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

  • Poll Poll

Tricky Path Difference Problem in waves, help (attachment)

  • ihatephysics0
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4

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

  • kamosblue
  • · Replies 2 ·
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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
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2

Calculating Potential Energy Stored in Springs

  • vysero
  • · Replies 3 ·
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3

Solving a Complex Homework Problem: Tip or Slide?

  • beijati
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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
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5
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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

Optics, Minimizing Reflection with Refraction Index Numbers HELP?

  • bmb2009
  • · Replies 1 ·
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1

Fluids - maximum error - diameters

  • bcalkins
  • · Replies 5 ·
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5

Solving a Homework Assignment: Airplane Flight in a Windy Day

  • 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
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1
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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

Bernolli's Equation: vb^2-va^2 = ?

  • bcalkins
  • · Replies 6 ·
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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

Magnetic force created by one wire over another

  • Parad0x88
  • · Replies 4 ·
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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

Vector Question: Swimmer Across River Diagram Help

  • 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

Kleppner & Kolenkow find the tension of a rotating loop of string

  • AlwaysCurious
  • · Replies 2 ·
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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

Vector Addition Help: Solving P = M + N

  • 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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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

Need help with Gravitational Field Strength question

  • 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 velocity, can someone help?

  • 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

Force on Rocket: Find Force & Time to Zero

  • 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

How Much Work is Needed to Push a Car Up an Incline?

  • Interception
  • · Replies 1 ·
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1

Work and kinetic theorem problem using friction

  • Qedpower
  • · Replies 8 ·
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8

Electrostatics (Gauss’s law for sphere)

  • roam
  • · Replies 3 ·
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3