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

Angular velocity and regular velocity

  • asi123
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2

Two blocks with same kinetic energy pushed same distance by force F

  • soupastupid
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2

How Do Ships A and B Move Relative to Each Other?

  • Jharr94
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4

Applications of Newtons Law Question 1

  • noasherelol
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3

How Far Can a Golf Ball Travel at 30° on a Level Course?

  • mrkidd1k
  • · Replies 3 ·
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3

Finding vector components for a southwest displacement

  • ch2kb0x
  • · Replies 3 ·
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3

Contact Forces with a Massless String

  • Inertialforce
  • · Replies 3 ·
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3

Projectile Motion - Horizontal Launch

  • bkoiskewl1
  • · Replies 7 ·
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7

How Do You Calculate Distance When Velocity Changes?

  • bigzee20
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7

Why Do Spring Constants Vary With Different Calculation Methods?

  • mike115
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2
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Spring potential energy equation for conservation of energy

  • I_LoveCasey!
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1

Calculating Man's Northward Distance Traveled with Vector Components

  • ch2kb0x
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1

Compton scattering with symmetric electron and photon angles at 30keV

  • Quelsita
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1

Persistence of vision vs screen glow and eye image persistence

  • iamamn
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1

Three bys trying to balance a seesaw

  • Naldo6
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1

Calculate the moment of inertia of a uniform solid cone

  • ehilge
  • · Replies 2 ·
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2

What is the potential energy of an electron

  • Foxhound101
  • · Replies 6 ·
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6

New Angular Velocity of Star with Diameter Shrink to 0.17 Times

  • Naldo6
  • · Replies 3 ·
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3

Cannon shot on airless planet with x gravity

  • Mugen112
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1
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3
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1

How Do You Calculate Electric Potential Near a Proton?

  • shinobi12
  • · Replies 1 ·
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1

Calculate the work done by the frictional force

  • Bones
  • · Replies 16 ·
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16

How Do Lorentz Transformations Affect Measurements of Time and Distance?

  • Frillth
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1
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1

Solve Momentum Puzzle: Recoiling Cannon

  • Awwnutz
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1

Can You Solve This 2D Equilibrium Problem with a Pirate on a Plank?

  • Oblivion77
  • · Replies 2 ·
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2

Which Set-up Has Greater Acceleration?

  • Robershky
  • · Replies 7 ·
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7
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8

Neutron-Atom Collision: Energy Transfer

  • bgil1989
  • · Replies 1 ·
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1

How far does a freely falling object travel in its 3rd second?

  • wheeljeeper
  • · Replies 2 ·
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2

How Do You Calculate the Tension in Cords with Varying Angles and Loads?

  • anteaters
  • · Replies 3 ·
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3

Conservationof energy and angular speed

  • CornMuffin
  • · Replies 6 ·
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6

How Fast Is a Ball Rolling Down an Incline After 1.50 M?

  • Naldo6
  • · Replies 2 ·
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2

Direct Current Circuits and automobile battery

  • blakmamba619
  • · Replies 8 ·
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8

How Far is the Spring Compressed by the Sliding Block?

  • Bones
  • · Replies 18 ·
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18

How much energy does it take to climb stairs?

  • uno
  • · Replies 2 ·
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2

Displacement from angle and initial velocity

  • Planefreak
  • · Replies 1 ·
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1

Why Does Kinetic Friction Apply When a Box Starts Sliding Down an Incline?

  • fishingspree2
  • · Replies 1 ·
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1

Speed and centripetal acceleration of a stone in a sling

  • physics_geek
  • · Replies 4 ·
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4

Centripetal force in a washing machine, car, and ball toss

  • sarahxesia.
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1

AZING! Can a 56Fe Nucleus Fission into Two 28Al Nuclei Spontaneously?

  • fredrick08
  • · Replies 4 ·
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4

Calculating Initial Velocity of a Projectile Using Free Fall Equations

  • a18c18
  • · Replies 9 ·
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9

Finding acceleration and internal force in a chain of three links

  • iluvphys
  • · Replies 9 ·
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9

How Many Sodium Atoms Remain in the 3p State After 10ns?

  • fredrick08
  • · Replies 3 ·
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3

Orbital mechanics: Io, white dwarf, Milky Way, and Earth satellite

  • smw1016
  • · Replies 4 ·
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4

Work pulling a 306 kg hanging crate 5.7 m horizontally

  • TJDF
  • · Replies 7 ·
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7

What is the Speed of The Rocket at the Carnival?

  • splac6996
  • · Replies 11 ·
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11
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2

Determining the magnitude of the charge (Coulombs Law)

  • meeklobraca
  • · Replies 17 ·
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17

Angular velocity when beads on rotating rod start to slip

  • Kudo Shinichi
  • · Replies 3 ·
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3

How Do You Calculate Impedance in a Series RLC Circuit?

  • Kris1120
  • · Replies 2 ·
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2

Minimum angular velocity for the Rotor ride with friction coefficient 0.5

  • Kudo Shinichi
  • · Replies 4 ·
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4
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6

Electric field from a gaussian pillbox in an infinite slab of thickness 2d

  • indigojoker
  • · Replies 9 ·
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9

Concept Questions regarding Work

  • TJDF
  • · Replies 1 ·
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1

How Do You Solve a 3D Moment Problem?

  • ricky_fusion
  • · Replies 6 ·
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6

Free body diagram (centripetal force)

  • dnt
  • · Replies 6 ·
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6

Kinetic Friction To Find Acceleration

  • tater08
  • · Replies 7 ·
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7

Gauss's Law long thin wire question

  • TFM
  • · Replies 38 ·
2
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38

Board pulled out from under a box

  • aligass2004
  • · Replies 5 ·
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5
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1

Normal distribution (Physics Lab)

  • Oerg
  • · Replies 1 ·
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1

Finding the coefficient of kinetic friction and work

  • leafeater47
  • · Replies 2 ·
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2

Finding resonant modes in a rectangular microwave cavity

  • strugglingstu
  • · Replies 1 ·
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1

How to measure the intensity of Infra red

  • MMorris
  • · Replies 1 ·
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1

Acceleration as a Function of Distance

  • bollocks748
  • · Replies 1 ·
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1
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1

Why Does My Spin Chain Energy Calculation Differ from the Textbook?

  • jorgen
  • · Replies 1 ·
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1

Compressed Air Bottle Rocket (Variable Mass)

  • Aftermarth
  • · Replies 5 ·
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5

Relating spring constant, mass and angular frequency in SHM

  • theneedtoknow
  • · Replies 10 ·
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10

Does wavelength or frequency define the color of visible light?

  • Gear300
  • · Replies 5 ·
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5

What is the impulse delivered by the floor in a 2D bounce pass?

  • xthursday
  • · Replies 1 ·
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1
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1

Finding the horizontal distance that the cork flew

  • jheld
  • · Replies 1 ·
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1

Does the maxima separation remain constant for all values of m?

  • tony873004
  • · Replies 2 ·
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2

Kinetic Energy: Calculating with a Bowling Ball

  • Naldo6
  • · Replies 1 ·
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1

Contact forces between three blocks pushed horizontally

  • anteaters
  • · Replies 1 ·
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1

Calculating Magnetic Field with Helmholtz Coils

  • sheri1987
  • · Replies 1 ·
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1

Angular Aceleration of Cilynder

  • Naldo6
  • · Replies 2 ·
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2

Webpage title: Calculating Forces on a Moving Box with a String at an Angle

  • veronica_pr
  • · Replies 1 ·
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1

Solve Kinematics: Find Time of Fall for Object Dropped at 12 m/s

  • babyblue
  • · Replies 2 ·
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2

Finding displacement during braking with constant acceleration

  • austin1250
  • · Replies 4 ·
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4

Solving the Pendulum Problem: An Overview

  • tapeworm
  • · Replies 3 ·
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3
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25

Angular Velocity of a neutron start

  • big time
  • · Replies 1 ·
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1

The pushed box with kinetic friction and an inital speed

  • NastyAccident
  • · Replies 1 ·
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1

Calculating Average Force in a Ball Rebound Momentum Problem

  • lmc489
  • · Replies 1 ·
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1
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2

Projectile motion beer slide problem

  • haydn
  • · Replies 4 ·
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4

Calculating Tension in Multiple Cords for Suspended Object - 250N Weight

  • aligass2004
  • · Replies 12 ·
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12

DIFFRACTION PROBLEM (physics lab)

  • mjsteves
  • · Replies 1 ·
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1
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1

Acceleration due to Gravity: calculate initial velocity

  • Archedcutie
  • · Replies 3 ·
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3

Projectile motion: keys thrown horizontally from a cliff

  • shoez
  • · Replies 2 ·
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2

Induced emf in secondary coil with solenoid current change

  • jcvince17
  • · Replies 14 ·
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14

Centripetal Acceleration Space Shuttle Problem

  • C^2
  • · Replies 1 ·
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1

Calculating the Force Needed to Lift a 700 lb Car with a Hydraulic Jack

  • designer rose
  • · Replies 1 ·
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1