Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
How to Calculate Minimum Time for a Sportscar to Travel Half a Mile?
- tronter
- · Replies 2 ·
The angle @ which the particle hits the wall
- ranaroy
- · Replies 3 ·
Minimum force to tip a rectangular block
- soccerj17
- · Replies 7 ·
Finding maximum velocity of a train with non-uniform acceleration
- kajicky
- · Replies 1 ·
What is the repulsive force pushing these two spheres apart?
- srsly
- · Replies 2 ·
Relativistic Density of Cube Moving at 90% Speed of Light
- Xaspire88
- · Replies 7 ·
Calculating the Speed of a Starship Using Time Dilation
- Xaspire88
- · Replies 11 ·
Easy physics questions
- dollafield
- · Replies 2 ·
How Do You Calculate Stress and Strain in a Stretched Copper Wire?
- DizzyDoo
- · Replies 1 ·
How Wide Should Expansion Cracks Be Between Concrete Slabs to Prevent Buckling?
- LostTexan07
- · Replies 1 ·
A stone is dropped from a window 5m high what is its speed
- indy92
- · Replies 4 ·
What is the tension in the string needed to support the hanging box?
- tnguyen628
- · Replies 3 ·
Planetary and atomic systems in N dimensions
- black_squirrel
- · Replies 3 ·
Initial velocity (and momentum)
- shiri
- · Replies 8 ·
How Is the Support Force Calculated on a Diving Board?
- kevinr
- · Replies 6 ·
Jovian Planets, Asteroids, and The Sun-
- ElizebethDylan
- · Replies 1 ·
Harmonics on a Stretched Spring
- BuBbLeS01
- · Replies 3 ·
Why Does a Car's Front Dip When Braking?
- carrie_H
- · Replies 1 ·
How do I express dB/ds in terms of velocity instead of position?
- Hemmer
- · Replies 4 ·
Isn't there anybody that can help?
- Rubidium
- · Replies 2 ·
Calculating Distance Between Double Slits Using the Double-Slit Equation
- pinkyjoshi65
- · Replies 55 ·
Quantizing Radii of a Mass in Circular Orbit
- quickclick330
- · Replies 1 ·
Calculating Weight of Shark Liver for Flotation
- clipperdude21
- · Replies 1 ·
Compass is installed on an iron ship
- indigojoker
- · Replies 2 ·
Centripetal/Gravitational Force
- bullardz
- · Replies 2 ·
Apply conservation of momentum to the collision
- ~christina~
- · Replies 2 ·
How Would Doubling Earth's Mass Affect the Moon's Orbit?
- superlux1234
- · Replies 1 ·
Calculate Min Distance of 2 Electrons Fired at Speed v
- shawshank
- · Replies 3 ·
Specific Heat Problem and Thermos
- RTucekr
- · Replies 1 ·
Conservation of energy of an oxygen molecule
- jincy34
- · Replies 5 ·
How Does Snow Impact Paratrooper Survival Physics?
- gschwarz
- · Replies 1 ·
Speed after body slows down with negative acceleration.
- borovecm
- · Replies 2 ·
Solving for the Right Physics Problem
- neelakash
- · Replies 1 ·
Calculated the pressure of the alcohol
- sun
- · Replies 3 ·
Relative Velocity coordinate system
- tronter
- · Replies 3 ·
Finding the Magnetic Field Gradient for the Stern Gerlach Experiment
- Benzoate
- · Replies 2 ·
How Fast Do a Hockey Puck and Octopus Slide After Collision?
- skins266
- · Replies 5 ·
Two loudspeakers, finding amplitude.
- hydrocodone
- · Replies 2 ·
Calculating Wave Velocity, Mass, and Wavelength of a Guitar String
- BuBbLeS01
- · Replies 8 ·
How Do You Calculate the Center of Mass for Multiple Objects?
- Shadow_C316
- · Replies 5 ·
How Is the Focal Length of an Ocular Determined in an Astronomical Telescope?
- SwaggerJohn
- · Replies 1 ·
Coefficient of friction/ dynamics problem
- lah214
- · Replies 5 ·
Simple Pressure Ballet dancer Problem
- sun
- · Replies 3 ·
Power of Elevator Motor at Cruise Speed
- mkwok
- · Replies 3 ·
Find the distance between the two electrons
- rcs9390
- · Replies 14 ·
How Does Friction Impact Block Velocity in a Multi-Height Path?
- dominus96
- · Replies 8 ·
Calculate the net torque about the axle of a wheel
- ssjdbz101
- · Replies 1 ·
Measuring Earth's circumference from two latitudes
- SolarSystHelp
- · Replies 1 ·
Stopping distance using work-energy theorem with unknown mass
- aquamarine08
- · Replies 9 ·
Spring Problem Solution: Calculating Maximum Movement with Masses Attached
- xcvxcvvc
- · Replies 6 ·
Marbles dropped from elevator. Find height of elevator.
- tronter
- · Replies 2 ·
What is the speed with which she lands?
- kokenwa
- · Replies 1 ·
How Fast Can a Trebuchet Fling a Light Object?
- KvnBushi
- · Replies 1 ·
How Do You Solve a Collision Problem with a Pendulum to Maximize Height?
- donwa83
- · Replies 7 ·
Reflected and transmitted pulses at a spring junction
- BuBbLeS01
- · Replies 3 ·
How Do You Calculate the Hall Potential Difference in a Copper Strip?
- PFStudent
- · Replies 8 ·
Massless ring on rod with spring reflecting a pulse
- skwz
- · Replies 6 ·
What is the submarine's maximum safe depth?
- aligass2004
- · Replies 3 ·
What is the gravitional acceleration near the surface of the star?
- missfearless017
- · Replies 2 ·
Books on light, waves, and emission for final year physics paper
- Oblef
- · Replies 4 ·
Find time and velocity for a body falling 409.5 m from rest
- scotthands
- · Replies 9 ·
What is the average force exerted by the plate on the ball
- mkwok
- · Replies 1 ·
Calculating Angular Acceleration of a Rolling Drum on a Slope
- tronter
- · Replies 2 ·
Converting P=F*d*cos(?)/t to P=Fv
- anastasiao
- · Replies 1 ·
What Are the Frequencies of the Lowest Three Harmonics in a 1.70 m Organ Pipe?
- BuBbLeS01
- · Replies 4 ·
Calculating vrms of Helium in Mixture of Gases
- sheri1987
- · Replies 1 ·
What is the speed of the comet when it crosses the Earth's orbit?
- karnten07
- · Replies 3 ·
How to calculate air density from pressure and temperature
- signorvivek
- · Replies 12 ·
Calculating Speed in Simple Harmonic Motion
- asuslinux
- · Replies 5 ·
Friction on a black on an inclined plane
- sara_87
- · Replies 2 ·
What Are the Possible Frequencies of the Second Xylophone Bar?
- BuBbLeS01
- · Replies 1 ·
How Does a Pulley System Affect Block Motion and Tension?
- Jessikalinphy
- · Replies 1 ·
Energy and Constant Acceleration Problem?
- donwa83
- · Replies 3 ·
Solve Atwood's Machine Problem: Acceleration of Weights
- claudio315
- · Replies 1 ·
Explanation of Bike Odometer Readings for Different Wheel Sizes
- rcmango
- · Replies 3 ·
What is the change in momentum for a baseball striking a fence at a 45° angle?
- meganw
- · Replies 2 ·
Find the moment of inertia of a thin wire of mass
- airbauer33
- · Replies 1 ·
What is the solution to a box with a spring connected to it?
- ~christina~
- · Replies 2 ·
Calculating the Boat's Velocity After a Simultaneous Dive: Momentum Conservation
- honkon
- · Replies 2 ·
Calculating Pressure: Blood Height Above Arm Vein
- clipperdude21
- · Replies 1 ·
Double Slit Experiment glass thickness
- y_chen
- · Replies 1 ·
What is the frictional force acting on a car at 120 mph with a 30 hp engine?
- KatieLynn
- · Replies 4 ·
How do you find the moment of inertia about a centroid of a isoceles triangle?
- manojanand
- · Replies 2 ·
Calculating Bubble Velocity and Work in a Fluid Container | Help with Pressure
- clipperdude21
- · Replies 1 ·
Calculate Acceleration of Crate with Friction & Forces
- MikalP
- · Replies 2 ·
Solving Rotational Motion: Max Speed on Spherical Hill
- mxer101
- · Replies 4 ·
Revolutions and radius of wheel
- rcmango
- · Replies 1 ·
Gauge pressure for water to exit straw, diver depth, floating body density
- logglypop
- · Replies 6 ·
How Fast and High Do Polar-Orbiting Satellites Travel?
- willbland
- · Replies 5 ·
Block sliding down a ramp problem
- ~christina~
- · Replies 14 ·
Discover the Isochoric Process: Calculating Temperature in a Sealed Tank
- gothicsh
- · Replies 2 ·
Average force exerted on ball by wall at angle
- sensesfail
- · Replies 2 ·
Axe swing: acceleration, centripetal force, and impact on target
- sunny123
- · Replies 2 ·
Solving the Circular Motion Puzzle: A Bus Coming to a Stop
- temaire
- · Replies 3 ·
Determine the Angular Acceleration of a Rotating Door
- wchvball13
- · Replies 4 ·
Calculating Force to Raise a Dentist Chair
- BuBbLeS01
- · Replies 1 ·
Centripetal force and acceleration with different masses at same speed
- pyroknife
- · Replies 1 ·
Angular and Linear Motion on a Merry-Go-Round: A Logic Check
- random26
- · Replies 3 ·
Tension of Cable Cars in San Francisco's Cable System
- wafflehouse
- · Replies 1 ·