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

How Do You Calculate Charge and Radius from Maximum Potential?

  • feelau
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Which factors affect projectile range on a flat plain

  • shinystar716
  • · Replies 4 ·
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4

What is the Velocity of the River's Current?

  • future_vet
  • · Replies 2 ·
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2

Electric Field Between Oppositely Charged Parallel Plates

  • Soaring Crane
  • · Replies 1 ·
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1

Capacitance of a system of 3 concentric spheres

  • Anthony
  • · Replies 1 ·
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1

Does Converting Measurement Units Affect Error Values?

  • LikwidN2
  • · Replies 1 ·
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1

Describe Charge Distribution on Spheres After They Touch

  • opticaltempest
  • · Replies 3 ·
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3

Calculating Fmax in a Tennis Ball Collision

  • macgirl06
  • · Replies 2 ·
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2

Cylindrical Shells and Gauss' Law

  • Soaring Crane
  • · Replies 1 ·
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1

Why does a satellite speed up when atmospheric drag lowers its orbit?

  • crossfacer
  • · Replies 6 ·
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6

Shear Stress due to Laminar flow

  • ice87
  • · Replies 2 ·
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2

How Do You Calculate Average Speed in Kinematics?

  • Mach
  • · Replies 6 ·
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6

Derivation of gauss's law for electrical fields

  • Ragnar
  • · Replies 2 ·
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2

Why do objects fall at the same rate on the Moon and Earth?

  • aerogurl2
  • · Replies 16 ·
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16

Does Turning Off the Lamp on a Push Bike Increase Coasting Distance?

  • pivoxa15
  • · Replies 3 ·
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3

Fluid Mechanics: Water leak in a water tower

  • mattst88
  • · Replies 1 ·
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1

What is the current in the cell during that period?

  • BunDa4Th
  • · Replies 7 ·
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7

How Do You Calculate Minimum Height for a Steel Boat to Float?

  • CaityAnn
  • · Replies 1 ·
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1

What Is the Gravitational Potential on the Moon's Surface?

  • crossfacer
  • · Replies 2 ·
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2

Calculating Full-Scale Deflection for Weakened Magnetic Field?

  • pivoxa15
  • · Replies 2 ·
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2

Normal Force in Water and Finding Density

  • CaityAnn
  • · Replies 6 ·
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6

Experimental Proof of Electrical Charge

  • prace
  • · Replies 1 ·
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1

How is Muon Speed Derived from Pion Decay Using Special Relativity?

  • abeboparebop
  • · Replies 2 ·
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2
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2

Spherical Shells and Gauss' Law

  • Soaring Crane
  • · Replies 4 ·
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4
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1

Firing a projectile, max height + flight time

  • future_vet
  • · Replies 13 ·
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13

Spheres, Plates, and Gauss' Law

  • Soaring Crane
  • · Replies 2 ·
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2

Electric Field and Conductor Properties

  • Soaring Crane
  • · Replies 9 ·
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9
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3

What did Newton destroy beyond repair?

  • riddlingminion
  • · Replies 4 ·
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4

Tension of a rope holing a mass on an inclined plane

  • Rasine
  • · Replies 2 ·
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2

Solve Elevated Golf Ball Launch Velocity: Vy Expression

  • vntraderus
  • · Replies 1 ·
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1

Calculating Force of n Particles in R-l Container

  • MMD
  • · Replies 1 ·
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1

Coulombs Law and electrostatic force

  • mb85
  • · Replies 3 ·
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3

How does buoyant force relate to weight and pressure?

  • ritwik06
  • · Replies 5 ·
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5

Finding the current across a resistor

  • Decan
  • · Replies 13 ·
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13

Understanding Freely Falling Bodies: The Relationship Between S and t^2

  • ritwik06
  • · Replies 3 ·
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3

What is the reaction force when hammering a nail?

  • ritwik06
  • · Replies 6 ·
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6

How Do You Calculate the Holding Force of a Water Nozzle?

  • techninja
  • · Replies 2 ·
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2

Identifying the north pole of a bar magnet without another magnet

  • pivoxa15
  • · Replies 9 ·
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9

Vector problem with electricity

  • buttterfly41
  • · Replies 1 ·
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1

Electricity, Electic Force, and Charge Transfer

  • Kaoi
  • · Replies 15 ·
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15

Friction Force: 2 Wheels vs 4 Wheels - Spoon

  • ||spoon||
  • · Replies 3 ·
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3
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8

How Do You Calculate the Focal Length of a Plane Convex Lens?

  • Lemmy
  • · Replies 9 ·
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9

Minimum distance between two cars to avoid collision

  • s4orce
  • · Replies 8 ·
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8

How to calculate resultant vector angle?

  • euphtone06
  • · Replies 3 ·
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3

Circular Motion and Friction of a coin

  • pinkpolkadots
  • · Replies 5 ·
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5

How Long Does It Take for an Object to Fall from Height h?

  • whaler
  • · Replies 12 ·
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12

Finding magnitude and direction of vector with Vx = 6.80 and Vy = -7.40

  • future_vet
  • · Replies 2 ·
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2

Coefficient of Friction Problems (Beginner Physics)

  • rwishka
  • · Replies 2 ·
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2

Resultant Couple and direction angle

  • Bradracer18
  • · Replies 3 ·
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3

Transfer of charges between 2 conductors

  • pizzadude
  • · Replies 3 ·
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3

Measuring g in the Indian Ocean with a Submarine Pendulum

  • bebop721
  • · Replies 11 ·
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11

What Forces Act on the Hinge When the Lift Cable Breaks?

  • integra2k20
  • · Replies 1 ·
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1

Explaining the Hydrostatic Pressure Paradox: What's Wrong with the Flask?

  • dobry_den
  • · Replies 2 ·
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2

Apply the concept of relative velocity

  • winnie3
  • · Replies 1 ·
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1

Work and heat along different thermodynamic paths between states

  • mbrmbrg
  • · Replies 1 ·
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1

Can Multiple Waves Interfere in a Single Medium?

  • mad_max
  • · Replies 1 ·
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1

Determine a formula for the acceleration of each block

  • endeavor
  • · Replies 3 ·
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3

Action-Reaction Forces (Simple Problems)

  • rwishka
  • · Replies 6 ·
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6

Moment about the x-axis using cross product

  • suspenc3
  • · Replies 1 ·
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1

Force and Acceleration (2 Simple Prob.)

  • rwishka
  • · Replies 9 ·
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9

Finding moments about a point in static equilibrium

  • suspenc3
  • · Replies 3 ·
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3

Questions on Fluids, Gravity, Inertia, and Friction

  • ritwik06
  • · Replies 8 ·
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8

How Long to Reach The Highest Point?

  • dkgojackets
  • · Replies 7 ·
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7

What Does an 8% Grade Mean in Terms of Slope Steepness?

  • Gott_ist_tot
  • · Replies 1 ·
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1

Hollow Cavity within a charged sphere

  • Lancen
  • · Replies 1 ·
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1

Forces and Angles Above The Horizontal (2 prob.)

  • rwishka
  • · Replies 2 ·
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2
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1
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1

Understanding Capacitor Charge Distribution in a Circuit

  • jinyong
  • · Replies 2 ·
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2
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2

How Is the Initial Momentum of a 2kg Block Determined After Explosion?

  • kaitamasaki
  • · Replies 1 ·
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1

Electrical= Resistance and Energy

  • Forceflow
  • · Replies 4 ·
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4

Voltage potential due to 2 charges

  • bobby3280
  • · Replies 2 ·
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2

Period of a monocromatic light?

  • riddlingminion
  • · Replies 2 ·
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2

Perpendicular Forces, Acceleration and Mass Problem

  • rwishka
  • · Replies 6 ·
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6

What is the mass of the cylinder?

  • magnummd
  • · Replies 11 ·
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11

Intro Thermodynamics-put ice in water

  • mbrmbrg
  • · Replies 3 ·
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3

Basketball shot from 8 m at 30° to make the basket at 3.05 m

  • tnhoots
  • · Replies 7 ·
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7

Can Strong Winds Cause High Building Windows to Open Outward?

  • Gyroscope
  • · Replies 9 ·
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9

Why doesn't water in a test tube respond to an electromagnetic field?

  • walela1
  • · Replies 1 ·
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1

What is the magnitude and direction of vector C?

  • rasikan
  • · Replies 15 ·
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15

Calculating Angles Using Trigonometric Functions

  • rasikan
  • · Replies 2 ·
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2

How do I draw force vectors from F1 cos x and F2 cos 2x components?

  • rasikan
  • · Replies 4 ·
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4

How to Solve Projectile Motion Problems: Finding Distance to Target

  • rasikan
  • · Replies 2 ·
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2
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5

Sled sliding on snow with friction stops after how far

  • saralsaigh
  • · Replies 3 ·
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3

Solving Physics Homework: Car Dropped from 32.8m Cliff

  • saralsaigh
  • · Replies 11 ·
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11

Finding the Emf and Internal Resistance of a Battery with Changing Resistors

  • DoubleHelix
  • · Replies 2 ·
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2

Basic Electricity Question - Potential Electric

  • cheechnchong
  • · Replies 6 ·
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6

How Far Will the Spring Compress When the Gas Temperature Rises to 100°C?

  • mustang06
  • · Replies 4 ·
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4
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5
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3

Solve Pulley Problems: Friction & Inertia | Physics Help

  • blackice552
  • · Replies 1 ·
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1

Einstein views on gravitation,help

  • shehri
  • · Replies 3 ·
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3

Velocity of Pole Vaulter: Solving for 10.95 m/s

  • whiteruskii
  • · Replies 5 ·
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5
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4