Introductory Physics Homework Help Forum

Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.

Threads

Calculating acceleration due to gravity on a planet

  • Bryon
  • · Replies 3 ·
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3

Acceleration with limited known variables Question

  • bbauer2
  • · Replies 4 ·
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4

Displacement and Velocity Problem

  • Loppyfoot
  • · Replies 2 ·
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2
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2

Simple vector problems (but causing me a headache)

  • Wishingwell
  • · Replies 2 ·
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2

Finding half-life from Y=Ae^(-t/lambda)

  • fuzzybear
  • · Replies 1 ·
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1

How Do You Calculate Uncertainties in Velocity Measurements?

  • DrDanger
  • · Replies 1 ·
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1

Pitcher Throwing A Ball In Protest

  • Warmacblu
  • · Replies 12 ·
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12

How Do You Calculate the Average Speed for a Round Trip?

  • mbayabo
  • · Replies 7 ·
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7

Calculating Time and Distance in a Constant Velocity Sprinting Problem

  • bbauer2
  • · Replies 3 ·
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3

What Is the Separation Between Two Cars After Distracted Driving?

  • demonelite123
  • · Replies 3 ·
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3

How Do I Solve This Equilibrium Moment/Torque Problem?

  • stpmmaths
  • · Replies 6 ·
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6
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1

A ball is thrown and I'm trying to understand why

  • exparrot
  • · Replies 9 ·
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9

Find average velocity of Vector A and B

  • Arshad_Physic
  • · Replies 2 ·
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2

Calculating Initial Velocity for Accurate Basketball Shot

  • Alserina
  • · Replies 3 ·
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3

Finding initial speed and acceleration of a truck slowing down

  • WonkySlinky
  • · Replies 2 ·
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2

How many drops in all the oceans?

  • Lemniscate
  • · Replies 4 ·
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4

Find the direction of the resulatnt vector

  • Arshad_Physic
  • · Replies 2 ·
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2

Difficult Projectile Motion Arrow Problem

  • JoshMP
  • · Replies 7 ·
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7

Finding average velocity from a velocity-time graph

  • tascja
  • · Replies 1 ·
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1

Calculating velocities with only acceleration and time

  • noelani
  • · Replies 2 ·
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2

Adding Horizontal Vectors Graphically

  • Lemniscate
  • · Replies 3 ·
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3

Cross a River: Time Needed for 1.5km Distance at 6.6km/h Speed

  • megamax48
  • · Replies 1 ·
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1

Components and Vectors and Lengths, Oh My

  • Aquas
  • · Replies 1 ·
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1

Electric field from two concentric charged cylinders

  • fluidistic
  • · Replies 6 ·
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6

Calculate Acceleration of Thrown Baseball: 5.98s, 1.2m from Rest

  • yankeekd25
  • · Replies 2 ·
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2

Finding the Shortest Path in a Vector Space

  • Neophyte
  • · Replies 2 ·
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2

Why doesn't this solution work?

  • dvs0826
  • · Replies 9 ·
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9

How Do You Calculate Half-Life from an Exponential Decay Equation?

  • fuzzybear
  • · Replies 3 ·
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3

Checking astronomy answers on apparent magnitude and circumpolar constellations

  • ChrisEffinSmi
  • · Replies 1 ·
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1
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4

Predicting time for water to drain from cup

  • SkiBum326
  • · Replies 1 ·
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1

Flywheel energy storage for a 330 km car trip

  • LBloom
  • · Replies 1 ·
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1

Understanding Simple Kinematics: Solving for Velocity in Resisted Motion

  • bcjochim07
  • · Replies 1 ·
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1

Relate simple harmonic motion to circular motion

  • peanut15
  • · Replies 3 ·
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3

Incline plane, two masses, a pulley

  • jimz
  • · Replies 2 ·
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2

Heat and work in adiabatic container

  • kiwikahuna
  • · Replies 1 ·
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1
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1

Solving Physics Puzzles in Space: A 500cm^3 Challenge

  • jcz2
  • · Replies 2 ·
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2

Heat Transfer of nail into a board

  • amiv4
  • · Replies 2 ·
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2
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4

Projectile Motion of a Pebble on the Sloping Faces of Pyramid Cheops

  • joemama69
  • · Replies 5 ·
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5

Dimensional Analysis of Free-Fall Time of Astrophysical Gas Ball

  • CaptainEvil
  • · Replies 1 ·
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1

Vectors and motion in 2D (physics problem)

  • natty210
  • · Replies 1 ·
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1

Calculating Time and Final Velocity of a Ball Thrown into the Air

  • Amel
  • · Replies 3 ·
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3

Motion with constant acceleration

  • Quantum_Grid
  • · Replies 2 ·
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2

What Is the Final Temperature in the Copper Calorimeter Experiment?

  • amiv4
  • · Replies 4 ·
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4

Addition of vectors and direction

  • almangar
  • · Replies 3 ·
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3

Finding initial velocity from distance and final velocity

  • Krasz
  • · Replies 3 ·
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3

Force that link 3 exerts on link 2 in vertically lifted chain

  • Zhalfirin88
  • · Replies 15 ·
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15
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4
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5

Finding Final Velocity [Need Assistance]

  • pharmguy
  • · Replies 2 ·
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2

Copper cylinder volume increases by 0.150% from 20°C

  • amiv4
  • · Replies 1 ·
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1

Person walking on overhanging plank before it tips

  • renaldocoetz
  • · Replies 8 ·
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8

Simple,quick relative velocity question?

  • sameeralord
  • · Replies 3 ·
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3

Find its position at the instants when velocity is zero

  • AlexGM07
  • · Replies 4 ·
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4

Car at traffic light with position x(t) = bt² + ct³

  • jcz2
  • · Replies 2 ·
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2

How Long Will it Take Me to Catch The Bus?

  • bleedblue1234
  • · Replies 1 ·
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1

Study guides for Serway college physics

  • swiftjab
  • · Replies 1 ·
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1

Backpacker walking west then east with different velocities

  • buyerat
  • · Replies 7 ·
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7

Horizontal velocity of a baseball throw at 35°

  • hurtingBrain
  • · Replies 39 ·
2
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39
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5

Negative time and positive time

  • kellyab8
  • · Replies 1 ·
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1

Rectilinear Motion with Constant Acceleration

  • Foghorn
  • · Replies 3 ·
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3

How Long Does a Bolt Fall the Last 28% of 85 Meters?

  • Gattz
  • · Replies 10 ·
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10

Connected Capacitor: Potential & Charge

  • songoku
  • · Replies 11 ·
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11

Solving the Toaster Friction Problem

  • blackboy
  • · Replies 10 ·
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10
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2

Average speed for a 42.2 km marathon run in 3 h 53 min 17 s

  • _wantana
  • · Replies 4 ·
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4

Calculating Initial Velocity and Acceleration of Passing Cars

  • demonelite123
  • · Replies 5 ·
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5

Superball bouncing off wall average acceleration

  • bearhug
  • · Replies 8 ·
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8
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3

Angular relationship question.

  • CandyApples
  • · Replies 1 ·
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1

Power Dissipation in Driven Oscillator: Calculate Average

  • swuster
  • · Replies 3 ·
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3

Finding Velocity and Position of a Moving Particle: A Function of Time

  • Loppyfoot
  • · Replies 6 ·
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6
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1
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1

Stable equilibrium and net force

  • physgirl
  • · Replies 4 ·
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4

Object drops vertically with a horizontal force acting on it

  • MechaMZ
  • · Replies 1 ·
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1

Basic Kinematics HW questions for AP Physics

  • cntower
  • · Replies 1 ·
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1

Force Needed to Propel Object to 100m on Moon

  • codeman9
  • · Replies 11 ·
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11

Finding the magnitude of velocity given vx and vy

  • chelseaalyssa
  • · Replies 3 ·
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3

Electric field of an infinite charged rod

  • fluidistic
  • · Replies 1 ·
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1

Stuntman jumping 2D kinematics.

  • CandyApples
  • · Replies 1 ·
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1

What Does the Slope of a Force vs. Acceleration Graph Indicate?

  • psychosushi
  • · Replies 4 ·
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4
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7

Backpacker walking west then east with average velocity

  • kathypoot
  • · Replies 3 ·
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3

Calculating Maximum Height and Flight Time of a Model Rocket Launch

  • gadawg90
  • · Replies 7 ·
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7

How to figure out a equation given the variables

  • Kennyh
  • · Replies 3 ·
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3

If you are told an object is accelerating what should you conclude?

  • DUCEDAWG
  • · Replies 3 ·
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3

Verifying the Limits of Newton's Second Law with Blocks

  • IHateMayonnaise
  • · Replies 5 ·
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5

Shopper on moving and stationary escalators

  • Warmacblu
  • · Replies 3 ·
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3

Physics. Linear Mechanics question

  • vegetto34
  • · Replies 7 ·
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7

Minimum force to hold an inverted cone with two fingers

  • physicsguy10
  • · Replies 2 ·
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2

Damped harmonic oscillator and displacement

  • Eric_meyers
  • · Replies 5 ·
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5
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2

Stuntman jumping between buildings with 1s flight time

  • CandyApples
  • · Replies 3 ·
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3

Distance travelled with constant velocity or constant acceleration

  • Physics1854
  • · Replies 1 ·
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1