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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What is the Final Velocity of Cart A After an Elastic Collision?
- SherBear
- · Replies 12 ·
Spring launches 0.1kg ball: kinetic energy, momentum, collision
- bobo2210
- · Replies 5 ·
How Does a Compressed Spring Affect a Ball's Motion and Energy?
- bobo2210
- · Replies 4 ·
Rip time of a string or thread pulled from both sides
- ninuzzo
- · Replies 8 ·
Dynamics. Inclined plane with friction coefficient
- Pepealej
- · Replies 5 ·
Coordinate System-Spring Vertical
- samtouchdown
- · Replies 8 ·
Spinning Top on a Frictionlesss Surface
- CSGuy123
- · Replies 8 ·
Relativist Addition of Velocities
- jgens
- · Replies 1 ·
Calculating Area Under a Curve with Multiple Springs
- Bashyboy
- · Replies 10 ·
How Far Will the Block Travel Up the Incline After Spring Release?
- Syrus
- · Replies 3 ·
Deflection due to Magnetic Field
- Alouette
- · Replies 1 ·
Finding the Center of Mass of a Man-Boat System
- InertialRef
- · Replies 1 ·
How Do I Calculate the Index of Refraction in a Prism?
- mikeyplus10
- · Replies 1 ·
Why is the terminology for n-p type semi-conductors different from convention?
- Dranzer
- · Replies 1 ·
Calculating Torque on an Apple: Fx, Fy, Fz
- Weatherwizard
- · Replies 1 ·
Solving 2 Spring Questions: Max Compression and Work Done
- Sasor
- · Replies 2 ·
Electromagnetic Induction (EMI)
- purple_prize
- · Replies 7 ·
Not intuitive-friction causes motion?
- samtouchdown
- · Replies 4 ·
Find induced emf (among other things) in this current + motion
- 1MileCrash
- · Replies 3 ·
Proving 3/4 is Infimum of A: A = { x^2 +x + 1 }
- mercuryman
- · Replies 2 ·
Question on the relationship between intensity of sound, amplitude and 1/r^2
- aznking1
- · Replies 3 ·
Sigma Plus Particle,baryon, question
- trot
- · Replies 1 ·
Calculating Rotational Speed on a Giant Wheel
- Ishida52134
- · Replies 9 ·
What is the Direction of Frictional Force in Pure Rolling?
- utkarshakash
- · Replies 4 ·
How Does Water Rotation Affect Moment of Inertia in a Cylindrical Tube?
- utkarshakash
- · Replies 6 ·
[Worksheet] Horizontal/Vertical components + other
- Torald
- · Replies 4 ·
Intensity from the double slit.
- sg001
- · Replies 3 ·
Contradiction between equations of angular momentum
- Karol
- · Replies 7 ·
Distance between two ships with changing bearing angles
- peripatein
- · Replies 21 ·
Why Can Tangential Acceleration Vector's Scalar Component Not Be Negative?
- mike 2012
- · Replies 3 ·
Calculating Velocity of Sliding Toolbox on a Slanted Roof
- kgianqu2
- · Replies 2 ·
Bicycle wheel rotation on circular path with 0.877 rad displacement
- snoopy82
- · Replies 1 ·
What Are the Magnetic and Quantum Effects in These Physics Scenarios?
- varld
- · Replies 2 ·
Momentum ~ A 2.0kg blob of clay traveling to the north at
- Silverbolt
- · Replies 1 ·
A 2.0-kg ball is travelling east at 8.0 ~ Momentum
- Silverbolt
- · Replies 1 ·
Why won't my equation work for this pully system?
- LarryJ
- · Replies 1 ·
How Long to Travel 12m at 0.20m/s² Starting at 3.0m/s?
- mat1101
- · Replies 1 ·
Frictionless ramp, constant velocity, find work
- holls14
- · Replies 1 ·
Solving SHM Problem: Stuck Between Textbook & My Attempt
- idir93
- · Replies 4 ·
SohCahToa couldn't figure it out without the angle θ
- NeedHelp12
- · Replies 4 ·
Calculating Satellite Line Splitting in a Sunspot using the Zeeman Effect
- interdinghy
- · Replies 7 ·
Elastic potential energy - springs
- icelated
- · Replies 1 ·
Calculating Total Force on Earth from Venus, Jupiter, and Saturn
- ObviousManiac
- · Replies 4 ·
Elastic Modulus - Probably a dumb question but I can't do it
- Gallows
- · Replies 1 ·
Attractive force between Venus and Sun
- sadifermi
- · Replies 5 ·
Hammer falling from 30° roof with initial speed
- Questions999
- · Replies 1 ·
Speed of a coin sliding on a bench with friction
- liam-galvin
- · Replies 1 ·
Electromagnetic wave in a conductor
- aaaa202
- · Replies 1 ·
Does Dr. No fall off an 18-meter board balanced on a building edge?
- dannyqtee
- · Replies 1 ·
How do odometers calculate distance from wheel revolutions?
- haleh
- · Replies 3 ·
2 bodies travelling towards each other at uniform acceleration
- Nimrod 7
- · Replies 6 ·
Finding friction force when pulling a sled at an angle
- LeonM
- · Replies 5 ·
Swing bridge turned 90 degrees in 120 seconds with three phases
- MMCS
- · Replies 11 ·
Calculating Applied Force for Lifting a 450 kg Car with a Scissors Jack
- Chemlach
- · Replies 1 ·
Rotational dynamic equilibrium problem on an angle
- mx2ko
- · Replies 9 ·
Relative motion of train and platform observer
- CAF123
- · Replies 14 ·
Why must the test charge be infinitesimal if the source charges are fixed?
- Von Neumann
- · Replies 4 ·
What is the displacement of the beam after the medicine ball is thrown?
- InertialRef
- · Replies 2 ·
Accelerating pulley system questions
- Salamon
- · Replies 1 ·
Amplitude of Two Waves in Interference
- Bennigan88
- · Replies 6 ·
Calculating Total Spring Constant of Parallel Springs
- MilenaMath
- · Replies 7 ·
Comet Crashes in Earth Conservation of Energy
- kchurchi
- · Replies 1 ·
Mass-Energy Equivalence and Storng Nuclear Force
- hyurnat4
- · Replies 1 ·
Proving |xy-ab|<ε(|a|+|b|+ε) from bounds on x-a and y-b
- mercuryman
- · Replies 1 ·
Finding the range of a projectile at an angle
- Precepts
- · Replies 10 ·
Finding current using Kirchhoff's circuit rules
- slaufer
- · Replies 3 ·
How do I determine the tipping angle of a box on a truck?
- Zach981
- · Replies 5 ·
How Does Earth's Magnetic Field Affect High-Speed Trains and Planes?
- NeonJay
- · Replies 1 ·
Find The acceleration (Newton's Laws of Motion problem).
- All Pow3r
- · Replies 8 ·
Elastic Collision Momentum Question
- s8on95
- · Replies 13 ·
What force counteracts centripetal force in circular motion?
- student34
- · Replies 3 ·
Centripital Force Turntable (record player)
- jamuses
- · Replies 13 ·
Distance traveled in a circular motion
- Delta Sheets
- · Replies 1 ·
80W of Power Cannot Be Converted to Energy
- thatshowifeel
- · Replies 11 ·
Potential Energy in a vertical spring mass system
- karokr94
- · Replies 2 ·
Determine the period and frequency of SHM
- zaboda42
- · Replies 4 ·
Nonuniform circular motion problem
- doctorjuice
- · Replies 3 ·
Derivation of pressure differences in a stream.
- chingel
- · Replies 3 ·
What is the Magnitude of Vector B When Adding and Subtracting Collinear Vectors?
- Ammar w
- · Replies 3 ·
Kinetic/potential energy with a pulley system
- PhizKid
- · Replies 5 ·
How Do You Derive the Acceleration of a Conical Pendulum?
- corollary
- · Replies 3 ·
Finding tensions in a four-rope system with 80N weight
- mumu94
- · Replies 3 ·
How to calculate the loss of energy of an object
- Msf
- · Replies 1 ·
Rotational kinetic energy / moment of inertia
- bdh2991
- · Replies 1 ·
Roller coaster change in acceleration?
- Arkane1337
- · Replies 3 ·
Calculating Mass in Relativistic Systems
- ttttrigg3r
- · Replies 9 ·
Board and man sliding on ice problem
- Zach981
- · Replies 2 ·
Calculating Average Angular Velocity
- mathnoobie
- · Replies 2 ·
How many potassium ions pass through if the ion channel opens for 1.0 {\rm ms}?
- deborahcurrie
- · Replies 2 ·
Energy and angular motion problem
- bdh2991
- · Replies 2 ·
Calculate the length of the thread -
- engboysclub
- · Replies 4 ·
How Do You Calculate the Center of Mass of a Human Leg?
- flip290
- · Replies 1 ·
How does physics relate to cancer?
- mizz_melanie
- · Replies 3 ·
Two blocks stacked: minimum time to move 5 m without sliding
- pureouchies4717
- · Replies 17 ·
Center of Mass: xcom, ycom Calculations
- vysero
- · Replies 3 ·
Finding acceleration and forces when velocity is constant
- bunk66
- · Replies 1 ·
What Is the Electric Field Inside a Cavity Within a Charged Sphere?
- sloane729
- · Replies 2 ·
How long to catch a baby falling from standing height?
- peripatein
- · Replies 5 ·
Net force from a straight-line resultant?
- IZEP3NT
- · Replies 8 ·
Equations and how to calculate moments and couples?
- DemiDooDah
- · Replies 5 ·