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

Simillar long question which will come out during my test,

  • cracktheegg
  • · Replies 10 ·
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10

How does rotational kinetic energy increase in rolling downhill?

  • exscape
  • · Replies 6 ·
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6

Simple harmonic potentials & classical waves

  • gildomar
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1

Superposition of Waves - Standing Waves

  • GreenPrint
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2

Jun 26, 2013How to Find the Speed of a Block in an L-Shaped Track

  • fogvajarash
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5
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3
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1

Super Fun Projectile Motion Problem Such Wow

  • paolostinz
  • · Replies 9 ·
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9

Frictional force (static) = 6 NSolved: Rotational Mechanics Homework

  • allyferrell
  • · Replies 2 ·
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2

What are the forces and acceleration of a rolling cylinder?

  • roll135
  • · Replies 2 ·
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2

Inelastic Football Collision Problem

  • ryanx806
  • · Replies 6 ·
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6

Sound (harmonic) waves questions

  • wislagrew
  • · Replies 5 ·
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5

Calculating the Impact of Sand on a Dump Truck's Weight

  • BOAS
  • · Replies 2 ·
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2

How Do You Calculate Rope Tension with Friction and Constant Velocity?

  • PerSempre
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1

Where Did I Go Wrong in My Analysis of Orbital Motion?

  • Hertz
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2

How Do Friction and Normal Force Affect Stability in a Pinned Structure?

  • umchemist
  • · Replies 5 ·
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5

Inelastic Collision Calculate the Percent Change in KE

  • arizona1379
  • · Replies 3 ·
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3

Mixing Gases, temperature, and the Kinetic Model of Matter

  • evaengineer
  • · Replies 1 ·
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1

Simple Harmonic Motion: Pendulum theory, trouble understanding

  • IQScience
  • · Replies 1 ·
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1

Is the bar in static equilibrium?

  • umchemist
  • · Replies 1 ·
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1

Changes in entropy of an isolated system

  • CAF123
  • · Replies 18 ·
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18

Work done - moving a charge in an electric field

  • cutesteph
  • · Replies 6 ·
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6

Bound charges and electric displacement.

  • -Dragoon-
  • · Replies 4 ·
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4

Finding velocity with given force

  • frownifdown
  • · Replies 1 ·
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1

When Is the Superposition of These Plane Waves Zero?

  • GreenPrint
  • · Replies 10 ·
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10

How Is Force Calculated When Wind Hits a Wall?

  • Shizzukani
  • · Replies 1 ·
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1

Normal Force Problem: Find Contact Force b/w Sphere, Wedge A & Wall B

  • rajumahtora
  • · Replies 5 ·
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5

Cylinder rolling down a wedge - wedge should not slip

  • Saitama
  • · Replies 3 ·
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3

True/False -ish question, buoyancy

  • tg22542
  • · Replies 7 ·
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7

Voltage over bulb with broken filament

  • coconut62
  • · Replies 6 ·
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6

Free Charge Moving in Uniform Magnetic Field

  • prslook26
  • · Replies 5 ·
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5

Applying cross product to some problem

  • Genericcoder
  • · Replies 10 ·
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10

What is the Dispersive Power of Glass and How is it Calculated?

  • GreenPrint
  • · Replies 1 ·
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1

What is its linear speed at the bottom of the incline?

  • jimmyboykun
  • · Replies 3 ·
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3

Calculating Earth's Shape as an Ellipsoid

  • norsktramp
  • · Replies 7 ·
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7

What is the Apparent Weight of a Pendulum on a Trapeze?

  • katkinson
  • · Replies 1 ·
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1

Climate Sensitivity math problem

  • courtneywetts
  • · Replies 17 ·
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17

Is heat absorbed, when volume is increased?

  • schrodingerscat11
  • · Replies 7 ·
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7

Planet and Car rotational movement

  • qqchan
  • · Replies 1 ·
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1

Work done by an external force problem help

  • maxalador
  • · Replies 8 ·
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8

Help Needed with Franck Hertz Oscillation Lab Report Analysis

  • jenny777
  • · Replies 9 ·
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9

Yo-Yo Homework: Find Average Force on String

  • Avi Nandi
  • · Replies 1 ·
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1

How Far Apart Are the Two Slits in a Double-Slit Experiment?

  • Violagirl
  • · Replies 3 ·
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3

Calculating Bond Energy of Steel Using Theoretical Strength Eqn

  • FaraDazed
  • · Replies 1 ·
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1

Is the Stick Lying Against the Wall at Rest?

  • coconut62
  • · Replies 7 ·
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7

How to Determine g from Centripetal Acceleration Graph?

  • michellelamcc
  • · Replies 13 ·
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13

Work done is the area under a voltage against charge graph

  • mrcotton
  • · Replies 2 ·
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2

How Many Bounces Until the Ball Reaches 2.44m?

  • BOAS
  • · Replies 3 ·
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3

Speed of two bodies that sticks together after collision

  • coconut62
  • · Replies 5 ·
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5

Momentum transfer: Trolley colliding with spring

  • coconut62
  • · Replies 2 ·
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2

Pressure change with constant volume

  • SadStudent
  • · Replies 2 ·
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2

Difficult inductance + torque rolling rail problem

  • oreosama
  • · Replies 1 ·
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1

What Is the Angle Between Velocity Vector and Trajectory at Maximum Height?

  • Objection
  • · Replies 1 ·
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1

Solve] Time to Boil 1.1 kg Water with 1500 W

  • k31453
  • · Replies 1 ·
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1

Rotational motion: Expression for Angular Velocity

  • NATURE.M
  • · Replies 12 ·
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12

How Do You Relate the Accelerations in a Disk and Pulley System?

  • Avi Nandi
  • · Replies 4 ·
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4

Electric Potential: Does Energy Increase/Decrease?

  • Litcyb
  • · Replies 1 ·
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1

Reaction Force of Rod at 90 and 180 Degrees

  • Kishlay
  • · Replies 31 ·
2
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31

What Forces Act on a Hanging Peg?

  • coconut62
  • · Replies 5 ·
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5

Thickness of film when you are given indexes of refraction. HELP

  • astru025
  • · Replies 2 ·
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2

Torque Problem Static equilibrium

  • k31453
  • · Replies 3 ·
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3

Maximizing Cyclist Speed: Solving the Energy Question in a Race

  • neededthings
  • · Replies 11 ·
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11

Find the tension in the horizontal cable that supports the boom

  • k31453
  • · Replies 1 ·
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1

Calculate Cyclist's Speed in Race: Energy-Work Problem Solution

  • neededthings
  • · Replies 3 ·
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3

Magnetic Field due to a current carrying wire

  • irivce
  • · Replies 1 ·
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1

Angular size in degrees problem,

  • astru025
  • · Replies 3 ·
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3

Angular momentum of a glancing inelastic collision

  • Esoremada
  • · Replies 1 ·
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1

Rotational Mechanics: Plank Acceleration and Frictional Force Calculation

  • allyferrell
  • · Replies 1 ·
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1

Projectile motion rock off a cliff

  • maddief
  • · Replies 1 ·
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1
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5

Angular momentum: bullet through block with rod and pivot

  • blackheart
  • · Replies 3 ·
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3

Minimum Rate of Rocket Fuel Consumption

  • nx01
  • · Replies 2 ·
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2

Confusion on applying right hand rule

  • Genericcoder
  • · Replies 3 ·
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3

Fourier transform of single pulse & sequence of pulses

  • bfusco
  • · Replies 5 ·
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5

What is the Color of 250nm Light Passing Through a Material with n=1.6?

  • ArtVandelay
  • · Replies 2 ·
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2

Angular acceleration with a mass

  • tg22542
  • · Replies 1 ·
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1

Rotational Kinematics - Angular Acceleration

  • nx01
  • · Replies 4 ·
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4

Newtons 2nd Law - Acceleration Problem

  • Speedking96
  • · Replies 3 ·
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3

Moment & Forces: Find Other Forces Present

  • adjacent
  • · Replies 21 ·
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21

Rotation of Earth relative to a distant star

  • Sara Samuel
  • · Replies 3 ·
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3

Finding Other Force in 2-Force Problem

  • k31453
  • · Replies 5 ·
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5

Simple harmonic motion equations derivation?

  • hey123a
  • · Replies 1 ·
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1
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4

Uniform circular motion and tension of a string

  • robbyrandhawa
  • · Replies 15 ·
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15

What is the Angular Momentum of a Projectile at a Given Time?

  • mathwhiz
  • · Replies 7 ·
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7

Collision between two masses with spring

  • colmes
  • · Replies 14 ·
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14

Help with understanding Shear Force and Bending Moment

  • NoobeAtPhysics
  • · Replies 2 ·
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2

How to solve the moment questions, I tried couple of times but

  • cracktheegg
  • · Replies 14 ·
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14

How long does it take the penny to reach the ground?

  • Medgirl314
  • · Replies 8 ·
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8

Area moment of intertia of a t-bar

  • NoobeAtPhysics
  • · Replies 1 ·
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1

True or False, Parallel Axis Theorum

  • NoobeAtPhysics
  • · Replies 4 ·
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4

Optics: What is phase matching, and mode locking

  • bfusco
  • · Replies 1 ·
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1

General topology of a two terminal electrical device

  • tarjeibo
  • · Replies 3 ·
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3

What Is the Average Speed of Tyler's Journey?

  • RoryScanlan
  • · Replies 5 ·
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5

Can anyone check my working on the tension upcoming test question

  • cracktheegg
  • · Replies 4 ·
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4

Angular Velocity of Ice Skater Around a Pole

  • Gwozdzilla
  • · Replies 3 ·
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3

Magnitude of the resultant acceleration

  • Vlipfire
  • · Replies 9 ·
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9

Finding the Moment of a Force Using Varignon's Theorem

  • sevag00
  • · Replies 8 ·
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8
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4

What Temperature Triples the RMS Speed of an Ideal Gas?

  • nickb145
  • · Replies 3 ·
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3