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.

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2

A test question that has been bugging me all day.(cant figure it out)

  • HappMatt
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Hammer: Lever Type 2 for Greater Mechanical Advantage (IMA= dl/de)

  • furia
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Finding force when given momentum

  • avb203796
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5

Tiny question on differential (?) equations.

  • Lisa...
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2

Help with gaussian surface problems

  • maria curie
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4

How do I go about finding the ratio of the electric force?

  • atomant
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3
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The Electric Flux through a Cube with a Uniform Electric Field

  • badtwistoffate
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8

Calculating Angular Acceleration of a Rotating Disk

  • nahya
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5

What Is the Potential at an Infinite Uniformly Charged Line?

  • ExtravagantDreams
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Gravitational Force: Sun vs Earth

  • atomant
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5

Length in relation to fusing current

  • mrshoaib
  • · Replies 27 ·
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27

Calculate Weight of 1.0 kg Mass on Earth's Surface

  • rachael
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What are the forces acting on an object sliding down a hill?

  • sauri
  • · Replies 12 ·
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12

After Ball Launch: How High Does It Reach?

  • sauri
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Calculating Acceleration and Tension in Vertical Circular Motion

  • rachael
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Pulling a sled, work, and tension

  • ebeck1
  • · Replies 15 ·
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15

Unit of work in mechanics and thermo dynamics

  • chandran
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3

Calculating the Angle of Projection for a Fired Cannon Shell

  • rukawa1107
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Calculating Plane's Work and Force on Aircraft Carrier

  • ajc9387
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1

Calculating Wavelength of Photons Emitted in H2 Molecule Transitions

  • alfredbester
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Solving Momentum Change Problem: Canoe & Girl's Distance to Shore

  • Huskies213
  • · Replies 5 ·
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Parallel plate capacitor with two dielectric layers

  • Punchlinegirl
  • · Replies 8 ·
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8

Calculate the density of plutonium

  • kidia
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3

Can Volume and Linear Charge Densities Be Interchanged in Calculations?

  • MtHaleyGirl
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Ski jumper projectile motion with landing velocity and displacement

  • Finns14
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What is one advantage of transferring energy by electromagnetic waves?

  • LezardValeth
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Ski jumper projectile motion with landing velocity and displacement

  • Finns14
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Can Two Identical Batteries Power Two Bulbs as Brightly as One?

  • nophun6
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Why Is Zero the Upper Limit in Escape Velocity Derivation?

  • shaan_aragorn
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Solving the Hinged Stick Problem for Time-Based Angular Acceleration/Speed

  • jdlawlis
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3

How Long to Walk Off a Light Bulb's Energy?

  • edal01
  • · Replies 8 ·
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8

Field and Orbital Frequency Calculation

  • brad sue
  • · Replies 2 ·
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Electric field of coax cable problem

  • Punchlinegirl
  • · Replies 2 ·
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Parallel plate capacitor electric charge

  • Punchlinegirl
  • · Replies 3 ·
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3

Orbital simulator and non fixed orbit

  • FLOUR
  • · Replies 1 ·
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1

Popsicle stick bridge competition: maximizing strength-to-weight ratio

  • marshmallowchicken
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4

How Quickly Does a Spring's Restoring Force Counteract Applied Force?

  • chandran
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2

Why is a paper falling slower than a heavier object?

  • jrm2002
  • · Replies 7 ·
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7

How Does Building Height Affect Resonance During Earthquakes?

  • bob4000
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1

What is the magnitude of the net acceleration of the object

  • tsoya
  • · Replies 15 ·
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15

Comparing baseball and climbing helmets using Newton's laws

  • CityNoise
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Work Done on a Block Dropped onto a Spring

  • mb85
  • · Replies 4 ·
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Internal energy and specific heat

  • something_about
  • · Replies 7 ·
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How Do You Calculate Current in a Car's Rear Window Heater Circuit?

  • dan greig
  • · Replies 3 ·
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3

Power Required to Charge 10.7 μF Capacitor to 0.513 J in 43s

  • Punchlinegirl
  • · Replies 3 ·
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3

How Strong Is the Electric Field 1 Meter Away From a 100 Watt Light Bulb?

  • dowjonez
  • · Replies 1 ·
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How do I calculate the final temperature when dropping ice into water?

  • dan greig
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2

How Did Galileo's Lantern Experiment Attempt to Measure the Speed of Light?

  • Flyfishinva
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Determine the magnitude and direction of the force problem

  • wazzup
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Calculating Mu from a counterbalanced inclined plane

  • Sadoian
  • · Replies 1 ·
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How go u find the force of gravity?

  • SimpleHarmonicMotion
  • · Replies 17 ·
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17

Math Model for Archer Fish Spitting Water at Insect

  • atomant
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Skydiving: No Sinking Stomach Feeling?

  • dtmmfam
  • · Replies 2 ·
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Properties of waves switching mediums?

  • waffle23
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How do I calculate heat of fusion from a heating curve graph?

  • metalmagik
  • · Replies 22 ·
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22

Minimum Car Deceleration to Avoid Collision: Solving a Confusing Highway Problem

  • MrRottenTreats
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Shooting a rifle at a target 40 m high and 1500 m away

  • taffman123
  • · Replies 43 ·
2
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Really getting started precal, physics problem

  • bennett
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3

Width of Pinhole Camera Aperture for 12cm Spot Light

  • G01
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2

Finding Potential Energy of a Particle in a Region of Space

  • Tony11235
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Soldier falling from helicopter: where does mass factor in?

  • N_L_
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Jet car accelerating 600 kg with engine force and friction

  • albaboi123
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2

What Is the Period of Oscillation for Two Masses Connected by a Spring?

  • dowjonez
  • · Replies 4 ·
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4

Relationship between momentum,KE and internal energy

  • something_about
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Projectile Motion of sniper shot

  • Hadjiev
  • · Replies 27 ·
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27

How Does a Thin Glass Affect the Double Slit Interference Pattern?

  • G01
  • · Replies 1 ·
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Diffraction grating wavelength: getting 1000nm instead of 500nm

  • G01
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3

charged particle motion in magnetic and electric fields

  • NutriGrainKiller
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2

Circuit that converts a triangular wave potential waveform

  • mohlam12
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Adding up capacitors in series/parelle, the book got a slighty diff answer?

  • mr_coffee
  • · Replies 6 ·
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6

Solving Laser Diffraction with Helium-Neon Laser

  • G01
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Can Electric Forces Cancel with Opposite and Like Charges?

  • wazzup
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2

Momentum Concepts: Clearing Up Frictionless Surfaces Questions

  • Huskies213
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Light from Sun to Earth in seconds

  • Zack
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2

Energy loss rate in damped pendulum and motion of forced rod

  • Frobar
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3

How Do You Calculate Capacitance with Two Different Dielectrics?

  • Brewer
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1

Why Does a Local Minimum in Potential Energy Indicate Higher Stability?

  • Bhargav
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1

SUVAT Equations: AS Exam Prep for OCR Physics

  • Killah
  • · Replies 1 ·
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1

Applications of Gauss's Law for a hydrogen atom

  • Brewer
  • · Replies 8 ·
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8

Interference pattern with different wavelengths at each slit

  • aehardin
  • · Replies 1 ·
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1

How do electric and magnetic fields affect the motion of an electron?

  • brad sue
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1
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Expression for V as a function of radius?

  • Mimi
  • · Replies 8 ·
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8

Minimum angular speed for a spinning ring to precess on a vertical rod

  • Päällikkö
  • · Replies 8 ·
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Finding the components of this vector

  • opticaltempest
  • · Replies 1 ·
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Force on object with position functions

  • EbolaPox
  • · Replies 6 ·
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6
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2

Converting 730 mmHg to pascals using the pressure formula

  • xyz123
  • · Replies 6 ·
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Calculating E in a hemispherical shell using Coulomb's law

  • Lisa...
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Focal length for projecting a 35 mm slide onto a 1.8×2.7 m screen

  • yeyspaz
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Problem in mechanics involving a pulley

  • Bhargav
  • · Replies 6 ·
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Angular and Linear Velocity Calculations

  • Britannia
  • · Replies 2 ·
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2
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How Do You Calculate the Speed of a Block Launched by Compressed Springs?

  • pureouchies4717
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How Does Squaring Final Velocity Impact Spring Problem Solutions?

  • pureouchies4717
  • · Replies 4 ·
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Why Does the Magnetic Field at Point P Point Into the Page?

  • student85
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Will a tightly stretched hammock break more easily than a sagging one?

  • cutie05
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What Is the Trajectory of an Object Dropped from an Airplane?

  • cutie05
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