 ·
Solving Watts Units: V/m From H/m, m/s, W/m^2
- tony873004
- · Replies 3 ·
Find time of freefall based on little knowledge
- Planefreak
- · Replies 1 ·
Where Should the Pivot Be Placed for Balance on a Seesaw?
- uno
- · Replies 4 ·
Determining angle from initial velocity and distance
- Planefreak
- · Replies 2 ·
How to Calculate Wind Pressure on a Wall?
- jackamo321
- · Replies 4 ·
Solving Rotational Kinematics: Moment of Inertia & Energy
- Awwnutz
- · Replies 4 ·
Will the Box Move on a Braking Truck? Mathematical Justification Required
- tonya
- · Replies 3 ·
Induced Voltage Calculation for Stick in Magnetic Field B
- Petkovsky
- · Replies 3 ·
Understanding Relative Angular Velocity and Acceleration in Rotating Bodies
- da_vinci
- · Replies 6 ·
Experimental physics histogram problem
- Ertosthnes
- · Replies 1 ·
Block Slides Down Giant Globe in Italy
- soupastupid
- · Replies 4 ·
What is the Required Pressure Difference to Heat 2 Moles of Gas?
- bap902
- · Replies 2 ·
Two forces act on a object with different magnitudes and direction
- qtgrl120
- · Replies 1 ·
What is the Normal Force on Tires in a Banked Curve with Friction?
- nns91
- · Replies 2 ·
What is the x-value at which the body's velocity is 5.0 m/s?
- B-80
- · Replies 3 ·
How to Calculate Tension and Acceleration in a Frictionless Pulley System?
- Miss1nik2
- · Replies 3 ·
Nonuniform circular motion toy train
- Jennifer001
- · Replies 1 ·
What is the Final Momentum of Three Colliding Balls?
- ScullyX51
- · Replies 1 ·
What are the forces acting on a ball falling through a liquid?
- tachu101
- · Replies 6 ·
Finding acceleration of elevator using mass
- mjolnir80
- · Replies 4 ·
How Does Frequency Variation Affect RMS Current in an AC Circuit?
- alexmahone
- · Replies 4 ·
How Do You Calculate the Total Energy of a Geosynchronous Satellite?
- ND3G
- · Replies 7 ·
Height of a Cliff (Only time Given)
- PhysGoat
- · Replies 2 ·
Solving Two Worlds Spinning: Calculating Tension (T) in String
- soupastupid
- · Replies 1 ·
Calculate Average Blood Speed with Volume Flow Rate | Physics Problem Help
- diamond_dust
- · Replies 1 ·
How to find Density/ Radius of planetesimals
- Cherrio
- · Replies 7 ·
Power problem - finding altitude change
- apang42
- · Replies 9 ·
Two Oxford Admissions Questions, Pedulums and Aircraft
- alex3
- · Replies 2 ·
Finding the Ratio of Electron to Proton Speed in Beta Decay
- tater08
- · Replies 3 ·
Light scattering (rayleigh scattering)
- spaghed87
- · Replies 5 ·
Kinetic Energy Dissipation in a Colliding System
- tater08
- · Replies 3 ·
Jumping impulse physics homework
- keemosabi
- · Replies 4 ·
Velocity Of An Object Accelerated By A Spring
- fcv33
- · Replies 1 ·
How Do You Calculate Bullet Acceleration in a Rifle Barrel?
- tjh855
- · Replies 3 ·
One force represented along an x-axis
- blakester
- · Replies 2 ·
Bullet penetrating a block problem
- mjolnir80
- · Replies 4 ·
Force of impact during collisions
- smiling_bug44
- · Replies 3 ·
Elastic collison of 2 moving object
- HelloMotto
- · Replies 2 ·
Currents in Parallel Wires for Magnetic Attraction
- nckaytee
- · Replies 17 ·
Conservation of momentum and astronaut
- ScullyX51
- · Replies 2 ·
Revolutions of and Electric Drill
- uno
- · Replies 2 ·
Angular speed of earth in its orbit
- smw1016
- · Replies 2 ·
Conceptual work/energy question
- Inertialforce
- · Replies 2 ·
Equivalent capacitance in complex circuit
- quietriot1006
- · Replies 2 ·
Different Notations of Direction
- jwj11
- · Replies 1 ·
Master Newton's Laws with These Challenging Practice Problems
- the whizz
- · Replies 3 ·
Will stacked blocks move together or slip when pulled?
- lax1113
- · Replies 6 ·