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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Finding the weight of a balanced bar on a pivot
- urbanupstart
- · Replies 15 ·
Projectile motion on an inclined plane
- confusedinMA
- · Replies 2 ·
How Do You Calculate the Power Supplied to a Vibrating String?
- industry86
- · Replies 1 ·
How to solve cross products in physics problems?
- uchicago2012
- · Replies 2 ·
Where did this formula come from?
- XwakeriderX
- · Replies 2 ·
Balistic Pendulum Velocity Approximation Formula Explanation and Solution
- Oldblood
- · Replies 3 ·
What is the minimum height for a mirror to see full image?
- Dars
- · Replies 1 ·
Why do different formulae give me different answers for mass of galaxy?
- anyaxo
- · Replies 1 ·
Moment of Inertia of a grinding wheel
- tak08810
- · Replies 10 ·
How do I find force given mass and constant velocity
- Solid
- · Replies 3 ·
Kinetic Energy, Conservation of Energy, Potential Energy, etc
- nicknaq
- · Replies 4 ·
Position vs time quadratic equation variable meanings
- EHSPhysics
- · Replies 1 ·
Two Horizontal Forces Working On an Object
- richard karn
- · Replies 4 ·
How Does Collision Affect Angular Speed in Rotational Motion?
- uchicago2012
- · Replies 1 ·
Size of moon's image formed by convex lens with focal length 0.8 m
- sidge2222
- · Replies 5 ·
Acceleration of masses connected with string, non massless pulley
- AHinkle
- · Replies 4 ·
Newton's second and third law problem
- APysics
- · Replies 3 ·
Why does a secondary rainbow form with reversed colors?
- harp AP 2010
- · Replies 1 ·
Mean drift velocity of a conduction electron in copper.
- Minakami
- · Replies 1 ·
How Do You Calculate the Mass of a Car Using Force and Acceleration?
- Student3.41
- · Replies 3 ·
Fundamental Frequency (String Resonance) - stumped
- Pruzhinkin
- · Replies 4 ·
What is the Contact Force between Boxes in a Horizontal Force System?
- Student3.41
- · Replies 4 ·
Finding center of mass of a right triangle
- vande060
- · Replies 1 ·
Arrow shot from a bow using spring energy
- whoopie88
- · Replies 4 ·
Force in relation to angular momentum
- valvan1
- · Replies 2 ·
Determining Friction of Table with 100g, 75cm, 2s
- PhysicsAdvice
- · Replies 7 ·
Finding initial velocity and distance for a binary star orbit
- jjb123
- · Replies 11 ·
Why is the electric field defined using an arbitrarily small test charge?
- NeuronalMan
- · Replies 2 ·
Forces on a truss (to calculate stress)
- ana111790
- · Replies 5 ·
How to determine direction of forces in free body diagrams?
- Yoriko
- · Replies 3 ·
Two Blocks: Force, Mass, and Acceleration
- runningirl
- · Replies 1 ·
What does the wave function mean for two electrons?
- nobahar
- · Replies 2 ·
Combined cycle gas turbines (solar and natural gas)
- Lumique
- · Replies 2 ·
Two-ball collision and clay projectile without given masses
- Roushrsh
- · Replies 7 ·
Centripetal Accelleration (Rotating object on a string)
- DeviledEgg24
- · Replies 1 ·
Hydrodynamics/Pressure Problem
- tak08810
- · Replies 3 ·
Bullet strikes block on friction surface
- cashflow
- · Replies 2 ·
Finding Height of Thrown Ball: Speed and Time
- Leeee
- · Replies 1 ·
How do velocity-time, velocity-position and velocity-acceleration graphs relate?
- HelpMePlz2010
- · Replies 4 ·
Acceleration of a Tennis Racket
- farrah003
- · Replies 2 ·
How Far Does an Object Travel with Given Friction and Initial Velocity?
- mmiller9913
- · Replies 1 ·
Moment of a 22 kN force about point A with 62° angle
- twenty5
- · Replies 13 ·
Single circular loop of wire filled with a uniform magnetic
- yekidota
- · Replies 1 ·
Finding tension in rope pulling a sledge at constant speed
- mrrocketknigh
- · Replies 4 ·
Does load and pulley count affect mechanical advantage and efficiency?
- NeedsHelp1212
- · Replies 3 ·
Calculating Magnification of a Microscope: Solving the Magnification Problem
- CuteWolf
- · Replies 1 ·
EM: Gauss' law for electricity
- srvs
- · Replies 2 ·
Finding rocket acceleration magnitude and direction from thrust at 50.8°
- Student3.41
- · Replies 1 ·
Problem: Orbital Period - eclipse time - Illumination time ?
- xoureo
- · Replies 1 ·
How much work is done by the engine to get the car up the hill?
- aurao2003
- · Replies 2 ·
How long does a merry-go-round take to make one revolution?
- Aminat269445
- · Replies 1 ·
Solving Part 2 of Homework: Mass, Force, and Acceleration
- rodjav305
- · Replies 14 ·
Dark fringes for single-slit diffraction
- golriz
- · Replies 1 ·
How Far Does a Rock Travel Horizontally When Thrown from a Roof?
- RyanJF
- · Replies 3 ·
Statics ladder and friction less wall question
- TN17
- · Replies 8 ·
How High Will the Mass Go When Launched by a Spring?
- Djhar
- · Replies 12 ·
How Fast Can a Car Go Around a 65m Curve with a Friction Coefficient of 0.54?
- lilphatazngur
- · Replies 1 ·
Friction and Acceleration in Inclined Surfaces
- runningirl
- · Replies 1 ·
Circular motion - finding revolutions?
- wschmidt22
- · Replies 17 ·
Froce Required to Overcome Friction of Two Boxes
- BraedenP
- · Replies 4 ·
How Do You Calculate the Coefficient of Kinetic Friction in a Pulley System?
- oldflandark
- · Replies 1 ·
Calculating Distance Traveled During a 5-Minute Bus Acceleration | Homework Help
- licorice
- · Replies 5 ·
What happens to a gyroscope when carried upstairs?
- areid10990
- · Replies 5 ·
Sum of Normal Modes on a Vibrating String
- MyNewPony
- · Replies 1 ·
Two spheres falling and colliding elastically
- huybinhs
- · Replies 3 ·
What Is the Normal Force in Newtonian Mechanics?
- FakeGeek
- · Replies 6 ·
What Factors Determine the Stability of a Ladder Against a Frictionless Wall?
- goldentrinket
- · Replies 1 ·
Mastering Acceleration: Easily Solve for Time with this Simple Formula
- licorice
- · Replies 13 ·
Potential energy algebra problem
- electr0n
- · Replies 2 ·
Conversion of data when working out ave velocity
- theguy123
- · Replies 3 ·
Applications of the formula A sin x + B cos x = K sin(x + φ)
- Endorser
- · Replies 3 ·
Calculate the net force of space shuttle
- runningirl
- · Replies 1 ·
Conservation of Energy ball of mass
- KatlynEdwards
- · Replies 6 ·
Soldier landing force and stair climbing efficiency
- gamx
- · Replies 9 ·
How High Does the Lighter Ball Rise After Collision?
- JennV
- · Replies 1 ·
Speed of slider on a frictionless 30 m water slide at 25 degrees
- runningirl
- · Replies 11 ·
What Trajectory Does an Apple Take When Dropped in a Decelerating Train?
- Chip90
- · Replies 8 ·
Calculating Angle θ in Rotating Ball at Point P - Energy + Other Stuff
- fauxbeast
- · Replies 2 ·
How Does Quantum Mechanics Calculate Proton Interactions at High Temperatures?
- 876d34f
- · Replies 1 ·
Flux Density of Salt in Horizontal Tube: How Does Advection Affect Transfer?
- kathyt.25
- · Replies 1 ·
Static equilibrium of a window washer
- TN17
- · Replies 1 ·
Astronaut and Wrench Momentum Problem
- ommnomnomnom
- · Replies 2 ·
What Speed Does the Second Car Achieve After a Collision?
- pokeefer
- · Replies 3 ·
Finding the mass of a child in a wagon with friction
- homevolend
- · Replies 7 ·
How Do I Find the Angle of Force in This Scenario?
- homevolend
- · Replies 5 ·
Calculating Force Constant of a Spring
- aishax
- · Replies 4 ·
Determining if force is attractive/repulsive from Energy diagrams
- DrummingAtom
- · Replies 2 ·
Displacement of Water Leaking in a Boxcar
- SilentBlade91
- · Replies 1 ·
Max acceleration experienced by the jumper?
- ohheytai
- · Replies 13 ·
Work and Kinetic Energy of barrel
- ScienceGirl90
- · Replies 1 ·
Launch Velocity for Satellite from Mt. Everest to Orbit Earth
- cubejunkies
- · Replies 7 ·
Rate of Rotation for a Pulley (Question for a Reasoning/Thinking Skills Test)
- vertciel
- · Replies 3 ·
Solving for Time and Max Height of a Kicked Football
- kk727
- · Replies 4 ·
Is the Friction Force Determined by a Suspended Mass and Cart Movement?
- PhysicsAdvice
- · Replies 3 ·
Ice chunk sliding down a 60° roof without friction
- runningirl
- · Replies 2 ·
Tricking Theoretical Thinking Question
- I Like Pi
- · Replies 12 ·
Car turning right: impulse components and average force
- huybinhs
- · Replies 2 ·
Find Acceleration of Sled Pulled by Chuck with 50kg Mass
- Bdurb
- · Replies 3 ·
Finding minimum force to prevent block sliding down inclined plane
- sepah50
- · Replies 3 ·
How Does the Work-Energy Theorem Determine the Initial Speed of a Sledgehammer?
- aishax
- · Replies 5 ·