Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
What is the Radius of an Electron Trajectory in a Magnetic Field?
- 11thHeaven
- · Replies 4 ·
Enthelpy change of an isothermal process
- sachin123
- · Replies 4 ·
Calculate the percentage increase in mass
- ASidd
- · Replies 1 ·
Rotation and varying friction coefficient
- Saitama
- · Replies 20 ·
Calculating Tension in a Moving Rope: A Differential Equation Approach
- sapsapz
- · Replies 22 ·
Average magnitude of force during a 0.4 second impact
- Crushgear64
- · Replies 1 ·
Maximum Acceleration for Crate on Moving Flatbed
- landerson888
- · Replies 2 ·
Engery Conservation in Oscillatory Motion
- Julio Cesar
- · Replies 3 ·
Simple problem about the torque?
- nchin
- · Replies 4 ·
Thin rod at rest gets shot with bullet and rotates? Ang momentum problem? help
- nchin
- · Replies 5 ·
2D completely inelastic collision question
- Hoodoo
- · Replies 6 ·
Projectile Motion Problem: Solution & Explanation
- tomstringer
- · Replies 1 ·
Magnet moved through copper ring
- Padenton
- · Replies 1 ·
Finding Tensions (3 strings and 1 mass)
- Prima
- · Replies 2 ·
Question regarding electric circuits and current
- 950315
- · Replies 7 ·
Work done by friction on potted plant
- Lolagoeslala
- · Replies 4 ·
Calculating Energy Transfer and Work Done by a Crane
- Lolagoeslala
- · Replies 1 ·
Minimum possible kinetic energy in an interaction
- Neutrinogun
- · Replies 2 ·
Box moving up a slope by a force
- BWE38
- · Replies 5 ·
How Does a Car's Momentum Change If Its Kinetic Energy Doubles?
- Lolagoeslala
- · Replies 3 ·
What is the Maximum Height of a Pendulum with Given Initial Conditions?
- 99wattr89
- · Replies 2 ·
Calculating Orbital Periods for Spherical Planets in Orbit
- NasuSama
- · Replies 6 ·
Inelastic collision angular acceleration problem
- llisle39
- · Replies 5 ·
Roller coaster friction problem?
- bohobelle
- · Replies 4 ·
Can someone please explain to me what moment of inertia means?
- riseofphoenix
- · Replies 1 ·
Why Is Lowering a Box Considered Negative Work While Gravity Does Positive?
- Lolagoeslala
- · Replies 2 ·
Fluid Mechanics and SHM question Question
- Swaraj M
- · Replies 1 ·
Determine magnitude and direction of the force exerted on the floor
- cdornz
- · Replies 11 ·
First Order Circuit: Replacing Inductor & Current Source
- Jebus_Chris
- · Replies 5 ·
Distance and direction of one leg of a sailboat sail.
- cdornz
- · Replies 6 ·
Algebra based physics exercise practice
- Julio Cesar
- · Replies 1 ·
Astronomical telescope: derivation - greatest magnification (detail) formula
- jemerlia
- · Replies 1 ·
Energy when going down the escalator
- dawn_pingpong
- · Replies 1 ·
Kirchoff's rules & resistors in parallel
- Flucky
- · Replies 9 ·
Hollow sphere, angular momentum, torque problem? help?
- nchin
- · Replies 3 ·
What is the Largest Nuclear Fission Model?
- dazza95
- · Replies 2 ·
Antoher Irodov's Problem. Could it be a mistake?
- jaumzaum
- · Replies 7 ·
Difficult 2D Kinematics Question
- michaelplease
- · Replies 7 ·
Does the Force Constant of a Spring Remain the Same When Cut into Two Halves?
- projjal
- · Replies 2 ·
Elastic collision problem involving nuclei
- Hoodoo
- · Replies 7 ·
CRO display (involve D.C and A.C)
- 950315
- · Replies 2 ·
Thermodynamics - Adiabiatc Expansion
- kineticwave
- · Replies 9 ·
Solving RC Circuit Problem: Find Capacitance from 40V Voltage
- 54stickers
- · Replies 13 ·
Is the Force Described by F = A(10ai + 3xj) Conservative?
- Ishida52134
- · Replies 7 ·
When and Where Do Planetary Systems Form?
- oldspice1212
- · Replies 6 ·
How Much Ice Melts When Shot with a Lead Bullet?
- Bennigan88
- · Replies 1 ·
Elastic collision and kinetic energy problem?
- LarryJ
- · Replies 6 ·
Stiffness in mass spring system
- Smileyxx
- · Replies 6 ·
Why we multiply charges in the coulomb's law equation
- jonah.seler
- · Replies 4 ·
Small Body on a Sphere loss of contact
- jill2040
- · Replies 5 ·
Solving the Bomb Explosion Problem
- strugis
- · Replies 8 ·
Motion, Finding stopping distance
- TheRedDevil18
- · Replies 6 ·
Finding the inertia with a thin rectangular sheet
- kgianqu2
- · Replies 3 ·
Measuring voltages with Ammeters and Voltmeters
- michela02
- · Replies 13 ·
Using Kepler's Law to find speed of a comet in orbit
- johannaposey
- · Replies 8 ·
Cancelling the Earths magnetic field
- deborahcurrie
- · Replies 6 ·
Dropping a closed loop into a magbetic field
- sgstudent
- · Replies 4 ·
Are overdischarged batteries a fire risk?
- Workout
- · Replies 6 ·
Mass of block given μK and Force?
- Ace.
- · Replies 17 ·
Force Between Masses: Solving Physics Homework Questions
- pleasehelpme3
- · Replies 2 ·
Tricky Torque Problem: Solving for Tension and Understanding Beam Forces
- Arooj
- · Replies 5 ·
Can you deduce the coefficient of restitution from impace force plot?
- mokwana1221
- · Replies 13 ·
How can I calculate air resistance without knowing the reference area?
- jff0404
- · Replies 2 ·
Gravity and torque on balls rolling down an incline
- lsginn
- · Replies 2 ·
Calculating Rotational Parameters of a Rotating Sphere
- mistermangos
- · Replies 4 ·
Physics Net Force Incline problem
- salmanamin
- · Replies 1 ·
Finding molar specific heat at constant pressure
- dinospamoni
- · Replies 3 ·
Force -displacement graph question
- Lolagoeslala
- · Replies 1 ·
What are some project ideas using semiconductor devices and other components?
- Saitama
- · Replies 6 ·
You are standing on top of a building. Two balls are thrown
- valhallast
- · Replies 1 ·
Physics Kinetic and Static fricton problem
- salmanamin
- · Replies 1 ·
Examining Wave Displacement Along a Spring
- trivk96
- · Replies 6 ·
Conservation of energy with kinetic energy and spring
- Lolagoeslala
- · Replies 23 ·
Are My Equations Correct for Kirchoff's Rules?
- Workout
- · Replies 2 ·
Unit vectors and direction cosines
- Ragnarok7
- · Replies 4 ·
Proton velocity(magnitude and direction)
- jason shaw
- · Replies 4 ·
Soliton Solutions in Wave Theory
- Sage Lee
- · Replies 2 ·
Why Is My Physics Professor Giving Contradictory Advice?
- Pork
- · Replies 2 ·
Determine resolution of use by modelling it as single slit
- twinklestar28
- · Replies 5 ·
How to Calculate the Components of Forces and Acceleration in Physics Problems?
- vriti1D
- · Replies 1 ·
Circular motion, unbalanced-balanced forces
- pt20army
- · Replies 2 ·
Kinetic Energy rotational and translational conceptual question.
- bdh2991
- · Replies 6 ·
How to find acceleration of 2 masses on a pulley on slanted plane
- infinitylord
- · Replies 2 ·
Physics of the Acceleration and Inertia of a Front Wheel Drive Car
- Annihilator81
- · Replies 1 ·
How Does the Concentration Ratio of Nitrogen to Hydrogen Change with Altitude?
- jaumzaum
- · Replies 2 ·
Torque on a hammer conceptual question.
- bdh2991
- · Replies 1 ·
What are the steps to solving a velocity-time problem with uniform acceleration?
- 200krisx
- · Replies 1 ·
Solve Flywheel & Torque Homework: Find Torque
- SherBear
- · Replies 2 ·
Simple Optic Resolution Problem/ Rayleigh's Criterion
- bmb2009
- · Replies 1 ·
Concenctric spheres and electron
- masacre
- · Replies 1 ·
Is this the right way to work out this pool ball momentum problem?
- Lo.Lee.Ta.
- · Replies 6 ·
Momentum - velocity due to height
- ngorecki
- · Replies 7 ·
Question about labeling forces and solving for acceleration of a system.
- nontradstuden
- · Replies 3 ·
Motion in two dimention problem
- Ammar w
- · Replies 2 ·
Find Flux Density in Iron Ring: 1A Current, 5cm Length, 200 Turns, 1mm Gap
- circuitaki
- · Replies 20 ·
Newtons Rings: Calculating Refractive Index
- cgraystone
- · Replies 3 ·
Impulsive Reaction: Learn How to Calculate
- Saitama
- · Replies 16 ·
How Do You Calculate Amplitude and Phase in a Damped Oscillator?
- phenalor
- · Replies 1 ·
Calculating Effective resistance
- pratyushag
- · Replies 7 ·
Angular acceleration of the bar
- Saitama
- · Replies 9 ·