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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A 3.0 g coin moving to the right at 26.0 cm/s makes an elastic head-on colli
- lettertwelve
- · Replies 5 ·
Find the Second Resonant length of an air column
- Spookie71
- · Replies 3 ·
Why does a pencil sometimes jump backwards when a mass drops on it?
- Zoe-b
- · Replies 5 ·
Average force on ball rebounding from 30m drop to 20m height
- Roze
- · Replies 12 ·
Bicycle wheel with two radii: will it move forward or backward?
- olga11
- · Replies 15 ·
Determine the kinetic coefficient of friction
- EP
- · Replies 11 ·
Hydraulic Piston on te bottom of a hill
- jenha14
- · Replies 1 ·
How Do You Calculate Angular Acceleration of a Disk?
- jonnyboy
- · Replies 2 ·
Signs associated with angular momentum
- cardinalboy
- · Replies 4 ·
Oscillatory motion and Hooke's law
- tarzanna
- · Replies 1 ·
Average acceleration race horse problem
- galuda
- · Replies 4 ·
How Do You Calculate Electron Mobility in Copper?
- Staudinger
- · Replies 1 ·
How Can I Solve These Vectors and Kinematics Exam Problems?
- sabah
- · Replies 1 ·
Swinging on a rope minimum horizontal speed
- fire765
- · Replies 4 ·
Simple Ladder leading against a vertical wall become complicated.
- dr3vil704
- · Replies 7 ·
How Does Sir Lost-a-Lot's Quest Impact the Forces on the Drawbridge?
- eightbrown8
- · Replies 1 ·
Forces on a ruler balanced with a hammer hung from a string
- opqpop
- · Replies 1 ·
Doppler effect and Ultrasound waves
- mathcrzy
- · Replies 2 ·
Force and Momentum of diving board
- JLPhysics
- · Replies 1 ·
Inelastic Collision of an object Problem
- fire765
- · Replies 4 ·
Melting Ice with a Carnot Engine
- xinlan
- · Replies 1 ·
Image distance for star reflection in concave mirror with 1.70 m radius
- rhxoehwhfh
- · Replies 3 ·
Work done on the Earth by the Sun
- nothing123
- · Replies 2 ·
Calculating Gauge Pressure Have I worked it correctly?
- predentalgirl1
- · Replies 1 ·
Albert and the Photoelectric Effect
- Garen
- · Replies 3 ·
Image speed relative to Dubbie moving toward and away from a mirror
- rhxoehwhfh
- · Replies 4 ·
Understanding Image Formation in Concave Mirrors
- rhxoehwhfh
- · Replies 2 ·
Work done pushing an 80 N crate up a frictionless 30° slope
- dominus96
- · Replies 2 ·
Finding forces on ruler balanced with hammer on string
- opqpop
- · Replies 1 ·
What Are the Final Speeds of Billiard Balls After a Perfectly Elastic Collision?
- VanKwisH
- · Replies 1 ·
Perfectly inelastic collision (distance)
- complexc25
- · Replies 2 ·
What is the efficiency of the engines?
- Lyphta
- · Replies 3 ·
When does an object start sliding as one end of wood is lifted?
- mrkrupa
- · Replies 28 ·
Torque Question airplane wheels
- wannabenerd
- · Replies 1 ·
7.0 g bullet embedded in 3.5 kg pendulum bob with 8.0 cm rise
- lettertwelve
- · Replies 3 ·
Find the maximum height of a rocket fired vertically
- galuda
- · Replies 2 ·
Solving a Particle's Spiral Orbit under Central Force
- Varnson
- · Replies 2 ·
What is the difference in your reflection when moving at the speed of light?
- olga11
- · Replies 15 ·
Quick easy graviational problem
- Demin
- · Replies 3 ·
Compute Work Done by Air: 103kPa to 101.3kPa
- Saladsamurai
- · Replies 2 ·
Finding Earth's orbital period from mass and distance
- Demin
- · Replies 3 ·
Entropy vs Temp graphfind Volume?
- Roger Wilco
- · Replies 6 ·
Angular frequency of a pivoted plank with spring
- myoplex11
- · Replies 2 ·
How Fast Can Neutron Stars Spin Before Losing Surface Material?
- kim3648
- · Replies 5 ·
What is the Absorbed Dose of Radiation for Ingested Radioactive Material?
- Red88
- · Replies 2 ·
How Much Gold Is in the Alloy by Mass?
- myoplex11
- · Replies 1 ·
Maxwell's relations (thermodynamics): validity
- plmokn2
- · Replies 2 ·
The distance (not horizontal nor vertical) of a rock traveled in a projectile
- yuki_meiseki
- · Replies 3 ·
How Do You Calculate Angular Frequency in Simple Harmonic Motion?
- myoplex11
- · Replies 1 ·
How to Calculate Gauge Pressure to Compress Water?
- predentalgirl1
- · Replies 1 ·
Total distance and time for a bouncing ball with coefficient of restitution
- ZincPony
- · Replies 17 ·
Solving the Problem of Calculating Force and Torque on a Door
- asura
- · Replies 2 ·
Finding surface gravity on Titania given mass and radius relative to Earth
- envoystud
- · Replies 4 ·
Solving Light and Lenses Questions: Focal Length, Magnification, Distance
- dranseth
- · Replies 1 ·
Energy Problem involving simple harmonic motion
- myoplex11
- · Replies 6 ·
Density, specific gravity, and uniformly accelerated motion
- Trinakins
- · Replies 6 ·
How far does a baseball player slide before coming to rest at third base?
- theredlight
- · Replies 2 ·
Why doesn't the potential energy ratio match the bounce heights in the AstroBlaster toy?
- agentorange812
- · Replies 4 ·
Angular velocity of a diving diver using conservation of angular momentum
- jayty22
- · Replies 1 ·
Induced EMF: Solenoid in Square Loop
- triplebeem1
- · Replies 2 ·
Relative uncertainty implied by significant figures
- Noor123
- · Replies 6 ·
How can I design a stable spring launcher for my ISU project?
- rainbows
- · Replies 1 ·
Calculating the Speed of Water Exiting from a Sprinkler
- bww
- · Replies 1 ·
How Does Coulomb's Law Determine Force in a Charged Square Configuration?
- v13tn1g
- · Replies 1 ·
What Forces are Involved in Torque and Equilibrium Problems?
- odie5533
- · Replies 4 ·
Torque and Power (looks pretty simple)
- odie5533
- · Replies 2 ·
What Happens to the Center of Mass When a Penguin Moves on a Sled?
- keltix
- · Replies 8 ·
Projectile launched at 20m/s to hit target 20m away at 5m height
- Petkovsky
- · Replies 2 ·
Hot cup of delicious Radium Water
- Badger
- · Replies 13 ·
How Do You Correctly Rearrange the Equation d=vt+at^2/2 to Solve for a?
- xCanx
- · Replies 2 ·
Ap physics at my highschool gave me a hard question
- chyle
- · Replies 2 ·
Calculating Magnetic Field Strength for Parallel-Plate Capacitor
- spacemanrussell
- · Replies 3 ·
What is causing the discrepancy in the bullet momentum problem?
- Kites
- · Replies 7 ·
Calculating Average Power in a Car's Engine
- FatCat0
- · Replies 13 ·
Cricket jump impulse with 20g mass and 2.55m range
- odie5533
- · Replies 3 ·
Where does the RC time constant equation come from?
- akj_akj_akj
- · Replies 1 ·
Understanding Torque: Is it a Constraint for Motor and Generator Systems?
- seang
- · Replies 5 ·
Circular Motion and Gravitation of a star
- Carpe Mori
- · Replies 2 ·
Pressure amplitude and force on eardrum from 124.5 dB sound wave
- Jtappan
- · Replies 1 ·
Fluids and pressures (artery question)
- Cypripedium
- · Replies 4 ·
Calculating Resistive Force on Styrofoam Dropping from 2.00m
- Gear300
- · Replies 3 ·
Understanding Bullet, Block, and Kinetic Energy in a Loop-the-Loop System?
- Dorney
- · Replies 2 ·
Inelastic Collisions and Dissipation of Energy
- chiurox
- · Replies 8 ·
Calculating Speed Needed to Break a Parachute with Nylon
- oscarwyatt
- · Replies 1 ·
Torque and paralle-axis theorem - question
- Niles
- · Replies 3 ·
Photon emissions from hydrogen
- natugnaro
- · Replies 3 ·
How many photon emissions from hydrogen dropping from n=5 to ground?
- natugnaro
- · Replies 5 ·
Easy Question- cant seem to get it
- spacemanrussell
- · Replies 1 ·
3 explanations of comet velocity. OK?
- catkin
- · Replies 5 ·
How Do You Calculate Pressure Amplitude and Force on an Eardrum from dB Level?
- Jtappan
- · Replies 1 ·
Calculate the mass of the air in the cylinder
- lunarskull
- · Replies 7 ·
Lagrangian for two masses hung by strings with rigid rod constraint
- bamftyk
- · Replies 1 ·
Calculating Sound Intensity 24 m from a Loudspeaker
- Jtappan
- · Replies 1 ·
How Does Playing Alone Affect a Violinist's Sound Intensity Level?
- Jtappan
- · Replies 1 ·
Calculating Force from Atmospheric Pressure on Sheila's Palm
- Gamer_Hedwig
- · Replies 4 ·
Circular Motion and angle alpha
- Carpe Mori
- · Replies 4 ·
Motion of an object attached to a spring
- myoplex11
- · Replies 3 ·
Can You Calculate This Formula Using Given Values?
- Goosey23
- · Replies 5 ·
Calculating Sound Energy from Isotropic Loudspeaker
- Jtappan
- · Replies 1 ·
Completely Elastic Proton Collision
- akatz
- · Replies 6 ·