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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Dynamics - Relative velocities in rigid bodies
- kdm06
- · Replies 3 ·
Minimum Horsepower for Dragging a Box at a Given Speed
- engineer2010
- · Replies 2 ·
Forces and Power: 18.5 HP to Drive 2320 kg Auto at 62.0 km/h
- odie5533
- · Replies 2 ·
Calculating Total Energy of A and B Nuclei in Center of Mass Frame
- azatkgz
- · Replies 10 ·
How Does a Particle's Motion Change Direction and Velocity Over Time?
- mooneh
- · Replies 1 ·
Acceleration From Earth's Rotation
- odie5533
- · Replies 2 ·
One-Dimensional Motion, Bullet-through-a-board-type question
- 88elephants
- · Replies 3 ·
Solving Mass of 2nd Disk with Angular Momentum
- map7s
- · Replies 7 ·
Acceleration Question* * (Physics 11)
- wonton1017
- · Replies 2 ·
Electric Field in center of half spherical shell
- yevi
- · Replies 6 ·
What Forces Create Equilibrium at Point P?
- ilkjester
- · Replies 3 ·
Relative velocities of rigid bodies
- kdm06
- · Replies 2 ·
Parcel falls from car roof after collision with wall
- whitestrat69
- · Replies 7 ·
Why does a finger in the middle of a spinning fan trace a larger circle?
- unique_pavadrin
- · Replies 2 ·
Solving Induced EMF Problem with Jordan's Help
- Jordanosaur
- · Replies 1 ·
Wave velocity at different points on a string
- dtesselstrom
- · Replies 8 ·
Diving board and torque problem
- Bob Loblaw
- · Replies 9 ·
Yo guys how do i graph acceleration
- aaquib
- · Replies 2 ·
Tungsten filament-finding length of coil
- laural
- · Replies 1 ·
Collision between two balls physics problem
- chaotixmonjuish
- · Replies 16 ·
Moment of inertia of spherical shell problem
- karnten07
- · Replies 2 ·
Rotational kinetic energy of a bike wheel
- Bob Loblaw
- · Replies 9 ·
Calculating the Force of a Fist on a Glass Bottle
- jaded18
- · Replies 6 ·
Finding pendulum bob height at maximum swing angle
- vertabatt
- · Replies 3 ·
How far does the car skid before coming to a rest
- alex7298
- · Replies 18 ·
Fluids problem - gauge pressure
- CurtisB
- · Replies 7 ·
Average force on a 1.4 kg ball bouncing off the ground
- petern
- · Replies 6 ·
Newton's Laws and the coefficient of kinetic friction
- petern
- · Replies 6 ·
What Is the Potential Energy at Point B?
- Yuravian
- · Replies 14 ·
Calculating the Time of a Bullet's Flight from a Rifle Aimed Horizontally
- spirit2014
- · Replies 1 ·
Question on circular motion and Newton's laws
- excel000
- · Replies 3 ·
Calculating Distance and Velocity in a Moving Object Scenario
- nblu
- · Replies 2 ·
Just had a Test and I could not get this one
- Saladsamurai
- · Replies 8 ·
Doppler Effect in Circular Motion
- confusedinphys
- · Replies 1 ·
Freuuency: Variations of a String
- vertciel
- · Replies 3 ·
A Simple Mechanics Problem: Help with Calculating Forces and Energy
- ken62310
- · Replies 1 ·
Amusement park ride (circular motion)
- ~christina~
- · Replies 3 ·
Ball rolling up a ramp to demonstrate conservation of energy
- mass835
- · Replies 4 ·
Centripital acceleration (electron movement)
- ~christina~
- · Replies 4 ·
Solving the Unstoppable Coyote's Speed Challenge
- bkoz316
- · Replies 1 ·
Finding instantaneous velocity from a position-time graph tangent
- mooneh
- · Replies 5 ·
How Is Maximum Velocity Calculated for a Mass on a Spring?
- camherokid
- · Replies 2 ·
A fireworks rocket is launched vertically upward at 40 m/s
- BMW25
- · Replies 3 ·
How Deep Can a Snorkeler Dive with a 1/20 Atmosphere Lung Pressure Difference?
- thatgirlyouknow
- · Replies 3 ·
How High Does a Rocket Go If It Accelerates for 4 Seconds?
- bkoz316
- · Replies 1 ·
Electric Field/Electric Potential (Gradient Notation)
- PFStudent
- · Replies 4 ·
Kinetic Energy of a hydrogen electron
- physstudent1
- · Replies 1 ·
Circular Motion of a wire on a plane
- atavistic
- · Replies 2 ·
Planetary motion the mass of the sun
- prospec
- · Replies 1 ·
Van de Graff Current: Solving Homework Equation
- Armada420
- · Replies 2 ·
What is the Coefficient of Friction for a Braking Car with Given Parameters?
- camherokid
- · Replies 4 ·
Solving a Toy Gyroscope Physics Problem: Mass, Moment of Inertia, and Precession
- gills
- · Replies 3 ·
Water manometer to measure change in pressure
- BlueSkyy
- · Replies 1 ·
Electric force on between 2 rods
- ngkamsengpeter
- · Replies 5 ·
Coefficient of kinetic friction of skis
- Kster
- · Replies 1 ·
What is the weight on a planet with twice the mass and radius of Earth?
- pinkey
- · Replies 13 ·
Gravitational motion usingly earths radius
- zelphics
- · Replies 43 ·
Colliding particles with equal masses with given elasticity
- Superfluous
- · Replies 2 ·
What happens to brightness when a bulb burns out in parallel and series circuits?
- urszula
- · Replies 5 ·
How to Calculate 1.23 ± 0.03 + Pi?
- Grapz
- · Replies 1 ·
How Long Does a Sonar Signal Take to Return from the Ocean Floor?
- Spookie71
- · Replies 1 ·
Forces Exerted by 1kg, 2kg, and 3kg Blocks
- ideefixem
- · Replies 13 ·
Spring Force and Acceleration with Friction
- Adrianw2
- · Replies 10 ·
Find Gravitational Force Component on Inclined Plane - 388.5 N, 36.1°
- arsnmilan4
- · Replies 4 ·
Tension in Cables Supporting a Watermelon on Scaffolding
- galuda
- · Replies 5 ·
Natural frequency of a spring(self-weight only)
- paddydolly
- · Replies 9 ·
Find torque of a ball on the end of a light rod
- mathcrzy
- · Replies 4 ·
Cube suspended in liquid - find tension
- Saladsamurai
- · Replies 13 ·
Understanding Average Speed Calculations
- rcmango
- · Replies 3 ·
Electric and Magnetic field relationship
- Tareth
- · Replies 5 ·
Simple harmonic motion of ornament on tree
- azila
- · Replies 2 ·
Physics Giancoli Ch 5 # 21 Determining mu of banked curve
- NewbiNewton
- · Replies 9 ·
Easy change in direction question
- rcmango
- · Replies 2 ·
How Does Quadrupling Playback Speed Affect the Mach Number in Film Effects?
- Idioticsmartie
- · Replies 1 ·
Pebble in a rolling tire - finding velocity and acceleration
- gills
- · Replies 11 ·
What Minimum Force is Needed to Lift a Wheel Over an Obstacle?
- Destrio
- · Replies 1 ·
How Do You Solve Incline and Spring Problems in Physics?
- Draco
- · Replies 13 ·
Atwood machine with three tensions: T1, T2, and T3
- Vanessa23
- · Replies 3 ·
Current in relation to magnetic fields and velocity
- Nuru
- · Replies 1 ·
How Do You Calculate the Motion of a Pebble in a Rolling Tire?
- HeLLz aNgeL
- · Replies 4 ·
Maximum height of each ball after elastic collision
- Paulbird20
- · Replies 6 ·
How Much Work is Required to Compress a Spring in Specific Scenarios?
- relskid
- · Replies 1 ·
Finding the moment of inertia of a wheel with a hanging 15 kg mass
- ace214
- · Replies 2 ·
What is the New Speed of a 15,500kg Train?
- princessfrost
- · Replies 1 ·
How Does Emptying Sand Affect a Balloon's Acceleration?
- Izzybee
- · Replies 3 ·
Bullet passing through block in ballistic pendulum
- hibachi7
- · Replies 1 ·
Maximum speed for a car rounding a flat curve with friction
- sbot
- · Replies 1 ·
Finding the mass of a hockey puck - inertia
- crewrules101
- · Replies 2 ·
Do photons have to accelerate to the speed of light
- indigojoker
- · Replies 5 ·
Calculating Instantaneous Speed of C.M. of a Stick
- Microzero
- · Replies 20 ·
Finding resultant vector R = A + 2B - C using vector addition
- Bensky
- · Replies 3 ·
Two masses on table and one hanging over pulley with friction
- Izzybee
- · Replies 5 ·
Disk with constant angular acceleration: 7.0 to 18 rev/s in 83 revolutions
- shell4987
- · Replies 1 ·
Centripetal Ride: Chain Rated@3000N - Will it Hold?
- kevi555
- · Replies 2 ·
Is Snell's Law Misleading in Refraction Calculations?
- sinz
- · Replies 4 ·
Protecting an egg dropped from 40 feet with cardboard and tape
- fitz09
- · Replies 11 ·
Tangential acceleration in circular motion with a(t)=0.5t
- pecosbill
- · Replies 8 ·
Solving a Puzzling Lift Problem: Net Upward Force on the Man
- happyjoe
- · Replies 2 ·
Rank Bulbs A-F: Brightest to Dimmest
- skli
- · Replies 3 ·
Finding true temperature from miscalibrated thermometer readings
- poloboy
- · Replies 4 ·