Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Moving three points infinitely away
  • phunphysics2
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Projectile Motion from a given height
  • qwerty101
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13
What is the net electric force on the charge at the origin?
  • sushi362
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4
Signs of Moment Components in Shaft Coupling Analysis
  • aero_zeppelin
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18
Rocket Problem: Determining the amount of fuel burned
  • Ockham
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4
Calculating Horizontal Acceleration on 7.20 kg Block w/F1 & F2
  • dragon18
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8
Solving the Helmholtz Equation for a Point Source
  • bladesong
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8
Zero point in the electric field
  • Colts
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1
Need help on a forces and equilibrium question
  • question dude
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5
When and where do the cars meet?
  • CollegeStudent
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7
Melting a snowball by throwing it at a wall
  • AbsoluteZer0
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4
Simple problem about relative motion.
  • ParrotPete
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1
Quick Question on Taylor Expansions
  • StephenD420
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1
Optics, refraction at spherical surface
  • Saitama
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2
Finding a plane's weight and horizontal acceleration at takeoff
  • cbchapm2
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3
Conservation of angular momentum
  • Saitama
  • · Replies 13 ·
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13
Find the Work Done and the Heat Transfer
  • Northbysouth
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2
How much does 1m^3 oxygen at 10 bar weight at 0 degree celsius?
  • oeei
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1
Determine Velocity at each second
  • CollegeStudent
  • · Replies 4 ·
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4
Is angular momentum completely independent from linear momentum
  • NANDHU001
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2
Why do some chords sounds pleasing while others do not?
  • Nathew
  • · Replies 12 ·
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12
Velocity needed to hit a moving target
  • Becky26
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1
Calculating Take-Off Speed Using Newton's Third Law
  • Bostonpancake0
  • · Replies 4 ·
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4
Circuits - Variables dependent on R?
  • pyroknife
  • · Replies 18 ·
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18
Find Mass Flow Rate and the Exit Flow Area
  • Northbysouth
  • · Replies 3 ·
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3
A question about a moving satellite (Kepler)
  • sapz
  • · Replies 3 ·
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3
Please could you check this working for me?
  • lioric
  • · Replies 4 ·
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4
Please could you checkif i got the 2d collisions right?
  • lioric
  • · Replies 5 ·
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5
Vector Addition? Which Vectors Do I Draw and Where?
  • Stanc
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1
Strength and Direction of Electric Field
  • TheCarl
  • · Replies 3 ·
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3
A question about central-force movement
  • sapz
  • · Replies 2 ·
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2
Superposition of Harmonic Waves
  • azolotor
  • · Replies 2 ·
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2
Electricity with conservation of energy involved.
  • -Entropy-
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1
Two forces applied to car, direction?
  • cbchapm2
  • · Replies 2 ·
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2
Bio-Savart Law, current through wire in semi circle
  • arrowface
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2
Finally, discuss some physical limitations that might
  • Jamin2112
  • · Replies 8 ·
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8
What is the Velocity of a Frictionless Car Passing Through Two Photo Gates?
  • CollegeStudent
  • · Replies 4 ·
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4
What Happens When a Yo-Yo Rolls Without Slipping?
  • PhizKid
  • · Replies 31 ·
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Proton Suspension Between Horizontal Parallel Plates: Charge & Voltage
  • lizaliiu
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6
How Does Gauss' Law Apply to a Cylindrical Shell Surrounding a Charged Line?
  • Stealth849
  • · Replies 10 ·
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10
What is the force applied to a moving object?
  • Robertoalva
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2
Force between two charged spheres hanging from a string
  • AmagicalFishy
  • · Replies 7 ·
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7
I don't have a clue how to find the coordinates
  • lioric
  • · Replies 17 ·
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17
Where Will the Plane Be When the Package Hits the Ground?
  • Yosty22
  • · Replies 1 ·
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1
Find the value of y. Did I do this problem correct?
  • Voltrical
  • · Replies 4 ·
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4
Circuits Question - Voltage and current in an inductor circuit
  • GreenPrint
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2
Insulated Copper Block Heated to 60 Celsius
  • Northbysouth
  • · Replies 1 ·
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1
Trying to solve an elevator problem
  • Robertoalva
  • · Replies 9 ·
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9
How would I go about graphing a momentum experiment? (Design Lab)
  • Owatch
  • · Replies 6 ·
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6
Find the Mass of the Air, and the Work and Heat Transfer
  • Northbysouth
  • · Replies 1 ·
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1
Capacitors/Current/Ohm's Law - Please help I'm so confused
  • riseofphoenix
  • · Replies 1 ·
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1
(Easy) Finding initial velocity from uniform acceleration
  • 2k8bomb
  • · Replies 9 ·
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9
Classical Mechanics: 12N Block on Wall - Will it Move?
  • Bostonpancake0
  • · Replies 4 ·
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4
Relation between the two Radii Rf and Ro
  • OONeo01
  • · Replies 16 ·
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Finding time given average velocity
  • canucks81
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4
Electric field in a couple of different cases
  • LiftHeavy13
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Mass whirling on table pulled by string through center
  • PhizKid
  • · Replies 35 ·
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How do I calculate the drag force on a motorboat accelerating from a dock?
  • Robertoalva
  • · Replies 7 ·
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Volume using Compressibility Factor
  • MechE2015
  • · Replies 1 ·
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1
Calculating Amount of Ice to Cool Tea to 65°C
  • erok81
  • · Replies 8 ·
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8
Molecule collisions in an Ideal Gas
  • derravaragh
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5
Need help with Vertical Velocity I have an exam tomorrow >.<
  • newgirl
  • · Replies 9 ·
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9
What is the skis co-effecient of kinetic friction with the ice?
  • Bostonpancake0
  • · Replies 9 ·
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9
Radii of eqiuipotential surfaces of a charged metal sphere
  • RoosterCancer
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2
Resistance in a series / parallel?
  • dolpho
  • · Replies 11 ·
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11
What is the total flux flowing through a spherical Gaussian surface?
  • CM Longhorns
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Electrostatic force on a parallel plate
  • serverxeon
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3
Determine the Acceleration of Collar B as a result of Collar A
  • Northbysouth
  • · Replies 1 ·
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1
Thermodynamics Pressure Problem Help
  • MechE2015
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4
Finding the Initial Rate of Gas Leakage from a Small Hole in a Cubic Container
  • vmedica
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Off center circular motion (polar coordinates)
  • Astrum
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3
What Forces Act on a Ball Attached to a Massless Rod in a Vertical Loop?
  • bd2015
  • · Replies 3 ·
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Determining the oscilation of a ruler resting on two spinning cylinders
  • daffy
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Vector Displacement Magnitude Calculation
  • kelli
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1
Finding the Angle of Rainfall for a Driving Car
  • burton95
  • · Replies 6 ·
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Parametric equations -> acceleration
  • burton95
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1
How to derive duffing equation for a particular system?
  • great_sushi
  • · Replies 7 ·
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7
Calculating drop in gas pressure
  • Cardigan9
  • · Replies 1 ·
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1
Work done by gas expansion on piston
  • CAF123
  • · Replies 10 ·
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10
Deriving the number of stars as a function of flux and bolometric magnitude.
  • Nekoteko
  • · Replies 14 ·
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14
RLC Circuit help - Trying to find Vs
  • dan2188
  • · Replies 1 ·
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1
Solved: Kinematics Problem: Final Velocity
  • aaronfue
  • · Replies 5 ·
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5
Why Is Medium Acceleration Calculated Using Change in Velocity Over Time?
  • ShizukaSm
  • · Replies 3 ·
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3
Solve Vector Prob: Find Speed in m/s Relative to Ground
  • burton95
  • · Replies 5 ·
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5
How Do You Calculate Deceleration from Average Velocity?
  • Nirupt
  • · Replies 8 ·
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8
Determine initial and final temperatures, adiabatic expansion?
  • snowicorn
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2
Static & Kinetic Friction + An Applied Force on an Inclined Ramp
  • slybuster
  • · Replies 13 ·
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13
Hubble's Constant with coincident galaxies
  • astrofunk21
  • · Replies 9 ·
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9
Calculating Speed of Point P in Physics Homework
  • Saitama
  • · Replies 8 ·
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8
Magnetic field at P, between six parallel wires.
  • arrowface
  • · Replies 19 ·
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19
Three infinite sheets creating two regions - find the potential difference
  • bluelensflares
  • · Replies 3 ·
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3
Determine the magnitude of the charge on the inner and outter surface of sphere
  • gothloli
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What is the Electric Flux through a Small Disk near a Point Charge?
  • ferret123
  • · Replies 1 ·
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Electric flux through a plane described by an equation
  • turquoisetea
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2
Charge inside a spherical shell
  • Tanya Sharma
  • · Replies 26 ·
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26
Kinetic Energy of a sphere due to uniform line of charge
  • zabumafu
  • · Replies 8 ·
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8
Electronics/Power supply assignment questions
  • Dongorgon
  • · Replies 3 ·
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3
Charge outside and inside a hollow ball
  • Nikitin
  • · Replies 13 ·
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13
Thermal physics final temperature of mixture
  • AbsoluteZer0
  • · Replies 6 ·
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6
Concentration and diffusion of oxygen in the Earth's atmosphere
  • Yuriick
  • · Replies 1 ·
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1