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

String through hole - central forces

  • Keano16
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2

What is the drum's angular acceleration?

  • Reshma
  • · Replies 4 ·
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4

Charges placed at corners of a square

  • krtica
  • · Replies 4 ·
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4

Electricity - Series and Parallel Circuit

  • priscilla98
  • · Replies 3 ·
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3

Max Range of a Cannon with Muzzle Speed 322 m/s

  • huybinhs
  • · Replies 11 ·
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11

The effect of a dielectric on energy storage of a capacitor

  • Zift
  • · Replies 1 ·
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1

Calculating Displacement & Airspeed with Wind Speed

  • barthayn
  • · Replies 1 ·
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1

RC Circuit find capacitor charge

  • matt72lsu
  • · Replies 10 ·
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10

SAVE ME HW DUE AT MIDNITE Optics/Glasses problems

  • Zywo
  • · Replies 1 ·
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1

Laws of Motion with Static Equilibrium

  • Keithkent09
  • · Replies 3 ·
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3

EMF/internal resistance question

  • PennyGirl
  • · Replies 8 ·
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8

Solving for Magnification in a Microscope

  • Linus Pauling
  • · Replies 2 ·
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2

Period equation, T=I/f, what does I mean

  • rdcrdc11
  • · Replies 3 ·
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3

A person standing on a ladder : Static Equilibrium

  • Chandasouk
  • · Replies 2 ·
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2

Relative velocity of a plane problem

  • zero_infinity
  • · Replies 5 ·
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5

Equal Kinetic Energy for Different Masses?

  • kylepetten
  • · Replies 2 ·
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2

Metric Conversion Homework Help: Stumped by Division

  • leroyjenkens
  • · Replies 5 ·
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5

Finding the Optimal Angle for a Baseball to Return to its Release Point

  • Larrytsai
  • · Replies 6 ·
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6

How Is Electric Potential Calculated for a Charged Wire Bent into a Circle?

  • Arshad_Physic
  • · Replies 1 ·
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1

Static Equilibrium Problem: A diving board

  • Chandasouk
  • · Replies 4 ·
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4

Speed of moving mass as it loses mass

  • lei123
  • · Replies 2 ·
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2

Maximum height and length on an incline.

  • center o bass
  • · Replies 8 ·
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8

Can some help me find the elctrostatic force exerted in this problem please?

  • SwizzBeatz203
  • · Replies 1 ·
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1

Electric Field at Ro, Phi, and Z Help

  • akhdz
  • · Replies 1 ·
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1

Gauss Law Problem to determine F/A

  • max190us
  • · Replies 1 ·
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1

How Do You Calculate Displacement in Physics Problems?

  • CanadianChick
  • · Replies 4 ·
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4

The object at rest has an initial velocity >0?

  • Who,me?
  • · Replies 2 ·
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2

Gravitational Potential Energy of a box

  • kylepetten
  • · Replies 2 ·
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2

Calculating Resultant Force on a Charge in a Triangle Configuration

  • kontejnjer
  • · Replies 2 ·
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2

Position Varying Electric Potential

  • Refrost
  • · Replies 2 ·
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2

A few questions about Direct and Shear stress

  • hunterage2000
  • · Replies 4 ·
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4

Resistance Between Terminals AC and AD

  • shimizua
  • · Replies 1 ·
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1

Simple Harmonic Motion of a sewing machine

  • rspbrrylmnd
  • · Replies 5 ·
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5

Calculating density using temp. and salinity?

  • thethedev
  • · Replies 1 ·
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1

Basic high school algebra, with physics

  • forrealfyziks
  • · Replies 1 ·
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1

How Is Contact Force Calculated in Physics Problems?

  • jand
  • · Replies 4 ·
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4

Understanding E(t) = wNBAsin(wt) and Its Variables

  • lampshader
  • · Replies 5 ·
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5

Flux from a given charge distribution

  • ryukyu
  • · Replies 6 ·
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6

How can I use log form to find the constant k in a given equation?

  • phzxc
  • · Replies 4 ·
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4

Finding the mass of a beam by static equilibrium

  • yssida
  • · Replies 3 ·
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3

Solving Current Divider: Find i1 and i2

  • -EquinoX-
  • · Replies 4 ·
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4

Electric Field inside a cylinder

  • orb123
  • · Replies 10 ·
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10

Magnetic field strength between two wires

  • victoriafello
  • · Replies 3 ·
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3

Solve Electric Field: Find q Given E, k, and r

  • matt.
  • · Replies 3 ·
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3

Finding h in the Fluid Dynamics Lab

  • belinda
  • · Replies 1 ·
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1

Physics Concepts Force and Work Help

  • x0ji11y
  • · Replies 5 ·
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5

Why is linear momentum not conserved when a person jumps onto a carousel?

  • pc2-brazil
  • · Replies 8 ·
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8

Magnitude and direction of its velocity problem

  • Quezar
  • · Replies 1 ·
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1

How Do Pulses Travel in Strings of Different Densities?

  • paulsberardi
  • · Replies 1 ·
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1

How Should Voltmeters and Ammeters Be Connected in a Circuit?

  • mike88si
  • · Replies 1 ·
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1

Calculating Sound Energy & Intensity: A Scientist's Approach

  • dnl65078
  • · Replies 1 ·
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1

Newton's second law to find mass

  • songoku
  • · Replies 4 ·
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4

What is the phase of the resultant wave when x = t = 0?

  • wrongusername
  • · Replies 13 ·
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13

Work done by external forces on an equipotential surface.

  • nwyatt
  • · Replies 4 ·
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4

Forces problemfind effective weight of mass (3 masses)

  • needhelp12345
  • · Replies 2 ·
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2

A block of mass going down an incline plane with friction

  • chiCEstudent
  • · Replies 4 ·
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4

How to Calculate Thrust for an Airplane Takeoff?

  • erok81
  • · Replies 4 ·
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4

Masses on Pullies, equal weights on both sides but still rotating

  • Oijl
  • · Replies 1 ·
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1

What is the Process for Determining Hydrostatic Forces in a Swimming Pool?

  • MisterOL
  • · Replies 2 ·
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2

Electric Potential Homework: Find Q (microC) from 0.4J KE at x=0.5m

  • melst
  • · Replies 3 ·
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3

Solving Resultant Force: F1+F2+F3 in Standard Polar Form

  • keith421
  • · Replies 6 ·
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6

How much tension should the rope be able to withstand?

  • Ryuk1990
  • · Replies 8 ·
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8

Tension in string between 5.4 kg and 6.2 kg masses on pulley

  • mybrohshi5
  • · Replies 12 ·
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12

What is mu_min given radius 54m?

  • 1man
  • · Replies 2 ·
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2

Rearranging an Energy Decay Equation

  • einsteinette
  • · Replies 1 ·
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1

How Do You Solve Capacitance and Voltage in This Capacitor Network?

  • traceurnin
  • · Replies 3 ·
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3

How Do I Solve These Basic Physics and Geometry Questions?

  • AGJr23
  • · Replies 1 ·
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1

Calculating Force and Distance in a Hydraulic Lift System

  • blackdog666
  • · Replies 1 ·
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1

Drawing Field Lines: A Beginner's Guide

  • veronicak5678
  • · Replies 1 ·
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1

Cross product and dot product of forces expressed as complex numbers

  • magwas
  • · Replies 4 ·
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4

Help with Simple Force Problems

  • SoulInNeed
  • · Replies 7 ·
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7
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1

Finding Friction Coefficient of Masses GA and GB

  • MisterOL
  • · Replies 7 ·
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7

What is the Tension in the String Connecting Two Blocks?

  • caela
  • · Replies 1 ·
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1

Why do capacitors 'in series' each carry the same charge?

  • jrdelacruz
  • · Replies 6 ·
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6

Solving Coupled Pendula Differential Equations

  • bon
  • · Replies 22 ·
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22

Poynting vector over a cylinder

  • fluidistic
  • · Replies 5 ·
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5

Solve 2D Motion Issues: Initial Speed for Object Leaving Origin

  • patterson
  • · Replies 8 ·
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8

Battery connected to capacitors in series

  • matt72lsu
  • · Replies 4 ·
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4

Pendulums & simple harmonic motion.

  • Yehia11
  • · Replies 14 ·
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14

To find the length of a pendulum in Simple Harmonic motion

  • Yehia11
  • · Replies 7 ·
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7

Double Slit Question: Find Angular Separation for m=2, 412 nm, 349 l/mm

  • metalmagik
  • · Replies 3 ·
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3

Rolling without slipping on a cylindrical surface - need clarification

  • klg.amit
  • · Replies 4 ·
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4

Work Done by Displacing a Dielectric Material in a Capacitor

  • fluidistic
  • · Replies 10 ·
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10

What is the Speed of Ship A as Observed from Ship B?

  • Oijl
  • · Replies 1 ·
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1

Checking 2B=Ф/A - Is It Correct?

  • Kev1n
  • · Replies 1 ·
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1

Putting a satellite into an elliptical orbit

  • Keano16
  • · Replies 1 ·
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1

How Does Relativity Affect Perceptions of Time and Length in Motion?

  • Oijl
  • · Replies 1 ·
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1

Minimum Velocity needed to clear a hemisphere

  • simpleton
  • · Replies 3 ·
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3

What is the Solution to an Inclined Plane with Pulley Problem?

  • wy125
  • · Replies 7 ·
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7

How Do You Calculate Average Speed with Variable Speeds and Distances?

  • cstvlr
  • · Replies 2 ·
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2

What mistake did the author make in their Atwood machine problem?

  • coppersauce
  • · Replies 1 ·
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1

How Does Charge Distribution Affect Electrostatic Energy and Potential?

  • gwenle1
  • · Replies 3 ·
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3

Kinematics - Car accelerating from traffic light

  • xupe33jrm
  • · Replies 6 ·
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6

Does Length Affect Stress Calculation in Material Science?

  • twostep08
  • · Replies 1 ·
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1

Which student is correct when bulb C is removed?

  • EV33
  • · Replies 2 ·
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2

Projectile motion off a cliff at an angle (help )

  • Wraith09
  • · Replies 2 ·
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2

Finding the Required Force for a Block on a Wedge

  • coppersauce
  • · Replies 5 ·
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5
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5

Is it possible for a given lens to act as converging lens

  • olyviab
  • · Replies 3 ·
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3