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

Using integration to find depth

  • jackscholar
  • · Replies 6 ·
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6
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2

Focal Length of a Half Ball Lens

  • HIB
  • · Replies 4 ·
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4
  • Poll Poll

Path difference problem in wave interference

  • ihatephysics0
  • · Replies 4 ·
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4

You are hired as a physicist in a team of Formula 1.

  • kamosblue
  • · Replies 2 ·
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2

Moment of inertia of disk, the easy way out?

  • phenalor
  • · Replies 9 ·
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9

Speed/velocity of particles inside a centrifuge

  • CoolGod
  • · Replies 2 ·
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2

Kinetic and Static Friction Problems

  • turtle4yj
  • · Replies 3 ·
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3

How Do You Calculate the Tension in Wires Holding a Street Light?

  • turtle4yj
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2

Kinetic Energy Ratio of an Eccentric Disk

  • mc120
  • · Replies 3 ·
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3

Spring, Block, KE, PE, Incline Problem: Why is KE=ZERO?

  • ladyrx2020
  • · Replies 2 ·
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2

Calculating Potential Energy Stored in Springs

  • vysero
  • · Replies 3 ·
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3

Force needed to tip a storage bin at 20 degrees

  • beijati
  • · Replies 1 ·
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1

How Does Adiabatic Expansion Affect an Ideal Gas in a Closed Cycle?

  • member 392791
  • · Replies 3 ·
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3

Rigid body rotation near galactic center

  • clandarkfire
  • · Replies 3 ·
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3

Speed of an arrow when given force, weight, distance

  • joe426
  • · Replies 2 ·
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2

# of atoms when combining elements

  • Feodalherren
  • · Replies 5 ·
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5
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1

Calculating Vac in a Half Wave Rectifier Circuit with Capacitor

  • kstopp
  • · Replies 1 ·
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1

Finding the area of a pipe, rate of flow

  • bnosam
  • · Replies 3 ·
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3

Minimum thickness of anti-reflection coating for 401 nm light

  • bmb2009
  • · Replies 1 ·
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1

Fluids - maximum error - diameters

  • bcalkins
  • · Replies 5 ·
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5

Airplane heading with wind using vector components

  • wuki1
  • · Replies 5 ·
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5

Solving an RC Circuit Using Differential Equations

  • theBEAST
  • · Replies 4 ·
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4

Do Objects Accelerate Independently and What Defines a Kinetic Force?

  • darkmatter820
  • · Replies 1 ·
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1
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1

Finding average acceleration with two sets of velocity vecotors

  • mm13690
  • · Replies 3 ·
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3
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1

Hard molar specific heat question?

  • fantexihong
  • · Replies 4 ·
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4

Circular Motion (high school level)

  • SigFig
  • · Replies 1 ·
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1

Difference between induced emf and counter emf

  • aruwin
  • · Replies 1 ·
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1

Forming an Image Behind a Convex Mirror

  • PeachBanana
  • · Replies 5 ·
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5

Calculating R_L(max) and R_L(min) Using Significant Figures

  • aruwin
  • · Replies 13 ·
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13

Work Energy Theorem of a spring

  • theBEAST
  • · Replies 3 ·
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3

Projectiles why the person multiplied the column vector OB by h?

  • phospho
  • · Replies 3 ·
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3
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6

Systematic vs Random Errors or Quality of Data

  • Cruxxfay
  • · Replies 1 ·
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1

Maximum current a superconductor can carry

  • Parad0x88
  • · Replies 2 ·
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2

Continuity Equation: Relationship between vA and vB in terms of d and D

  • bcalkins
  • · Replies 1 ·
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1

Effect of Blade Angle on Power Output of wind turbine

  • memoguy
  • · Replies 3 ·
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3

Optics, the resulting power of the lens .?

  • mero coactail
  • · Replies 1 ·
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1
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4

Electron through electric and magnetic field

  • Alb
  • · Replies 1 ·
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1

Capacitors, Inductors ( finding current and resistance)

  • Arty7
  • · Replies 1 ·
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1

Swimmer crossing a river at 7 km/h current

  • Apollonian
  • · Replies 2 ·
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2

Optics,how many images will the object form?

  • mero coactail
  • · Replies 2 ·
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2

How this unit comes like that ?

  • manal950
  • · Replies 6 ·
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6

What is the tension in the wire?

  • Psyguy22
  • · Replies 12 ·
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12

Tension in a rotating loop of string

  • AlwaysCurious
  • · Replies 2 ·
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2

What Are the Correct Speeds and Masses in These Momentum Problems?

  • catala
  • · Replies 2 ·
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2

Angular impulse of rolling ball

  • serverxeon
  • · Replies 4 ·
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4

Calculating Pressure for a Hydraulic Car Lift

  • Douna2nd
  • · Replies 5 ·
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5

Time it takes a pendulum to reach a point

  • DRC12
  • · Replies 13 ·
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13

How do Amperian Loops work with two infinite slabs of current?

  • hotcommodity
  • · Replies 4 ·
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4

Two-Dimensional Elastic Collision

  • johnhuntsman
  • · Replies 4 ·
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4

Dynamo Set Up and Rotation Direction's Effect on Self-Excited DC Generator

  • NullSpace0
  • · Replies 1 ·
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1

Thickness of steel required for a vacuum chamber

  • Upsilon
  • · Replies 1 ·
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1

Finding angular velocity using work energy theorem

  • theBEAST
  • · Replies 5 ·
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5

Solving for tesnion and acceleration

  • wesleyneary
  • · Replies 1 ·
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1

What are the two equations for Centripetal Force

  • Interception
  • · Replies 1 ·
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1

Adding two momentum vectors with different angles

  • Lolagoeslala
  • · Replies 10 ·
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10

One kg of air is heated in a closed rigid vessel

  • manal950
  • · Replies 4 ·
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4

Minimum distance between skew vectors

  • peripatein
  • · Replies 1 ·
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1

Do All Metals React to Magnets Equally?

  • Northbysouth
  • · Replies 2 ·
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2

Find the locus of a pt in polar form

  • VHAHAHA
  • · Replies 6 ·
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6

Question involving work and springs

  • mldavis086
  • · Replies 1 ·
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1

Finding the area under a curve

  • Luke77
  • · Replies 1 ·
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1

Energy Density Units Electromagnetic Waves

  • PeachBanana
  • · Replies 2 ·
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2

Gravitational field strength at distance 3RE above Earth

  • ultimatesoulx
  • · Replies 3 ·
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3

Collision in frictionless surface

  • Smileyxx
  • · Replies 4 ·
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4

KVL question for multiple loops

  • Tsandman
  • · Replies 1 ·
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1

How to calculate total momentum before and after an equation?

  • seallen
  • · Replies 2 ·
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2

Simulating earth rotation and (excess) Lenght of Day calculation

  • MountFX
  • · Replies 1 ·
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1

Angular acceleration of a centrifuge spinning down from 2000 rpm

  • knowledgerich
  • · Replies 4 ·
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4

Transistor acting as a switch in closed circuit (with a thermistor)

  • DJ-Smiles
  • · Replies 3 ·
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3

Rocket thrust force and burnout time with given fuel rate

  • songoku
  • · Replies 4 ·
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4

LAB: Ballistic Pendulum + Conservation of Momentum

  • Ariel P
  • · Replies 3 ·
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3

Finding the Norton Equivalent Circuit in a Short Circuited Circuit

  • chessmath
  • · Replies 1 ·
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1

Railroad car with dropping and leaking grain covering 500m

  • daivinhtran
  • · Replies 4 ·
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4

Finding Launch Velocity given time

  • Jobeanie
  • · Replies 2 ·
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2

Two objects with springs collide

  • sarmstrong
  • · Replies 2 ·
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2

Proving the Angle Relationship in Complex Vector Multiplication

  • nucleawasta
  • · Replies 5 ·
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5

Does the wave equation have unique solutions?

  • aaaa202
  • · Replies 13 ·
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13

Uniform accelerated motion question

  • Nimrod 7
  • · Replies 11 ·
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11

Two hydraulic press joined by a lever

  • Douna2nd
  • · Replies 1 ·
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1

Calculating the force of a kick

  • Oral B
  • · Replies 5 ·
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5

Angular velocity of object after being subjected to torque

  • serverxeon
  • · Replies 3 ·
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3

What Are the Key Forces Acting on a Cylinder on an Inclined Plane?

  • diorific
  • · Replies 2 ·
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2
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4

Finding magnetic field from two crossing wires

  • Parad0x88
  • · Replies 27 ·
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27
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8

Calculate the age of the sample.

  • IAMJUSTELLIOT
  • · Replies 9 ·
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9

Solving for a force eliminating acceleration

  • cwbullivant
  • · Replies 3 ·
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3

Is velocity conserved in elastic and inelastic collisions?

  • seallen
  • · Replies 1 ·
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1

How to Solve a Spring and Pulley Problem with a 3.8-kg Sphere?

  • MG5
  • · Replies 23 ·
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23

Why Do Coupled Pendulums Exhibit Damped Oscillations?

  • Fabio010
  • · Replies 1 ·
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1

Solving Simpson's 3/8 Rule Problems with Matlab SV7

  • arizonian
  • · Replies 4 ·
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4

Finding the initial velocity of a vector

  • HelloImAsh
  • · Replies 3 ·
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3

Alpha Particle Elastic Collisions

  • Workout
  • · Replies 1 ·
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1

Dynamics And Kinematics Problem

  • Plutonium88
  • · Replies 2 ·
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2