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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Flywheel moment of inertia(torque)
- Latios1314
- · Replies 3 ·
Experiment, magnetic forces between current-carrying wires
- Cade
- · Replies 5 ·
Estimate induced emf in the coil
- Cade
- · Replies 6 ·
How to Calculate Voltage in a Circuit?
- naivy
- · Replies 10 ·
Why does the force equilibrium equation give two valid solutions?
- ToeNugget
- · Replies 8 ·
What is the stress in the steel ring?
- JustinLiang
- · Replies 6 ·
Power output of cyclist up slope at costant speed
- mrsteve
- · Replies 7 ·
2 second rule true at highway speeds?
- rarouch
- · Replies 4 ·
Find the Volume of an Oil Deposit
- nzashadow
- · Replies 1 ·
Simple Forces Question with Diagram
- lillybeans
- · Replies 5 ·
Force, Friction, Feel like I am not given sufficient info
- 1MileCrash
- · Replies 3 ·
How Do You Calculate Frictional Force on a Block?
- mdawg467
- · Replies 2 ·
How Do You Calculate the Swimmer's Velocity Relative to the Current?
- bionut
- · Replies 1 ·
What is the length of a sector on a ring with radius R and angle dθ?
- GreenPrint
- · Replies 5 ·
Three spheres in equilateral triangle with net gravitational force zero
- GreenPrint
- · Replies 10 ·
Bouncing Ball Problem - 2 Dimensional Challenge Lab
- jambobambo
- · Replies 5 ·
Converting light years to meters and miles
- TrimHopp
- · Replies 4 ·
Simple bug on uniform rod rotational momentum problem
- area5x1
- · Replies 1 ·
How to find displaement, speed and velocity?
- physic geek
- · Replies 1 ·
Three capacitors with switches in series and parallel circuits
- charlies1902
- · Replies 3 ·
Kinematics projectile motion with constant acceleration.
- Crusaderking1
- · Replies 14 ·
Direction and magnitude of the average acceleration
- greydog
- · Replies 8 ·
Murder Mystery Solution using Kinematic Equations
- kstategirl121
- · Replies 1 ·
How Far North Did the Biker Travel in 10 Minutes with Given Velocity and Angle?
- physicsgurl12
- · Replies 8 ·
How can the centre of gravity be outside an object?
- bionut
- · Replies 1 ·
Calculating tension in rotational kinematics
- alco19357
- · Replies 1 ·
Mass in Given Area: 820m x 820m
- Ivan92
- · Replies 5 ·
Basic Harmonic Frequencies Question
- armolinasf
- · Replies 1 ·
Why doesn't (P1xV1)/T1 = (P2xV2)/T2 work here?
- eurekameh
- · Replies 2 ·
What Was the Average Velocity of the Hiker During the Trip?
- physicsgurl12
- · Replies 9 ·
Calculating Work for Climbing Stairs
- jsr219
- · Replies 1 ·
Pendulum (Conservative Forces and Potential Energy
- hawaldko
- · Replies 4 ·
Why is the second pit 4 times deeper if the rock takes twice as long to fall?
- physicsgurl12
- · Replies 8 ·
Potential Dividers and Voltmeters
- Peter G.
- · Replies 3 ·
How to Solve Beam Problems with Step-by-Step Guidance and Free Diagrams?
- Rambo12
- · Replies 1 ·
Super easy driving question - instantaneous acceleration
- physicsgurl12
- · Replies 24 ·
Why is my frictional force calculation wrong for a crate on a 40° incline?
- lalahelp
- · Replies 10 ·
Solving Tension: Helicopter Lifts 2 Crates
- lalahelp
- · Replies 4 ·
Average speed of three drivers in a 24-hour race event
- wtp08
- · Replies 2 ·
Calculating Phase Angle and Amplitude for a Sinusoidal Wave on a String
- armolinasf
- · Replies 1 ·
Pressure against atmosphere pressure
- athrun200
- · Replies 5 ·
Calculating i5 Using Kirchoff's Junction Rule
- MarieWynn
- · Replies 5 ·
A ball acceleration and velocity vectors
- physicsgurl12
- · Replies 4 ·
Why calculus and geometry give different answers for distance from velocity
- ocard232
- · Replies 2 ·
Force: two pulley problem with 3 masses
- runphysicsrun
- · Replies 2 ·
Calculating Time of a Ball Thrown with Velocity 39m/s | No Air Resistance
- physicsgurl12
- · Replies 12 ·
What is the Relationship Between Acceleration and Time for a Skier on a Slope?
- physicsgurl12
- · Replies 11 ·
Solve SHM Problem: 1 Initial Condition
- JNBirDy
- · Replies 4 ·
Loop the Loop (Conservative Forces and Potential Energy)
- hawaldko
- · Replies 5 ·
Can You Win the Puck Game at the Amusement Park?
- barthayn
- · Replies 3 ·
Maximum height of a toy rocket?
- physicsgurl12
- · Replies 25 ·
How Does Gauss's Law Apply to a Charged Filament Inside a Cardboard Cylinder?
- JosephK
- · Replies 4 ·
Magnetic Field Strength of an Electromagnet given variable currents
- thehoyboy
- · Replies 1 ·
Egg drop design: parachute works at 13-15 feet but not at 6 feet
- Rplanas
- · Replies 7 ·
Calculate Tension of String for Ball Bearing Density of 8000kg m^-3
- Wroxley
- · Replies 2 ·
Finding air temperature from sound delay of wood chopping 2 km away
- maki1995
- · Replies 1 ·
Ap physics b question (high school)
- zhanglshi
- · Replies 9 ·
Acceleration car crash g's experienced?
- physicsgurl12
- · Replies 12 ·
What Is the Reason for Reversing hf-hi to hi-hf in Roller Coaster Physics?
- starburst
- · Replies 7 ·
Find Work of a Force Acted on Mass over Frictionless Surface
- mrsteve
- · Replies 3 ·
Drunk driver reaction time increased stopping distance
- physicsgurl12
- · Replies 1 ·
Calculating the tension in a rope
- Otolith
- · Replies 1 ·
Finding Speed, Velocity, Displacement, etc. from velocity-time graphs?
- rayj098
- · Replies 1 ·
Airplane Braking Distance Question
- physicsgurl12
- · Replies 2 ·
Solving Problem on Motions 1 - Vf, Vi, t
- nashvision
- · Replies 1 ·
What is the volume of a bin in feet if it has a volume of 1.5m^3?
- physicsgurl12
- · Replies 5 ·
Energy Loss in Head on Collision of Two Cars w/Same Speed and Mass
- mrsteve
- · Replies 3 ·
Massless Pulley Spring Problem: Solving for Displacement x at Equilibrium
- jofree87
- · Replies 10 ·
Finding net force on a 25 kg box with friction and applied force
- MirrorPhy
- · Replies 6 ·
Kinetic Energy of a Rolling Ball on a Horizontal Plane
- ChuckNorris
- · Replies 1 ·
Inextensible cords passing over frictionless pulleys
- apprentice213
- · Replies 8 ·
Dog jump between 40 m buildings 6 m apart at 8 m/s
- ibysaiyan
- · Replies 8 ·
Kinematics Problem: Solve for a (Vi=0, Vf=Vmax)
- shawli
- · Replies 2 ·
Electric plate has three sections with equal resistivity
- arcticfridge
- · Replies 1 ·
Sliding conductor on a metal rail, with perpendicular B-field
- serverxeon
- · Replies 4 ·
On non linear resistor and how to calculate a fixed resistor.
- physikamateur
- · Replies 4 ·
Angular momentum and energy comparison for circular and elliptical orbits
- conquerer7
- · Replies 2 ·
Lamp at pool bottom: distance before total internal reflection blocks view
- viny
- · Replies 1 ·
Strange Energy/Reaction Question, Scumbag HRK
- conquerer7
- · Replies 1 ·
Spaceship Length in Equal Reference Frame
- DBLE
- · Replies 6 ·
Are my capacitor connections correct?
- pyroknife
- · Replies 17 ·
Proton collides with oxygen nucleus at 90 degrees, find recoil velocity
- iscofield
- · Replies 5 ·
Initial velocity when given distance and acceleration
- Anester
- · Replies 8 ·
How to Add Displacement Vectors Using the Component Method
- elleleeanne
- · Replies 9 ·
Two support forces on tilted cone with attached ring at 21 degrees
- dennis1984
- · Replies 4 ·
What is the magnitude of the acceleration?
- Hockey07
- · Replies 8 ·
Connected blocks on a surface with friction
- Swalker
- · Replies 8 ·
Masses placed on platforms, with compressed spring under them.
- springwave
- · Replies 2 ·
1000 kg weather rocket acceleration and speed at 5100 m
- barthayn
- · Replies 9 ·
A ball thrown up in an elevator.
- maCrobo
- · Replies 18 ·
Motion in 1 dimension easy question?
- pmorshad
- · Replies 3 ·
Banked road (find the minimum radius)
- farleyknight
- · Replies 2 ·
Projectile motion 2-d kinematics
- jehan4141
- · Replies 3 ·
Electric fields, Superposition, and Intervening Matter
- johns120
- · Replies 1 ·
What is the Stagnation Pressure of a Body Moving Through Air?
- rohit_patel
- · Replies 1 ·
Projectile motion firehose question
- Crusaderking1
- · Replies 2 ·
Potential energy for a dipole between 2 infinitely large charged sheets
- Emethyst
- · Replies 1 ·
Normal determination to estimate permeability
- thegroovyguru
- · Replies 1 ·
Finding mass from scale readings at top and bottom of ferris wheel
- Fleet
- · Replies 4 ·
How to find muzzle velocity of homemade launcher
- appleallie
- · Replies 2 ·