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

Find minimum force to tip block

  • vu10758
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4

Calculating Electric Forces with Dangling Objects

  • Cory
  • · Replies 15 ·
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15

Find Speed of Blocks w/ Pulley & Spring

  • BSCS
  • · Replies 10 ·
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10

Understanding Spring Forces: Net Force and Spring Scale Readings

  • turdferguson
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4

Tumble dryer basket rotation rate from clothes falling angle

  • 8parks11
  • · Replies 14 ·
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14
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2

What is the speed of a car traveling over a hill?

  • wallercp
  • · Replies 2 ·
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2

People jumping in the air simultaneously

  • rottentreats64
  • · Replies 7 ·
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7

What Does x' Represent in Electric Field Equations?

  • charlotty
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1

Projectile Motion (ignore previous thread)

  • ch3570r
  • · Replies 3 ·
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3

Projectile Motion I think I need some equations

  • ch3570r
  • · Replies 4 ·
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4

I'm New And I Have A Couple Questions For Grade 12 Physics

  • livvy
  • · Replies 5 ·
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5

How Is Torque Calculated on a Triangular Plate with Pivoted Forces?

  • Soaring Crane
  • · Replies 4 ·
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4

Gravitational Potential Energy and Springs

  • Soaring Crane
  • · Replies 1 ·
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1

What is the Period of Revolution for a Triple Star System?

  • chaose
  • · Replies 2 ·
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2

Pool ball hits table, find an angle

  • mbrmbrg
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1

Two Falling Stones and Their Center of Mass

  • mbrmbrg
  • · Replies 2 ·
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2

Torque and angular momentum in golf swing analysis

  • nelson_gslc
  • · Replies 1 ·
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1

Static equilibrium and a ladder

  • vu10758
  • · Replies 1 ·
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1

Does Light Speed Vary by Color?

  • yipkawa
  • · Replies 1 ·
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1

Calculating Gravitational Force on a Point Mass in a Semicircular Rod

  • pete06
  • · Replies 2 ·
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2
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11

Density of floating object 14% submerged in water at 0°C

  • trickymax301
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1
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1
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2

Circular Motion, and Conservation of Energy problem

  • leighzer
  • · Replies 1 ·
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1

Torque acting on a small plane during a looping

  • fara0815
  • · Replies 5 ·
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5

Block sliding down incline then across horizontal surface with friction

  • leighzer
  • · Replies 7 ·
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7

How Much Force Must a Fireman Exert to Hold a Steadily Ejecting Hose?

  • zaguar
  • · Replies 4 ·
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4

Speed of plane in circular bank given diameter and angle

  • courtney1121
  • · Replies 3 ·
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3

Static friction on cars rounding curves with different masses and speeds

  • courtney1121
  • · Replies 10 ·
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10

Calculating the Physics of a Windlass System

  • Dep87
  • · Replies 1 ·
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1

I hope this helps.How high did this athlete jump?

  • cy19861126
  • · Replies 9 ·
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9

How Does the Normal Force Compare to the Car's Weight in a Circular Valley?

  • courtney1121
  • · Replies 1 ·
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1

Will the heat shield material survive shuttle reentry without exceeding 4000K?

  • courtney1121
  • · Replies 12 ·
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12

Find angular velocity using angular momentum

  • vu10758
  • · Replies 3 ·
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3

Finding the Distance for Static Equilibrium of a Suspended Rod

  • flash2
  • · Replies 4 ·
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4

Calculate Angular Momentum of 2kg Object at Time t

  • vu10758
  • · Replies 1 ·
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1

Archimedes's Principle or something

  • ayudame
  • · Replies 4 ·
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4

How Do Magnetism and Electric Fields Interact in Physics Problems?

  • jekch85
  • · Replies 4 ·
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4

EASY PROBLEM - Force to break the string.

  • 8parks11
  • · Replies 5 ·
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5

A packet is dropped from the window

  • Aladin
  • · Replies 8 ·
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8

Solving sec²x·tan²x = 2

  • donjt81
  • · Replies 1 ·
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1

Centripetal force on a 2000 kg car rounding a 175 m curve at 50 km/h

  • 8parks11
  • · Replies 7 ·
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7

Why Did Ancient Roman Towns Have Fountains Before Water Distribution?

  • Greek2Me
  • · Replies 1 ·
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1

What is the Designed Speed for a 100 m Radius Curve Banked at 68 Degrees?

  • 8parks11
  • · Replies 2 ·
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2

How Does Partial Insertion of a Dielectric Affect Capacitor Voltage?

  • vthang05
  • · Replies 1 ·
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1

Horizontal Harmonic motion and Springs

  • mmiller39
  • · Replies 1 ·
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1
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1

Is It Possible for a Cylinder to Roll Freely Without Slipping?

  • Soaring Crane
  • · Replies 10 ·
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10

How Do You Calculate Mass Flow Rate in a Pressurized Tank?

  • Soaring Crane
  • · Replies 6 ·
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6

Why Is the Displacement Graph Parabolic in a Ticker Tape Experiment?

  • Missy81590
  • · Replies 2 ·
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2

Physical pendulum and meter stick

  • bearhug
  • · Replies 1 ·
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1

How Does Distance Affect Decibel Levels in Sound Propagation?

  • gh0st
  • · Replies 1 ·
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1

Kinetic Energy, Force, and Collisions

  • Soaring Crane
  • · Replies 1 ·
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1
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5

Calculating Acceleration of a Sphere Thrown Upward

  • ch3570r
  • · Replies 5 ·
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5

Surface Gravity of a Neutron Star

  • scoles
  • · Replies 1 ·
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1

What is the Force Exerted by a Gas on a Container Wall?

  • auslmar
  • · Replies 2 ·
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2

Maximum elevator speed with 1.6g force limit over 3m

  • physstudent1
  • · Replies 2 ·
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2

Find the distance the car travels before it stops

  • scoles
  • · Replies 2 ·
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2

What Is Magnitude and How Is It Calculated?

  • josher1289
  • · Replies 1 ·
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1

How Fast Must an Object Travel to Reach 80 Meters High?

  • ch3570r
  • · Replies 5 ·
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5

Spring constant needed to complete a loop in a pinball machine

  • dan_c_101
  • · Replies 6 ·
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6

Timekeeping Changes with Temperature: Pendulum Clock at 1°C

  • starfish794
  • · Replies 1 ·
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1

Net work done by 50N push on wheelbarrow with 43N friction

  • josher1289
  • · Replies 2 ·
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2

Block moved by spring - Determine speed

  • starfish794
  • · Replies 3 ·
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3

Net work done by forces on a wheelbarrow

  • josher1289
  • · Replies 1 ·
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1

Calculating Total Energy of Block-Spring System

  • trickymax301
  • · Replies 3 ·
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3

Head-on Proton Collision: Finding Speed

  • kevykevy
  • · Replies 3 ·
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3

Intensity of sound and pain level

  • needhelp83
  • · Replies 4 ·
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4

Frequency of violin string fingered one third down

  • needhelp83
  • · Replies 5 ·
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5

Net gravitational force on a mass at a corner of a square

  • huh
  • · Replies 3 ·
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3

Photon Reflection & Transmission: Calculating Probabilities

  • kingyof2thejring
  • · Replies 1 ·
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1

Satellite (Gravitation) Question

  • Destrio
  • · Replies 4 ·
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4

Net electric field at the center of an equilateral triangle with charges

  • kevykevy
  • · Replies 3 ·
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3

How would i derive the equation?

  • Tensaiga
  • · Replies 3 ·
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3

Power of a wave at a specific point

  • lizzyb
  • · Replies 2 ·
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2

Impulse magnitudes in head-on sphere collision

  • blackout85
  • · Replies 3 ·
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3

Calculating Rotational Velocity and Force on a Loop-the-Loop Track

  • cd80187
  • · Replies 10 ·
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10

Energy of Oscillation for a Small Line Segment

  • lizzyb
  • · Replies 6 ·
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6
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1

Calculating Moment of Inertia of Long, Thin Rod w/ Varying Mass Density

  • factor
  • · Replies 1 ·
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1

Ate of energy transfer by sinusoidal waves on a string q

  • lizzyb
  • · Replies 2 ·
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2
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1

Constant velocity and the coefficient of kinetic friction

  • kinthos
  • · Replies 5 ·
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5
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2
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6
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2

What is the Mass of the Uniform Disk Used as a Cam on a Vertical Shaft?

  • Soaring Crane
  • · Replies 2 ·
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2

Maximum Applied Force for No Slippage in Angular Motion

  • nocloud
  • · Replies 11 ·
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11

Gravitational Attraction at Equator

  • Felin
  • · Replies 1 ·
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1

Solving: secx=-5.2, 0≤x≤2π: Why Only 1 Answer?

  • Destrio
  • · Replies 1 ·
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1
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1

Can you cool off the kitchen by leaving the refrigerator door open?

  • AzMaphysics
  • · Replies 9 ·
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9

Force on an electron from changing magnetic field

  • edlin
  • · Replies 3 ·
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3

Centripetal Force, Tension, Circular Motion

  • twotaileddemon
  • · Replies 13 ·
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13

Is Launching a Satellite Eastward More Efficient Due to Earth's Rotation?

  • Soaring Crane
  • · Replies 2 ·
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2

Satellite question. find mass of planet and weight on planet?

  • physics1007
  • · Replies 2 ·
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2

Why do longer barrels increase projectile velocity in superguns?

  • Soaring Crane
  • · Replies 5 ·
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5