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

Speed of longitudinal wave 30 times the speed of a transverse wave?

  • PirateFan308
  • · Replies 8 ·
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8

Particle's Velocity in t: -kt^3 + c

  • Cbray
  • · Replies 3 ·
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3

Can the spring constant k be negative ?

  • idir93
  • · Replies 5 ·
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5

Magnetic Field of a Coil Problem

  • bdh2991
  • · Replies 1 ·
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1

Physics momentum and impulse questions

  • Ereny
  • · Replies 3 ·
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3

How to Calculate Work Required for Moving a Charge in 2D Electric Field

  • linda300
  • · Replies 1 ·
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1

Centre of mass problem; Non uniform rod with ball weights

  • Conesdome
  • · Replies 1 ·
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1

Physical meaning of a commutator?

  • Fellowroot
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1
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1

SHM: Deriving x = A cos(wt) & Intuitive Understanding

  • Oz Alikhan
  • · Replies 2 ·
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2

Calculate the pressure experienced by the sensor ?

  • Colin19
  • · Replies 5 ·
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5

Kinetic friction, mass on track when will it stop.

  • sg001
  • · Replies 4 ·
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4

A plane is flying through the air at a velocity 88km/hr

  • jacknjersey
  • · Replies 16 ·
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16

Find the speed of fluid using bernoulli

  • songoku
  • · Replies 2 ·
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2

How Far Should a 100kg Mass Be Placed from Point A to Keep a Rod Horizontal?

  • shalikadm
  • · Replies 10 ·
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10

Calculate the distance the aircraft has travelled ?

  • Colin19
  • · Replies 19 ·
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19

Sound Intensity and Bird Watching

  • majormaaz
  • · Replies 3 ·
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3
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5

Looking for tables of data - Nuclear/Particle physics

  • iamBevan
  • · Replies 1 ·
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1

Physics Question about Magnetic Force & parallel wires

  • tnbstudent
  • · Replies 3 ·
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3

Equilibrium of Two Rods: Finding the Point of Toppling

  • songoku
  • · Replies 4 ·
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4

Rotating and Nonrotating Rods Superposed

  • PeachBanana
  • · Replies 5 ·
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5

Calculating Time for a Person Pulling a Lawn Mower

  • zaddyzad
  • · Replies 2 ·
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2

How Can Precision and Setup Influence Metal Rod Mass Measurement Accuracy?

  • DopplerFX
  • · Replies 1 ·
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1

Calculate the voltage drop of the train (Picture included)

  • Simmer
  • · Replies 2 ·
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2

Finding Moments of a Beam: Where Did I Go Wrong?

  • Spakfilla
  • · Replies 2 ·
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2

Simply supported beams bending moment

  • stevemilw
  • · Replies 8 ·
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8

Can someone please explain this solution? (magnetic fields))

  • ChaseDuncan
  • · Replies 5 ·
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5

What Is the Hydrostatic Force on One End of a Tank Filled with Gasoline?

  • sushifan
  • · Replies 17 ·
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17

Confirming Data Table for Mars Lander Speed-Time Graph

  • jacknjersey
  • · Replies 1 ·
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1

Electric Potential, conducting sphere in a conducting shell

  • fornax
  • · Replies 21 ·
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21
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3

Kirchoffs Law and simple circuit problem

  • QuarkCharmer
  • · Replies 6 ·
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6
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2

Calculating torque, force and angles

  • Leata
  • · Replies 1 ·
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1

Conservation Laws in Lagrangian Mechanics

  • Lengalicious
  • · Replies 24 ·
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24

Finding the magnetic field at a point with two wires.

  • cndman
  • · Replies 1 ·
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1

Collision of Two Carts: What is the Final Kinetic Energy of the System?

  • eagles12
  • · Replies 26 ·
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26

Why isn't linear momentum conserved?

  • IntegrateMe
  • · Replies 6 ·
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6

Calculating Applied Torque for a Grinding Wheel

  • PeachBanana
  • · Replies 4 ·
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4

Java Calling Methods: Learn How to Use Them

  • ProPatto16
  • · Replies 9 ·
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9

Finding Max Determinant of 6x6 matrix

  • shiranian
  • · Replies 2 ·
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2

Superposition of harmonic oscillations

  • Lengalicious
  • · Replies 5 ·
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5

Nit-Picky Questions on Induced EMF, and Electromagnetism in General

  • pr33ch
  • · Replies 2 ·
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2

Resistors connected in parallel and series

  • Cromptu
  • · Replies 3 ·
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3

Does an Inelastic Collision Affect Conservation of Mechanical Energy?

  • eagles12
  • · Replies 8 ·
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8

How far does the putty-block system compress the spring?

  • eagles12
  • · Replies 5 ·
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5

In which situation is the magnetic force nonzero?

  • McAfee
  • · Replies 2 ·
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2

Finding angular velocity of a car and period of a planet's rotation

  • mi-go hunter
  • · Replies 2 ·
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2
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3

What is the angle of static friction for two boxes with different masses?

  • quakedude
  • · Replies 2 ·
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2

What is the Tension Force of a Swing Set at the Bottom of its Path?

  • testme
  • · Replies 4 ·
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4

How Does Inductance Affect Light Dimming in AC Circuits?

  • Sefrez
  • · Replies 1 ·
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1

Conservation of momentum vs conservation of kinetic energy

  • eosphorus
  • · Replies 18 ·
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18

Momentum question involving an elastic collision

  • Heron
  • · Replies 6 ·
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6

Thermodynamics: two pistons; different pressures, volumes, and temperatures

  • Color_of_Cyan
  • · Replies 3 ·
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3

Noted and corrected, thank you!

  • jacknjersey
  • · Replies 2 ·
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2

Velocity - time home work check

  • jacknjersey
  • · Replies 2 ·
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2

Standing sound waves for fundamental and first two overtones

  • chaotiiic
  • · Replies 5 ·
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5

How Fast Does the Tip and Center of Mass of a Falling Rod Travel?

  • sweetpete28
  • · Replies 1 ·
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1

Adiabatic Expansion: Solving for Pressure and Volume

  • bobsmith76
  • · Replies 1 ·
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1

Angular momentum of ball spinning on a pendulum around a support point

  • Los Frijoles
  • · Replies 1 ·
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1

How Does an Ant Manage to Move a Caterpillar on an Inclined Plane?

  • Koborl
  • · Replies 5 ·
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5

2D motion: frames of refrence: calculating velocity,heading and time

  • rahrahrah1
  • · Replies 1 ·
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1

Tangential and radial coordinate problem. Confused about the FBD.

  • theBEAST
  • · Replies 4 ·
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4

Kinetic Energy of a Bowling Ball

  • PeachBanana
  • · Replies 3 ·
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3

Solving a Monatomic Ideal Gas Expansion Problem

  • VincentweZu
  • · Replies 4 ·
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4

Force Required by Rockets and Angular Acceleration

  • PeachBanana
  • · Replies 4 ·
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4

Understanding Momentum and Conservation in Falling Balls

  • Ereny
  • · Replies 2 ·
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2

What Is the Mass of the Second Ice Skater?

  • eagles12
  • · Replies 7 ·
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7

Skier Going Uphill - Intro Physics Problem

  • Roadman20
  • · Replies 7 ·
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7

Potential Energy of System (Uniform Rod and String)

  • FeDeX_LaTeX
  • · Replies 1 ·
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1

How do you simplify the following expressions?

  • hexhall
  • · Replies 10 ·
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10

Friction Force on Banked Curves

  • jnlbctln
  • · Replies 11 ·
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11

Electric Field via partial derivative

  • fornax
  • · Replies 7 ·
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7

What is the force exerted by a golf club on a ball in a typical swing?

  • eagles12
  • · Replies 3 ·
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3

Vertical Displacement of Electron (Millikan's Oil Drop)

  • honeybee63
  • · Replies 1 ·
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1

Conservation of Momentum in Different Frames of Reference

  • quantised
  • · Replies 1 ·
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1

Rotational Plus Translational Motion for Sphere of Yarn

  • sweetpete28
  • · Replies 5 ·
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5
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9

Conservation of Momentum possibly?

  • JuliusDarius
  • · Replies 1 ·
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1

Faraday's Experiment: Estimating Pulse Duration & Magnitude

  • black_hole
  • · Replies 1 ·
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1

How High Will Each Ball Swing After Elastic Collision?

  • Mdhiggenz
  • · Replies 2 ·
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2

Angular and Linear Acceleration on a Wheel

  • PeachBanana
  • · Replies 2 ·
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2

How to find the binding energy of a photon?

  • Mayhem12
  • · Replies 4 ·
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4

Max speed of a car at a curve banked road.

  • azizlwl
  • · Replies 14 ·
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14

Expressions for the energy density of electromagnetic waves

  • 99wattr89
  • · Replies 7 ·
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7

A person moves a full sam's club shopping cart mass=80.0 kg from rest

  • Ereny
  • · Replies 1 ·
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1

Net Magnetic Field at the Center of a Loop and X Distance Away From a Wire

  • BornSurvivor
  • · Replies 1 ·
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1

Charging and Discharging capacitors

  • whatwhatwhat
  • · Replies 1 ·
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1

Velocity and Loss in Energy onedimensional

  • Nuingaer
  • · Replies 1 ·
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1
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1

Elastic Collision or Inelastic Collision? Two balls colliding.

  • testme
  • · Replies 2 ·
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2

Elastic Collision between billiard balls

  • testme
  • · Replies 4 ·
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4

Calculating Net Force on Charged Particles in Equilateral Triangle Configuration

  • Genericcoder
  • · Replies 4 ·
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4

Energy dissipated over time by resistors

  • scarne92
  • · Replies 1 ·
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1

Position-Time graph vs. Velocity-Time graph

  • BloodyMinded
  • · Replies 2 ·
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2

Solving Parallel RC Circuit: i(t)=t/3 + 1/2 A

  • pavlovskitten
  • · Replies 5 ·
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5

Calculating Current in a Wire of Given Dimensions

  • Johnahh
  • · Replies 3 ·
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3

Velocity distribution of atoms

  • Niles
  • · Replies 1 ·
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1