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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Proving a plane Ax + By + Cz = 0 is perpendicular to vector A i + B j + C k
- madah12
- · Replies 1 ·
Why is initial velocity positive or negative when throwing an egg downward?
- Schrodes2011
- · Replies 1 ·
A falling flower pot (kinematics question), just need slight correction
- Sean1218
- · Replies 1 ·
What is the third force needed for equilibrium?
- preluderacer
- · Replies 5 ·
A child trying to catch an ice-cream truck (kinematics question)
- Sean1218
- · Replies 2 ·
Kinematics question (uniformly accelerated linear motion)
- Sean1218
- · Replies 7 ·
Grade 11 Physics: Projectile Motion Calculations
- brain123
- · Replies 4 ·
My rounding is off - can anyone try this?
- jaytm2291
- · Replies 10 ·
Is Tension in a Tow Chain Equal to the Weight of the Car?
- preluderacer
- · Replies 2 ·
Finding acceleration from distance and fall time measurements
- nukeman
- · Replies 3 ·
Need help with 7-question physics assignment due Friday
- nicknaq
- · Replies 3 ·
How Do You Calculate Potential Energy on Each Step of Stairs?
- WMM
- · Replies 22 ·
How Many Waves Does an MP100 Miss in 5 Seconds at 10 SPS?
- jnimagine
- · Replies 3 ·
Calculating the Angle for a Collision of Two Particles
- AnnaSuxCalc
- · Replies 2 ·
Finding minimum angle θ₀ to move a mop head with friction
- DarPodo
- · Replies 9 ·
How Does the Position of the Man Change as He Walks to the Edge of the Boat?
- mohabitar
- · Replies 1 ·
Compton Scattering of Electron
- satchmo05
- · Replies 8 ·
Understanding Vectors: Evaluating Component Relationships
- imapeiceofwod
- · Replies 2 ·
Momentum and Collision Question
- mohabitar
- · Replies 11 ·
Why Neutrinos Rarely Interact With Matter
- KatlynEdwards
- · Replies 1 ·
Three astronauts pushing a 127 kg satellite with three forces at different angles
- fashion_fever
- · Replies 4 ·
Is the Mass Determined by the Slope of an Acceleration vs Force Graph?
- sparko
- · Replies 1 ·
Is Sliding Down a Falling Tree Safer Than Free Falling?
- taloz
- · Replies 4 ·
Solving Projectile Motion: A Building 70.0 m High
- ScienceGirl90
- · Replies 1 ·
Rotational Motion of speed and a car
- kalupahana
- · Replies 4 ·
Frictional forces, Maxiumum Velocity
- reb_01
- · Replies 4 ·
What is the x-component of force on the block due to rope 2?
- ohheytai
- · Replies 1 ·
Velocity and acceleration on a track
- mwhowell
- · Replies 4 ·
Velocity of airplane with crosswind.
- Petrucciowns
- · Replies 9 ·
Special relativity clocks observed from two frames
- wumple
- · Replies 3 ·
How Does Relative Motion Affect Light Travel Time in Special Relativity?
- Sabrewolf
- · Replies 8 ·
Gravitational force, springs, and mass
- dragon162
- · Replies 7 ·
Two Ice Skaters Force On Each Other
- thulling
- · Replies 2 ·
Velocity and acceleration on a running track
- mwhowell
- · Replies 2 ·
Two stacked objects sliding down inclined plane.
- michaelwiggin
- · Replies 4 ·
Finding cable tensions from resultant force on mast using unit vectors
- imapeiceofwod
- · Replies 3 ·
How Does Physics Explain a Paratrooper's Survival After a 370-Meter Fall?
- uchicago2012
- · Replies 1 ·
Acceleration of mass on an incline plane
- gergerger
- · Replies 11 ·
Solving Unit Vectors Problem: Calculate Forces at B
- imapeiceofwod
- · Replies 3 ·
Crate pulled up incline, kinetic energy and speed; picture included
- gap0063
- · Replies 1 ·
Simple Gravity Problem: Finding an Object's Maximum Height
- mwhowell
- · Replies 1 ·
Find current at high/low frequency
- Acuben
- · Replies 2 ·
What does negative slope mean on x-t and v-t graphs?
- mizzy
- · Replies 7 ·
Force on rope for ball in horizontal circular motion
- Telemachus
- · Replies 6 ·
Unit Vector Question. *updated*
- imapeiceofwod
- · Replies 5 ·
How Does Spring Compression Affect Block Motion on an Inclined Plane?
- uchicago2012
- · Replies 3 ·
Angle between Fz and S, picture included
- gap0063
- · Replies 8 ·
Calculating Work Done by Spring Constant k
- bewger
- · Replies 1 ·
Why Can a Spaceship Drift Sideways in Space Without Any Forces Acting on It?
- kikifast4u
- · Replies 5 ·
What Are the Effects of Gravity on a 55.0 kg Ball?
- tica86
- · Replies 6 ·
How Do You Calculate Tension in Two Strings Holding a Mass?
- connie5828
- · Replies 1 ·
When speed of sound is not negligible
- OpticalSuit
- · Replies 2 ·
The Forces present on a system drawn with FBD's
- Mr LoganC
- · Replies 11 ·
How Do You Calculate Current I3 in This Complex Circuit?
- Mikesgto
- · Replies 1 ·
Orbital period and speed of a space shuttle in flight
- kevnm67
- · Replies 3 ·
Unlimited Space Travel: Solving the Relativity Problem
- goldilocks
- · Replies 1 ·
Building a Cheap Faraday Cage in Bedroom
- RFHealth
- · Replies 3 ·
Inital acceleration to free-fall
- nakita22
- · Replies 3 ·
How are Pendulums and Springs Related in Simple Harmonic Motion?
- sponsoredwalk
- · Replies 1 ·
Can the result of ∫1/(1+cos x)² be simplified further?
- redshift
- · Replies 2 ·
Circular Motion - friction and tension problems
- thebrandon
- · Replies 8 ·
Two football players run at each other
- Reicandy
- · Replies 1 ·
Why does doubling both planet masses quadruple gravitational force?
- LoveKnowledge
- · Replies 2 ·
Potential difference across a resistor as measured by a voltmeter.
- kballerina
- · Replies 2 ·
Newtonian Dynamics: Mowing a Lawn
- JennV
- · Replies 5 ·
Calculating the pilot's effective weight at the bottom and top of a circle
- bfpearce
- · Replies 1 ·
Skydiver #1 #2 fall problem, Linear or Quadratic ?
- NamaeKana
- · Replies 8 ·
Conservation of Energy block on a track
- uchicago2012
- · Replies 3 ·
What is the Acceleration Vector of a Passenger on a Ferris Wheel?
- DrummingAtom
- · Replies 2 ·
Solve Atwood System Equilibrium: Find Tension in lbs
- wmrunner24
- · Replies 1 ·
Conservation of Energy find the speed of the blocks
- uchicago2012
- · Replies 1 ·
How Does Spring Force Affect an Object's Position?
- Ben2002
- · Replies 1 ·
Projectile Motion: Solving for Explosion Co-ordinates
- thushanthan
- · Replies 2 ·
How Do You Calculate the Angle Theta1 for Equilibrium in a Two-Cable System?
- wmrunner24
- · Replies 2 ·
Understanding Centripetal and Gravitational Forces in Orbital Motion
- cdotter
- · Replies 5 ·
Can a Baseball Hit at 26 Degrees Clear a 3.8m Fence 120m Away?
- moondawg
- · Replies 4 ·
What are the coordinate direction angles for the resultant couple moment?
- Bismuth
- · Replies 4 ·
Linear Motion at Constant Acceleration Problem
- euphoriae
- · Replies 2 ·
Speed at which diver enters water
- kinganu123
- · Replies 4 ·
Position vector in spherical coordinates.
- vwishndaetr
- · Replies 4 ·
What is the maximum speed of a block attached to a spring with a force of 20lbs?
- JJBladester
- · Replies 7 ·
Finding total vector graphically from three velocity vectors
- mxh91
- · Replies 1 ·
Electric Field from two lines of charge on the y-axis.
- ArtemRose
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Electric Field: Find Distance z Above Line Segment
- leonne
- · Replies 5 ·
Is Zero Torque on a Pivot Point Indicative of Zero Force?
- Sinister
- · Replies 3 ·
Finding Distance Using Coulomb's Law
- thetest
- · Replies 12 ·
What's the Work and Speed of a Particle at Different Positions?
- eventob
- · Replies 6 ·
Understanding Elastic Collisions: Solving for Total Kinetic Energy and Momentum
- nlsherrill
- · Replies 8 ·
Find the Angle of Travel for a Blue Car and Purple Truck Collision
- mohabitar
- · Replies 8 ·
What Is the Correct Expression for the Force Fo in an Inclined Plane Problem?
- wmrunner24
- · Replies 3 ·
Conservation of Kinetic Energy During Collision
- mohabitar
- · Replies 3 ·
What is the Correct Acceleration of a Book on an Inclined Plane with Friction?
- Terraist
- · Replies 1 ·
Pulley problem, find total mass where ther is no acceleration
- vande060
- · Replies 3 ·
Calculating acceleration due to friction without mass?
- Amber_
- · Replies 2 ·
Displacement with constant velocity
- clamb2185
- · Replies 4 ·
What is the force and acceleration in a conical pendulum?
- brmochel
- · Replies 8 ·
Free body diagram for mass M with pulley system
- issacnewton
- · Replies 2 ·
Finding accelerations and tensions in a pulley system with three masses
- awelex
- · Replies 5 ·
Calculating Tension with Kinetic Friction in a Pulley
- limpexowns
- · Replies 2 ·
Relative motion of a swimmer crossing a river
- chengbin
- · Replies 7 ·