Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Magnitude of the electric field in a copper wire.
- Pepjag
- · Replies 3 ·
Double Speed: Proton Acceleration with 2000MV Potential
- channel1
- · Replies 3 ·
Electrostatics question. just need a bit direction.
- PrashntS
- · Replies 3 ·
Impulse exerted by bullet on block after collision
- NasuSama
- · Replies 2 ·
Solving Joe's Tricky Boat Problem: Find Boat Speed Relative to Joe
- NasuSama
- · Replies 4 ·
Potential for an infinite line charge
- blerb795
- · Replies 8 ·
What is the Force of Tension and Acceleration in a Hanging Mass System?
- wizzpowa
- · Replies 4 ·
Mini-Golf Windmill: Find Minimum Linear Speed
- pmd28
- · Replies 5 ·
Finding 2D coordinates in different frames
- futurphy
- · Replies 5 ·
How Does Doubling Initial Height Affect Projectile Range?
- pxp004
- · Replies 1 ·
Acceleration Practice Problems: Solving for Distance and Magnitude
- member 446420
- · Replies 4 ·
Under what conditions does quantum mechanics reduce to classical mechanics?
- amberbarton
- · Replies 1 ·
Estimate the Hydrogren Burning Lifetimes of Stars
- SHISHKABOB
- · Replies 1 ·
Work done by friction with a pulling force at an angle
- DLH112
- · Replies 4 ·
What is the direction of propagation for a wave
- aaaa202
- · Replies 3 ·
What Is the Correct Derivative of the Function y(r) = (r^2 - 5.50r)exp(-r)?
- justin335
- · Replies 4 ·
Very basic, short impulse problem. Just need some explanation.
- AATroop
- · Replies 2 ·
Static and Kinetic Friction problem
- jff0404
- · Replies 9 ·
Calculating the Angle of Static Friction for a Crane Lifting a Box
- Nicolaus
- · Replies 8 ·
Change in speed needed for a satellite to graze the surface
- Flipmeister
- · Replies 2 ·
Millikan Oil Drop Experiment - A few questions
- ItzPootz
- · Replies 1 ·
Calculating the Rotational Kinetic Energy of Walking
- flip290
- · Replies 1 ·
Understanding mA/mV and A/V Units in Transconductance Parameters
- NewtonianAlch
- · Replies 1 ·
Angular acceleration of a bucket attatched to a solid cylinder
- anomalocaris
- · Replies 2 ·
Wave Nature of Light - Calculating Wavelength (Double Slit Exp)
- PeachBanana
- · Replies 4 ·
What Is the Resultant Velocity of an Airplane in Wind?
- v3ra
- · Replies 5 ·
Propagation of Uncertainty with Angles
- TheJuke
- · Replies 5 ·
What Forces Act on a Chain Hanging from a Table?
- Vroc
- · Replies 16 ·
Internal resistance of multimeter
- bigplanet401
- · Replies 2 ·
Calculate the average amount of power that the heart delivers
- Hangst
- · Replies 4 ·
Errors in this experimental physics lab
- Lolagoeslala
- · Replies 2 ·
Adding parallel current sources?
- theBEAST
- · Replies 3 ·
At what points does an arrow pass a bird 75m away?
- viking509
- · Replies 11 ·
Power dissipated from resistance
- baldwindc
- · Replies 4 ·
Electric Potential of a Spherical Charge Distribution
- p6.626x1034js
- · Replies 7 ·
Work done by gravity by Wonder Woman
- venceslau
- · Replies 4 ·
Inelastic Collision and Angular Momentum.
- pwkr
- · Replies 3 ·
Block dropped onto spring: why include gravitational PE during compression?
- Lo.Lee.Ta.
- · Replies 3 ·
Equation for momentum with headwind
- susiehk
- · Replies 6 ·
Kinetic Energy,Work Energy therom, Maximum Height
- Dejahboi
- · Replies 7 ·
When is angular acceleration positive for a rotating fan?
- layla2525
- · Replies 3 ·
Rotational motion pendulum problem
- joe426
- · Replies 5 ·
[Astro] Proton-Proton Chain Energy
- tylerc1991
- · Replies 5 ·
Why multiply kg by g to convert to Newtons but lbs by 4.48
- tratata
- · Replies 9 ·
How Long Before the Apple Core Hits the Ground?
- Nicolaus
- · Replies 4 ·
Rotational quantity analogous to linear displacement in fan problem
- layla2525
- · Replies 4 ·
How Do You Find Velocity in a Rotating Amusement Park Ride?
- user2867
- · Replies 1 ·
Conservation of energy problem child slides down at angle? check my asnwers?
- nchin
- · Replies 3 ·
Rotational motion roller coaster problem
- joe426
- · Replies 6 ·
Siphon flow rate with 1.2 cm diameter and 64 cm height difference
- mantaslawl
- · Replies 1 ·
What is the wire's linear charge density from a proton?
- Bigworldjust
- · Replies 15 ·
Work by electric field when separating two opposite charges
- Fabio010
- · Replies 6 ·
Balancing Gravity and Charge (Sears and Zemansky 4th Edition)
- equant
- · Replies 1 ·
Compare Mass-Pulley Frictionless Slope
- warnexus
- · Replies 5 ·
Pulley, Motor and Weight Torque Problem
- major.triad
- · Replies 1 ·
Force on an electron in a 3.0×10⁶ V/m electric field
- Eastmann
- · Replies 1 ·
Why is weight component along an incline MG*sin(θ) not MG/sin(θ)?
- Rabscuttle
- · Replies 7 ·
Find height of ball under water beam
- Huumah
- · Replies 1 ·
Atwood machine with rotating pulley disk
- kchurchi
- · Replies 2 ·
Estimating the lorentz factor of a spaceship
- EmmaLemming1
- · Replies 8 ·
Plane's new velocity after wind from west
- jff0404
- · Replies 2 ·
Linear motion converted into rotatory motion problem
- rabiakhan.91
- · Replies 17 ·
How Much Heat Is Needed for Each Process in a PV Diagram?
- Nellen2222
- · Replies 7 ·
Finding velocity from force and distance
- JKGlover
- · Replies 10 ·
Understanding Velocity and Acceleration: Scalar vs Vector Quantities
- venture
- · Replies 3 ·
How to Find the Y-Component of a Plane's Velocity with Respect to the Ground
- scorks
- · Replies 1 ·
Find the acceleration : block slides on a wedge
- pcpssam
- · Replies 3 ·
Ratio of gravitational force from moon to Earth on person on surface
- Freemark
- · Replies 14 ·
Orbital Period of satellite in terms of v and r
- Cloud 9
- · Replies 4 ·
Difference between kinetic and static friction.
- AMG96
- · Replies 6 ·
Tension in the hawsers holding a beam
- lendav_rott
- · Replies 8 ·
Problem with calculating final temperature of water
- v3ra
- · Replies 7 ·
Going from cylindrical to cartesian coordinates
- Niles
- · Replies 13 ·
Finding derivatives and extrema of y(r)=(r²-8r)exp(-r)
- Kolby
- · Replies 7 ·
Calculating Impulse Based off a graph
- doctorjuice
- · Replies 2 ·
Cycler on a winding and velocity
- Glyper
- · Replies 1 ·
Mutually Perpendicular Magnetic Fields
- achintya.s
- · Replies 1 ·
Finding vertical vs perpendicular distance for moments
- phospho
- · Replies 1 ·
Elementary - braking force of a trolley
- Glyper
- · Replies 8 ·
What is the electric force of the molecule on the proton?
- Bigworldjust
- · Replies 2 ·
How Do You Calculate the Final Velocity of Two Colliding Cars?
- rabiakhan.91
- · Replies 3 ·
How Do You Calculate Forces and Acceleration in a Two-Block Pulley System?
- 33639
- · Replies 3 ·
Muon decay and Special Relativity
- JackFlash
- · Replies 1 ·
How long would an electron-positron pair exist for?
- ZedCar
- · Replies 7 ·
Stimulated emission/Ne-He-laser
- lep11
- · Replies 1 ·
Why is kinetic energy maximized when force equals zero?
- nchin
- · Replies 1 ·
Hoop rolling down incline
- Zach981
- · Replies 1 ·
Minimum Kinetic Energy in a Deuteron: Which Formula Is Correct?
- ZedCar
- · Replies 4 ·
What Is the Plane's Constant Acceleration During Takeoff?
- asheik234
- · Replies 5 ·
Finding plane's acceleration from watch angle during takeoff
- asheik234
- · Replies 11 ·
Golfer's second putt angle and displacement after missing northwest
- p5oct
- · Replies 2 ·
How Does a Moving Speaker Affect Sound Frequency Perception?
- songoku
- · Replies 7 ·
Ricochet of moving / rotating block off a wall
- DigitalPenman
- · Replies 7 ·
Finding force from mass and velocity with F=ma
- Dejahboi
- · Replies 44 ·
Using Energy to Solve Work Problem
- murrskeez
- · Replies 7 ·
How Do You Calculate the Average Velocity of a Thunderstorm?
- p5oct
- · Replies 2 ·
Newton's second law 3 pulley problem.
- travisdass123
- · Replies 2 ·
Why would density increase when Poisson's ratio > 0.5?
- theBEAST
- · Replies 3 ·
Multiple choice, magnetic force on the particle
- Mdhiggenz
- · Replies 1 ·