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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I hope that helps. How far will Lisa compress the spring?
- octahedron
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Why Does Rotating Around the Y-Axis Require Less Work Than the Z-Axis?
- jwxie
- · Replies 1 ·
Solve Vector Plane Problem: Airplane to Lake 250 km Away
- Trooper100
- · Replies 1 ·
Understanding Electric Field and Potential in Capacitors
- lha08
- · Replies 1 ·
Range of wavelength from white light through a diffraction grating
- FLCL
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Rotation problem solved with conservation of energy.
- btbam91
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Magnitude/direction of the ball's acceleration
- 14h54
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Calculating Height of Stone Dropped from Rising Hot Air Balloon
- chuckset
- · Replies 2 ·
Calculating Work, Thermal Energy, and Heat Transfer for Hydrogen Gas
- Shayna
- · Replies 6 ·
Why Newton's third law forces don't cancel out
- Trooper100
- · Replies 9 ·
Calculating Potential Energy Changes in a Roller Coaster System
- Tmtamrak
- · Replies 3 ·
Finding how long a cyclist takes to stop after braking
- chuckset
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What is the temperature at the end of the process ?
- alireza83
- · Replies 2 ·
Capacitors: charge, potential difference and stored energy
- CIERAcyanide
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Elaborating physics concepts for oral exam: 10 statements
- leoblack9
- · Replies 2 ·
Conservation of Momentum and Kinetic Energy in 2D Collisions
- Foghorn
- · Replies 2 ·
Rotational Motion and the Law of Gravity
- Teenytiny1991
- · Replies 1 ·
Calculating the Pulling Force of a 2t Car Over 100m in 10s
- Makara
- · Replies 1 ·
Is zero acceleration constant when there's no net force?
- bstrong1218
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Definition of magnetic flux through a surface at an angle
- ghostbuster25
- · Replies 3 ·
Bullet embedded in rod pivoted at one end
- Shifty
- · Replies 9 ·
Finding kilowatt hours from parallel capacitors
- CIERAcyanide
- · Replies 4 ·
Need a Physics Investigatory topic
- Eutrophicati
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Magnitude of flux through wedding ring
- ghostbuster25
- · Replies 2 ·
Electric field, charged balls, conservation of energy, velocity
- thermocleanse
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Angular speed of merry-go-round
- cdotter
- · Replies 1 ·
Emission in hydrogen atom - difference between electrons and photons
- tramar
- · Replies 1 ·
Finding the direction of a dipole moment
- Porsche911NFS
- · Replies 1 ·
How Do You Calculate the Initial Speed of a Bullet Fired into a Block?
- oadeyemi
- · Replies 3 ·
Conservation of energy of a baseball problem
- hks118
- · Replies 4 ·
Calculating force to accelerate object
- bazzz
- · Replies 4 ·
How Do Radio Frequency Sources Create Interference Patterns?
- nietzsche
- · Replies 1 ·
Relationship between uncertainties
- gdogga
- · Replies 1 ·
Uncertainty with a log function
- sprinks13
- · Replies 1 ·
Calculating Needed Thrust for a Moon Landing
- ashvuck101
- · Replies 4 ·
What is the initial speed of a bullet shot into a block on a frictionless table?
- oadeyemi
- · Replies 7 ·
What Determines the Loss of Contact in a Mass-Spring System?
- Kreyopresny
- · Replies 1 ·
Calculating Acceleration and Final Speed of a Car with a Given Force and Mass
- flower123
- · Replies 2 ·
How to Calculate Force and Tension in a System of Blocks?
- Paymemoney
- · Replies 1 ·
Determining the magnetic torque on a loop
- warfreak131
- · Replies 5 ·
How Do You Calculate Initial Velocity with Angled Projectile Motion?
- Michels10
- · Replies 3 ·
How Does Eccentricity Influence Orbital Speed Ratios in Planetary Motion?
- sheepcountme
- · Replies 1 ·
Mass of Star Using Celestial Mechanics
- ~Sam~
- · Replies 3 ·
Distance and gravitation problem.
- The_Journey
- · Replies 1 ·
Calculating Skydiver's Landing Speed with Constant Retarding Forces
- Paymemoney
- · Replies 6 ·
Question involving rotational motion
- gaobo9109
- · Replies 7 ·
What is the Phase Difference Between Waves at Point R?
- thereddevils
- · Replies 4 ·
What is the beat frequency of two strings with different tensions?
- nietzsche
- · Replies 2 ·
Calculating Rate of Vaporisation: 240 W Body Heat Loss
- roam
- · Replies 4 ·
Calculating Potential Difference and Work in a Parallel Plate Capacitor
- lacunae
- · Replies 1 ·
Where to find 2004 AP Physics C mechanics answers
- key
- · Replies 1 ·
How Do You Calculate the Current in Each Wire When a Charge Moves Between Them?
- yankeekd25
- · Replies 4 ·
Why do the upper and lower potions cancel the magnetic field?
- anonymousphys
- · Replies 1 ·
Discharged electrodes and charges: electric slingshot
- thermocleanse
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How do you calculate Center of mass
- okgo
- · Replies 3 ·
Calculate Equivalent Resistance in an Equilateral Triangle Electric Circuit
- jmatthews1991
- · Replies 6 ·
Determining light intensity with a mirror
- digitaljeff
- · Replies 9 ·
Rock Group Performs in Bar: How Far Can You Hear?
- stevenbhester
- · Replies 5 ·
The Roundup Ride: Experience the Thrill of 14.56m/s^2!
- ZzZerozZ
- · Replies 4 ·
Units and origin of velocity² vs. centripetal force plot
- kso
- · Replies 2 ·
Force of Gravity on a Man on a Ferris Wheel
- cheerspens
- · Replies 12 ·
Hockey puck collision energy loss with unknown final velocity
- sirfinklstin
- · Replies 7 ·
Calculating Mass for Centripetal Force at 100 km/h Speed with 350 m Radius Curve
- Brittykitty
- · Replies 12 ·
Deriving the displacement equation for a sinusoidal wave
- nietzsche
- · Replies 3 ·
Solve Two Connected Masses for Acceleration
- Juggernaut06
- · Replies 1 ·
Gravitational Potential Energy of the earth
- kt102188
- · Replies 2 ·
How Far is the Center of Mass from the Center of a Square with a Circular Hole?
- kalemi19
- · Replies 1 ·
Calculating Charge and Current
- FeDeX_LaTeX
- · Replies 13 ·
Calculating velocity of a block on a slope using work theorem
- okgo
- · Replies 1 ·
Copper wire resistance problem
- Krajendren
- · Replies 12 ·
Using Gauss's law to determine elctric fields (Calculus based problem)
- camrylx
- · Replies 5 ·
Finding acceleration of a block being pushed up a ramp by a horizontal force
- cellfoneguy
- · Replies 9 ·
Car turning on a bank (circular motion problem)
- theneedtoknow
- · Replies 1 ·
Work Done by Force F: bx^3 over \Deltax=2.6m
- JasonPF
- · Replies 2 ·
Speed of an Electron in an Electric Field
- zahraa
- · Replies 1 ·
Proving the Cartesian oval equation with Snell's law
- fluidistic
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How many moles of gas are in the balloon?
- roam
- · Replies 7 ·
Angular Momentum of a turntable with frictionless bearings
- chara76
- · Replies 1 ·
Toroid, cyclotron, nested solenoids, and current loop problems
- _gaussian
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Kinematics of Particles: What is the Particle's Acceleration at 68 s?
- roam
- · Replies 9 ·
Force on an electron in magnetic field:
- krtica
- · Replies 2 ·
Elastic Collision of a ball and wire
- Quincy
- · Replies 3 ·
How Do You Calculate the Angle in a 2D Elastic Collision?
- LTZach
- · Replies 1 ·
Quantum Number of a Harmonic Oscillator State
- quietrain
- · Replies 10 ·
Wavelength of the wave which is produced at the wire
- thereddevils
- · Replies 2 ·
How Much Work Does Gravity Do on an Ice Flake in a Bowl?
- stargirl17
- · Replies 8 ·
Solve Kinetics, Springs: Find Collar Velocity at s=1 ft
- red123
- · Replies 3 ·
What is the solution for The Great Zacchini's flight over three Ferris wheels?
- roam
- · Replies 10 ·
Finding the Constants α and β for a Racehorse's Acceleration and Velocity
- roam
- · Replies 9 ·
Designing basic circuits to power devices
- alexk307
- · Replies 1 ·
Finding focal length given magnification and object distance?
- speedrsr
- · Replies 1 ·
How Is Current Induced in a Multi-Turn Coil with Changing Magnetic Field?
- Defagment
- · Replies 1 ·
Could Mass and Radius Changes Have Caused a Shift in Earth's Gravity?
- Brittykitty
- · Replies 3 ·
Capacitors, energy storage and energy release
- godtripp
- · Replies 1 ·
Calculating Water Wave Speed and Period in a 4.4m Lake
- jholtz
- · Replies 2 ·
Conservation of Momentum, again :/
- HeyyMarco
- · Replies 2 ·
Conservation of Momentum of roller-skates
- HeyyMarco
- · Replies 2 ·
Magnetic Fields and Proton Beam therapy
- PhilCam
- · Replies 2 ·
Relativistic momentum and energies
- danphil
- · Replies 3 ·