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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Atwood Machine Lab calculations
- ~christina~
- · Replies 2 ·
Car accelerating from 70 to 80 km/h in 6 seconds
- Thiendrah
- · Replies 8 ·
Current and Potential difference in a circuit
- Xaspire88
- · Replies 13 ·
6 problems on Conservation of Energy
- chavic
- · Replies 8 ·
Newton's Second Law - Machine Problem
- JeYo
- · Replies 1 ·
How Does Physics Calculate Satellite Orbit Speed and Escape Energy?
- jamagner
- · Replies 2 ·
Prove Attenuation Length = Avg Photon Travel Distance
- strangequark
- · Replies 1 ·
How Far Does a Skateboarder Land from a Ramp?
- ideefixem
- · Replies 1 ·
Electric Field Forces in a Hydrogen Molecule
- asiangrrl
- · Replies 7 ·
What is the sailboat's speed and direction after being hit by a gust of wind?
- ideefixem
- · Replies 3 ·
What is the Maximum Speed of Two Connected Trucks at Maximum Power?
- gills
- · Replies 17 ·
Question that I dont know how to answer
- shadow1010
- · Replies 1 ·
In order to find the recoil velocity of a spring
- jgibbon2
- · Replies 1 ·
How Fast Was the Freight Car Moving Before Hitting the Springs?
- klmartin
- · Replies 1 ·
Distance traveled by a accelerating truck with steel load.
- blackkeys
- · Replies 1 ·
Coefficient of Rolling Friction
- stokes
- · Replies 19 ·
Understanding Newton's Law of Universal Gravitation
- Ecterine
- · Replies 5 ·
How far from the edge of the cliff does the model rocket land?
- kswiss880
- · Replies 5 ·
Rates of pressure and volume change
- coding_delight
- · Replies 1 ·
Space station between Earth and moon with equal gravitational forces
- pinkyjoshi65
- · Replies 18 ·
A mass spring system w/ recoil and Friction ?
- gills
- · Replies 3 ·
How Do You Solve Projectile Motion Problems Without Specific Values?
- wonderlove_525
- · Replies 1 ·
Boat Passenger Velocity on Stairs in 2D Motion Problem
- Enjoi_skater06
- · Replies 1 ·
Block on a frictionless incline
- pcandrepair
- · Replies 3 ·
Spring potential energy when 1 kg and 3 kg blocks separate
- jgibbon2
- · Replies 1 ·
Pilot diving vertically at 310 m/s, maximum 9.0g acceleration
- darewen
- · Replies 3 ·
Frictional force on 43 kg block at rest on 19° incline
- grouchy
- · Replies 1 ·
Tension in a pulley system with two masses
- lilshortwun
- · Replies 1 ·
Find the Moments of Inertia question
- aligass2004
- · Replies 11 ·
Three masses connected by cords over a pulley with different accelerations?
- KMjuniormint5
- · Replies 1 ·
Magnitude of the recoil velocity of the nucleus
- ledhead86
- · Replies 6 ·
This one has bothered me for a while (electric field)
- qz27
- · Replies 4 ·
What Are the Truths About the Center of Mass?
- sheri1987
- · Replies 2 ·
Newton's Second Law Particle Problem
- Seraph404
- · Replies 4 ·
Firecracker shot straight up at 54 m/s
- Bensky
- · Replies 8 ·
Finding coefficient of kinetic friction for spring-launched block
- shell4987
- · Replies 3 ·
Kinetic Energy of Pulley System with Unequal Weights
- sequenced_chaos
- · Replies 9 ·
Gauss's Law/Energy Problem with Concentric Spheres
- asiangrrl
- · Replies 8 ·
Why Does a Falling Particle Take 9/11 of Total Time to Cover Half the Distance?
- PiratePhysicist
- · Replies 3 ·
Counterweight mass for lowering actress on pulley system
- Jayce
- · Replies 5 ·
What Are the Force Components and Radial Acceleration in a Conical Pendulum?
- pcandrepair
- · Replies 9 ·
Car and truck collision with equal mass, combined velocity 28 m/s
- graten2go
- · Replies 1 ·
Work & GPE Homework Solution: m, R, h
- shell4987
- · Replies 1 ·
What is the Torque on an Outstretched Arm with a 21.5 N Weight?
- BuBbLeS01
- · Replies 2 ·
Why do dP/dT, dT/dV and dV/dP multiply to -1 for an ideal gas?
- Niles
- · Replies 5 ·
Calculating Horizontal Force for Displaced Hanging Object
- physicsgirlie26
- · Replies 2 ·
Does tension provide the centripetal force on a rotating object?
- raman911
- · Replies 2 ·
Calculating Maximum Speed and Initial Displacement of a Glider on a Spring
- physicsgirlie26
- · Replies 2 ·
What is the net torque on the pulley about the axle
- aligass2004
- · Replies 4 ·
How Do Rocket Acceleration and Car Forces Calculate in Physics Problems?
- willingtolearn
- · Replies 10 ·
Truck colliding with passenger car - Who will be more hurt?
- bugbug
- · Replies 2 ·
Net gravitational force on ball A from balls B and C
- bigtymer8700
- · Replies 5 ·
What is the initial acceleration of the rod's CM?
- BuBbLeS01
- · Replies 8 ·
Calculating Acceleration on an Inclined Ramp with Two Sliding Packages
- iHate Physics
- · Replies 10 ·
Block on steel table pulled by string: tension and velocity
- parkskier
- · Replies 2 ·
Measuring the wavelength and position of a photon
- zing478
- · Replies 4 ·
What is the velocity of a 178 gram object thrown 97 meters?
- Sevenzzz
- · Replies 5 ·
How do I solve problems involving rotational motion?
- BuBbLeS01
- · Replies 13 ·
Work done by a harmonic oscillator
- Hunt_
- · Replies 4 ·
Rate of revolution for a dryer?
- pcandrepair
- · Replies 13 ·
Banked Highway Curve: Calculating Maximum Safe Speed
- bikerkid
- · Replies 2 ·
Initiating Electron Movement: Magnetic, Gravitational, and Electric Fields
- razvees
- · Replies 1 ·
Five physics problems: friction, thrust, and tension
- soknamal
- · Replies 1 ·
What are the calculations for resistors in parallel?
- sskakam
- · Replies 4 ·
Maximum velocity at the top of a roller coaster?
- pcandrepair
- · Replies 3 ·
How Do You Calculate Relative Speed of Particles Moving Orthogonally in Physics?
- pinky86
- · Replies 1 ·
Answer: Object with Most Mass: Goodyear Blimp
- Wil Biscardi
- · Replies 4 ·
Orbit, and Centrifuge questions
- iHate Physics
- · Replies 5 ·
Acceleration down slope constant or increasing?
- MourningTide
- · Replies 4 ·
Problem with projectiles launched horizontally
- Aracon504
- · Replies 9 ·
Finding height and time from angle and velocity
- wunderbred5
- · Replies 1 ·
How Do You Solve These Two Pressure Calculation Problems?
- Vingen
- · Replies 1 ·
Electron Motion in a Magnetic Field: Kinetic Energy Considerations
- razvees
- · Replies 1 ·
How Many Revolutions Does a Car Make From Rest to a Specific Acceleration?
- feedmeister
- · Replies 1 ·
System with varying mass - String
- Microzero
- · Replies 1 ·
What are some ideas for a physics-based game project?
- fnsac
- · Replies 1 ·
How to Calculate Work on a Satellite in a Gravitational Field
- Momentum09
- · Replies 8 ·
Calculating Revolutions with Changing Acceleration on a Curve
- mashawa
- · Replies 3 ·
Why dimensions can be treated as algebraic quantities?
- 0000
- · Replies 3 ·
What Are the Coordinates of the Circle's Center?
- KMjuniormint5
- · Replies 6 ·
Calculating Net Force from Change in Velocity and Time
- rcmango
- · Replies 5 ·
Why Am I Getting the Wrong Answer in My 2D Motion Projectile Problem?
- Crazystuntsdude
- · Replies 1 ·
Finding gravity through experimental data
- BayernBlues
- · Replies 1 ·
Small Elastic Ball Dropped from Height of 1.1m onto an Incline
- kimjh
- · Replies 3 ·
Calculating Mass of Star from Orbital Distance and Period
- bigtymer8700
- · Replies 1 ·
Distance to cannon from sound and cannonball arrival times
- mike_302
- · Replies 10 ·
Impulse and average force of ball
- polymerase
- · Replies 12 ·
Phase difference in sound wave interference from two sources
- Saladsamurai
- · Replies 2 ·
How Do You Calculate Elevator Cable Tension Accurately?
- polymerase
- · Replies 7 ·
Solving a Lab to Place the Cup for the Ball
- Goodwillie7
- · Replies 1 ·
What Force Must a Window Washer Exert to Ascend at Constant Speed?
- meganw
- · Replies 1 ·
Conservation of Energy and Moment of Inertia
- mit_hacker
- · Replies 2 ·
How Is the Scattered Photon's Energy Calculated in the Inverse Compton Effect?
- MathematicalPhysicist
- · Replies 7 ·
Minimum speed to clear a roof with projectile motion
- klm
- · Replies 5 ·
Does a car braking at -11.2 m/s² hit a hole 30.0 m away?
- cherryrocket
- · Replies 6 ·
2 masses and 3 pulleys/accelaration
- menager31
- · Replies 29 ·
Confusion over an Inclined Plane Question
- Tyler_Cavan
- · Replies 14 ·
Solving the Question of Units for Dropped Mass on Surface
- PAU-L
- · Replies 1 ·
Work done dragging 56.9 kg exercise machine 71.2 m with friction
- map7s
- · Replies 4 ·