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 Oscillation Periods for a Floating Cylinder

  • smithg86
  • · Replies 6 ·
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6

What is the average force exerted on a baseball during a pitch?

  • XPX1
  • · Replies 14 ·
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14

Calculating Specific Gravity in Water

  • davidatwayne
  • · Replies 3 ·
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3
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4

How to Find Distance from a Velocity-Time Graph

  • mindgame
  • · Replies 5 ·
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5

Finding net displacement of jogger using graphical method

  • JMWM
  • · Replies 6 ·
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6

Finding net force on a 300 N wagon accelerating at 0.5 m/s²

  • Makaroon
  • · Replies 6 ·
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6

Momentum and acceleration due to gravity

  • pharaoh
  • · Replies 4 ·
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4

Calculating Jump Time of a Star in the Long Jump

  • Makaroon
  • · Replies 2 ·
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2

Why estimate measurements to half the least count

  • junior_J
  • · Replies 2 ·
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2

Finding Speed to Push Cart up Hill

  • ReoFonzo
  • · Replies 5 ·
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5

Tractor and pulleys - expression of speed

  • sofija
  • · Replies 3 ·
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3

Question 3: What is the net force on a toy locomotive at t=3s?

  • LezardValeth
  • · Replies 2 ·
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2

What is the angular speed of the cylinder when hit by a clay ball?

  • lizzyb
  • · Replies 6 ·
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6

Calculating Moon's Acceleration in Circular Motion Relative to Sun

  • robgazza
  • · Replies 7 ·
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7

Understanding Coriolis Force Dependency on Latitude

  • covers
  • · Replies 11 ·
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11
  • Poll Poll

Is There a Link Between Hair Color and Telepathy in GCSE Physics?

  • scooby7
  • · Replies 25 ·
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25

When voltage and current are in phase in an RLC circuit?

  • HookedOnPhysics
  • · Replies 2 ·
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2

Significant figures/rounding what the heck.

  • dontdisturbmycircles
  • · Replies 6 ·
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6
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3

How Do You Calculate the Depth in This Hydrostatics Problem?

  • ceulmad
  • · Replies 7 ·
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7

Angular width of diffraction pattern from eyelashes in green light

  • tigerguy
  • · Replies 7 ·
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7

Atomic physics - nuclear fission

  • lingling
  • · Replies 3 ·
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3

Atomic physics - reaction and energy

  • lingling
  • · Replies 2 ·
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2

What is the Mass Ratio of Alpha Particles, Neutrons, and Gamma Rays?

  • lingling
  • · Replies 3 ·
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3
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2

Forces at Play in Geiger-Marsden Alpha Particle Scattering

  • lingling
  • · Replies 1 ·
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1

Heat transfer from water to oil

  • tup
  • · Replies 3 ·
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3

Finding final velocity from a fall

  • lzh
  • · Replies 11 ·
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11

Friction and torque of ladder resting on wall

  • SA32
  • · Replies 2 ·
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2

What Image Forms with an Object Two Focal Lengths from a Diverging Lens?

  • sapiental
  • · Replies 1 ·
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1

How Do You Solve AP Physics C Mechanics 2002 Free Response Problem 2?

  • cokezero
  • · Replies 8 ·
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8
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2

Max mass m2 for cylinder rolling without slipping with pulley system

  • ecksee
  • · Replies 4 ·
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4

Problem in a non-inertial frame

  • coolguy
  • · Replies 18 ·
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18

Calculating Temperature Change of Steel Strut in Submarine

  • BunDa4Th
  • · Replies 8 ·
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8

Grade 11 homework: electrical force, resistance, and magnetism questions

  • ehjay01
  • · Replies 4 ·
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4

Where does energy go as a ball rolls down and up a slope?

  • ReoFonzo
  • · Replies 18 ·
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18

How Does Temperature Affect the Density of Helium Gas?

  • BunDa4Th
  • · Replies 3 ·
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3

Hydrostatic pressure (basic basic stuff)

  • mbrmbrg
  • · Replies 5 ·
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5

How does engine work relate to gasoline energy content?

  • ReoFonzo
  • · Replies 8 ·
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8

Why Is My Calculated Centripetal Acceleration So High?

  • Onjikaruto
  • · Replies 8 ·
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8

Electric Fields in Millikan's experiment

  • Forceflow
  • · Replies 1 ·
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1

What is the Energy Transfer in a Spring and Oscillation Collision?

  • parwana
  • · Replies 5 ·
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5

Solving for Meteor's Speed: Unknown Speed!

  • DaxInvader
  • · Replies 4 ·
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4

Arc distance traveled by point on accelerating wheel

  • bosox3790
  • · Replies 2 ·
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2

How Do You Calculate Angular Acceleration and Mass in Physics Problems?

  • skyhigh302
  • · Replies 4 ·
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4

Where is the 5.50 N force applied along the meter stick?

  • Adanne
  • · Replies 2 ·
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2

Magnetic disk acceleration and revolutions through two phases

  • fsm
  • · Replies 9 ·
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9

Calculating Horizontal Force of a Bicycle Tire

  • Fusilli_Jerry89
  • · Replies 15 ·
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15

Removing Infinitesimal Mass Elements from a Hollow Sphere

  • PSOA
  • · Replies 7 ·
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7

Loss of Mechanical Energy after Collision

  • lizzyb
  • · Replies 6 ·
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6

Find angle (Projectile Motions)

  • Stingarov
  • · Replies 7 ·
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7

How Do You Calculate the Frequency of Oscillation for a Massless Spring?

  • DizBelieF14
  • · Replies 13 ·
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13

Water wave speed in two regions using Snell's law

  • kevykevy
  • · Replies 1 ·
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1

Finding Mass: Calculating Friction & Motion

  • chenny
  • · Replies 1 ·
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1

What is the mass of the block of ice?

  • chrispsu
  • · Replies 2 ·
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2

Ideal Gas Law Helium balloon Problem

  • chrispsu
  • · Replies 18 ·
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18

2 blocks one over the edge with a pulley

  • vivitribal
  • · Replies 28 ·
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28

Moment of inertia of triangular prism

  • HHveluj
  • · Replies 1 ·
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1

Setting up an optical sensor with a dot sequence

  • confuzzled1
  • · Replies 6 ·
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6

Energy problem - Chain on low friction surface.

  • sixstringartist
  • · Replies 5 ·
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5

Frictional Energy: Solving for Air Resistance

  • gloryrentgirl
  • · Replies 2 ·
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2

Classical Mechanics and Net Displacement

  • Nicol
  • · Replies 7 ·
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7

Elastic collision between white and red pool balls with different masses

  • aeroengphys
  • · Replies 4 ·
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4

What Factors Affect the Condensation Temperature of Water?

  • JESSICA
  • · Replies 4 ·
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4

What Is the Maximum Speed to Keep the Flywheel's Wheels on Track?

  • Kmaster
  • · Replies 5 ·
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5

Simple Harmonic Motion of Inverted Simple Pendulum with a Helium Balloon

  • Touchme
  • · Replies 2 ·
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2

Train whistles at the same speed produce 4.60 Hz beats

  • buttterfly41
  • · Replies 2 ·
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2

Mercury U Tube Problem: Solving for Height with Fluid Physics

  • twotaileddemon
  • · Replies 27 ·
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27

Calculating Net Force on an Otter Using Newton's Second Law

  • apples
  • · Replies 13 ·
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13

How Does Rotor Diameter Affect Wind Power Output?

  • The Guv.
  • · Replies 3 ·
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3
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3

Initial Velocity and Projectiles

  • fyzikschik
  • · Replies 3 ·
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3

Why does F=ma and what is mass?

  • enricfemi
  • · Replies 4 ·
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4

Change In Momentum With No Loss Of Ke

  • studentmom
  • · Replies 3 ·
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3

Convservation of Mech. Energy/Momentum

  • AznBoi
  • · Replies 2 ·
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2

Calculating Yo-Yo Acceleration, Velocity, and Frequency

  • Icheb
  • · Replies 3 ·
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3

Finding the 3 Axes of a Sakai Gyro

  • Icheb
  • · Replies 2 ·
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2

Question On A Problem Don't Agree With Teacher

  • PClark02
  • · Replies 1 ·
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1

Generic KE problem with a twist.

  • Fungiefips
  • · Replies 1 ·
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1

How Do You Calculate Oscillation Frequency for a Mass with Two Springs?

  • TDAWG12489
  • · Replies 1 ·
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1

Momentum and Collisions with a Spring

  • catenn
  • · Replies 1 ·
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1

Solve Rotational Problem: Find Disc Velocity as Function of Time

  • MikkelR
  • · Replies 1 ·
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1

Jet airplane (sound waves) problem

  • kbyws37
  • · Replies 5 ·
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5

Box on ramp needs coefficient of friction to compare forces

  • PClark02
  • · Replies 10 ·
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10

How Many Cylinders Are Needed to Fill a Hydrogen Balloon?

  • woox
  • · Replies 1 ·
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1

Why Is the Ball's Energy -196 J at the Bottom of the Well?

  • CodeWebs
  • · Replies 27 ·
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27

Generally, how do you solve physics problems?

  • AznBoi
  • · Replies 19 ·
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19

What Is the Tension in the Remaining String After Cutting One Support?

  • franniemeow07
  • · Replies 2 ·
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2

Spring force and velocity for ball in vertical circular motion

  • sixstringartist
  • · Replies 3 ·
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3

Thermodynamics compressor Question

  • Jason Brooks
  • · Replies 3 ·
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3
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13

What is the correct maximum altitude and flight time calculation for a rocket?

  • Coffeepower
  • · Replies 4 ·
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4

Quantum numbers, Bohr model calculations, and electron diffraction

  • smity711
  • · Replies 1 ·
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1

Compression of a Spring on an Asteroid?

  • smedearis
  • · Replies 6 ·
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6

What Is the Linear Acceleration of a Sphere Rolling Down an Incline?

  • rleung3
  • · Replies 3 ·
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3

M-How to calculate force on a surface due to a beam of particles?

  • debwaldy
  • · Replies 3 ·
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3

Centripetal force Rotor-ride problem

  • Gauss177
  • · Replies 6 ·
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6

Some questions concerning centripetal force.

  • wtf_albino
  • · Replies 8 ·
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8