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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Solving a Box Sliding Down a 20 Degree Sloped Plane: Finding Acceleration
- dur
- · Replies 17 ·
Eng Mechanics: Resultants of force systems
- Edwardo_Elric
- · Replies 3 ·
How Is the Retarding Torque Calculated in a Rotating System with Friction?
- fiziksfun
- · Replies 1 ·
What Is the Minimum Thickness for Constructive Interference in a Thin Film?
- Joza
- · Replies 11 ·
How Does the Photoelectric Effect Apply to X-ray Tube Mechanisms?
- rey242
- · Replies 2 ·
Light intensity after removing the second polarizer from a three-filter stack
- weathercheck
- · Replies 20 ·
Torque exerted on trap door by rope
- streeter
- · Replies 1 ·
What Is the Average Power Output of an Elevator Motor During Acceleration?
- mkwok
- · Replies 3 ·
At what distance does a cat make a wooden plank tip?
- Mcdeltateta
- · Replies 1 ·
Can I Use a Capacitor to Power My Home Outlet?
- indigojoker
- · Replies 4 ·
Destructive interference and fringes
- Joza
- · Replies 7 ·
Kinetic energy with momentum equation
- ~christina~
- · Replies 4 ·
Change in linear Momentum(rebound)?
- grouchy
- · Replies 2 ·
Box being pulled up a ramp by a horizontal force
- phys101
- · Replies 11 ·
Calculating Force on a Simple Water Squirter Plunger: A1, V1, A2, V2
- Genza
- · Replies 2 ·
Conservation of energy of a sliding block
- anap40
- · Replies 5 ·
Understanding Conventional Current and Electron Flow
- Oerg
- · Replies 2 ·
Gravitation/Average Force Problem
- brendan3eb
- · Replies 1 ·
Blood temperature drop from sweating during exercise
- phobia
- · Replies 2 ·
Box on a ramp: What is the reaction force on the box due to the ramp?
- phys101
- · Replies 2 ·
What Are the Best Physics Logic Puzzles on Forces and Energy?
- Nachore
- · Replies 3 ·
Near Point Without Spectacles: 1m
- SwaggerJohn
- · Replies 1 ·
Final Velocity (involving momentum)
- grouchy
- · Replies 1 ·
Sound wave intensity of elephants
- sun
- · Replies 1 ·
Why does period squared vs. length give a better graph than period vs. length?
- petern
- · Replies 14 ·
Displacement of a car before it stops
- missashley
- · Replies 1 ·
How Much Force Stops a Pole Vaulter?
- sensesfail
- · Replies 1 ·
Painting a Dome with rollerskates
- ~christina~
- · Replies 32 ·
Time When Pendulum Clock is Put on Moon?
- petern
- · Replies 7 ·
What Is the Spring Constant and Velocity of a Box on an Inclined Plane?
- tachu101
- · Replies 8 ·
Work done and rotation of record player
- mattyisphtty
- · Replies 3 ·
What Is the Angular Acceleration of a Steam Engine Flywheel?
- sana masih
- · Replies 1 ·
Rotational kinetic energy of two astronauts connected by a rope
- Noor123
- · Replies 1 ·
Tension Force Direction in Inclined Block Problems
- chantalprince
- · Replies 2 ·
Calculating Average Force of Bullet Impact on Block
- Freaker
- · Replies 3 ·
Find Speed in Centripetal Motion
- petern
- · Replies 6 ·
Rigid body acceleration question
- suspenc3
- · Replies 1 ·
Calculating Force on Pillars: A Physics Moment Question
- jisaac
- · Replies 1 ·
Conservation of momentum spaceship problem
- twotoes777
- · Replies 4 ·
Kinetic energy: car stopping, finding speed of car
- enso
- · Replies 2 ·
Find Tension for Centripetal Motion
- petern
- · Replies 2 ·
Calculating Magnetic Field of Two Wires at a Point (x, y)
- twalters84
- · Replies 3 ·
How many bricks stacked to reach one atmosphere of pressure?
- koolkris623
- · Replies 1 ·
Calculating Wavelength of a Harmonic Wave
- sun
- · Replies 1 ·
How Do You Calculate Total Work on a Car Coasting Downhill in Physics?
- iceman90
- · Replies 4 ·
What Are the Tensions in the Cables When a Crane Lifts a Load?
- iluvschool699
- · Replies 1 ·
Does the parallel-axis theorem work for an axis outside the body?
- Niles
- · Replies 2 ·
Where Has the Missing Energy in a Stretched Wire Gone?
- Iamtoast
- · Replies 7 ·
Friction in the Direction of Motion
- chrisdapos
- · Replies 2 ·
What Distance x Gives the Least Period for a Physical Pendulum?
- ghetto_bird25
- · Replies 1 ·
Momentum of bullet fired into target
- Metalsonic75
- · Replies 6 ·
Force and motion from a graph: acceleration, work, speed and impulse
- tachu101
- · Replies 8 ·
Mechanics: mass on moving slope. no friction
- sweep123
- · Replies 2 ·
Projectile Problem: Distance and Max Height
- GusTu2007
- · Replies 1 ·
Resultant of || forces: Eng mechncs
- Edwardo_Elric
- · Replies 1 ·
Which Block Hits First, Block 1 or Block 2?
- Himanshu
- · Replies 1 ·
Extended Experimental Investigation.
- Arizzle
- · Replies 39 ·
Notation issue with the integration of exponents.
- Fallen Seraph
- · Replies 1 ·
Representing a wave as a complex number.
- Fallen Seraph
- · Replies 6 ·
How to Calculate Force on a Perpendicular Finite Wire Near an Infinite Wire?
- cscott
- · Replies 1 ·
EMF in a small ring moving along the axis of a larger current loop
- captain.joco
- · Replies 7 ·
Weather balloon acceleration with 5.0 kg instruments
- blue__boy
- · Replies 2 ·
Tethebal| problem, radial acceleration, angle of ball orbit
- izforgoat
- · Replies 5 ·
Elastic/inelastic collision - speed?
- rubyred401
- · Replies 5 ·
Max Elongation of Spring in 2 Mass Spring System
- -RooneY-
- · Replies 10 ·
Moon falling from rest to Earth impact speed
- brendan3eb
- · Replies 3 ·
3-dimensional center of mass problem
- brendan3eb
- · Replies 1 ·
Pivoting Rod and Ball - Rotational Dynamics
- DelPopolo
- · Replies 3 ·
How Does Increasing the Mass of the Topmost Particle Affect the Center of Mass?
- brendan3eb
- · Replies 1 ·
Work and Energy of an extreme skier
- chantalprince
- · Replies 12 ·
Trouble calculating the equilibrium of this object
- kjthesandman
- · Replies 4 ·
Inertia of unequal masses on pivoted rod
- motalha
- · Replies 3 ·
Is the Gravitational Constant Always Equal to 6.67*10^-11 in Newton's Law?
- blue__boy
- · Replies 1 ·
Weight of Astronaut on a Centripetal Shuttle
- izforgoat
- · Replies 7 ·
Equilibrium at Constant Velocity
- Tater
- · Replies 1 ·
Fluid and depth of hole problem
- ghetto_bird25
- · Replies 4 ·
Light reflecting between mirrors at 60.5 degrees
- Winzer
- · Replies 6 ·
Vibrating a 75g Bungee Cord: Standing Wave Formation
- strikingleafs01
- · Replies 1 ·
Whats The answer and reason of this?
- sufyanu
- · Replies 1 ·
Vibration and Frequency Questions
- Draco
- · Replies 3 ·
Is Momentum Conserved in a Collision Between Two Charged Planets?
- raman911
- · Replies 1 ·
What is the Critical Angle for Light Passing Through a Contaminated Lake?
- Winzer
- · Replies 8 ·
Angular speed of a falling vertical rod using energy conservation
- 7starmantis
- · Replies 26 ·
Kinetic energy and explosive yield of a 2 km comet impact
- lloyd_lex
- · Replies 1 ·
How does the energy change in a capacitor with variable plate distance?
- chopticks
- · Replies 2 ·
Solving Elastic Collision of Blocks with Masses 12 kg and 6.8 kg
- anyone1979
- · Replies 4 ·
Electric Field of Equilateral Triangle Charge Distribution
- pinkyjoshi65
- · Replies 31 ·
Where Will the Ball Hit the Floor of the Railcart?
- supercali
- · Replies 6 ·
How Is a Child's Swing Speed Calculated Using Energy Conservation?
- bphysics
- · Replies 3 ·
Position vector relation between comet and earth
- karnten07
- · Replies 14 ·
Tension in Cable: Solving Using Trig
- ChaosCon343
- · Replies 1 ·
Modify Radius of Iron for Density Accuracy
- Ryo124
- · Replies 3 ·
Max Electric Field on 4.3mC Ring of Charge: Radius 4cm
- chopticks
- · Replies 4 ·
Overcoming friction and then some.
- anyone1979
- · Replies 6 ·
Finding kinetic energy when a spring is stretched halfway
- anyone1979
- · Replies 6 ·
Deriving the Focal Length of a Concave Mirror
- wiz0r
- · Replies 4 ·
How does a jumping bug affect the rotational dynamics of a uniform bar?
- eeriana
- · Replies 9 ·
Using a Stroboscope to Make a Propeller Appear Stationary
- rcmango
- · Replies 1 ·
Use Newtonian dynamics to find the speed at this position
- Jessikalinphy
- · Replies 2 ·
What is the angular acceleration of each wheel?
- rcmango
- · Replies 6 ·