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

Calculating Mass of Bucket to Descend 9.144m in 4s

  • UrbanXrisis
  • · Replies 3 ·
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3

Confused (simple harmonic motion problem)

  • SnowOwl18
  • · Replies 4 ·
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4

Thinking skills assessment test

  • ponjavic
  • · Replies 3 ·
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3

What does the graph look like if a = 0?

  • dg_5021
  • · Replies 3 ·
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3

Calculating Rotational Motion: Solving for Time in Uniform Door Rotation

  • pinky2468
  • · Replies 8 ·
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8

Mastering Complex Integrals for Beginners

  • realler
  • · Replies 2 ·
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2

Solve Turntable Problem: Find Coefficient of Friction

  • mattx118
  • · Replies 10 ·
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10

Do Forces, Impulse, and Momentum Change Equally in a Collision?

  • mattfelner
  • · Replies 2 ·
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2

Calculating Acceleration Due to Gravity on the Moon and Mars

  • cougar_21
  • · Replies 6 ·
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6

What Is the Angle Between a Tilted Bar and a Level Surface?

  • dg_5021
  • · Replies 2 ·
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2

How does a brief summary look like?

  • ernesto
  • · Replies 2 ·
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2

Minimizing Radiation Decay for Tumors Treatment

  • INtj
  • · Replies 7 ·
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7

Where Does Energy Go When Water Boils?

  • imboring2000
  • · Replies 2 ·
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2

Book Report Help - Get Real Ideas Now

  • ernesto
  • · Replies 4 ·
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4

Calculating Energy Transformed by Friction in a Falling Satellite

  • hauthuong
  • · Replies 3 ·
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3

Is the Integral of e^(-x^2) the Coolest Sum Ever?

  • pseudonewtonian
  • · Replies 2 ·
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2

How Does Charge Distribution Affect Electric Potential at a Point?

  • stunner5000pt
  • · Replies 1 ·
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1

Pulling Tablecloth Under Steel Ball, Finding Speed

  • GingerBread27
  • · Replies 2 ·
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2

Volume of region between two functions?

  • Khan86
  • · Replies 4 ·
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4

Why Is Coaxial Cable Characterized by Conductance per Unit Length?

  • philipc
  • · Replies 2 ·
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2

Calculating Delta T for a Resistor - Philip's Guide

  • philipc
  • · Replies 2 ·
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2

Please HELP - Enthelpy Change of Neutralization Reaction

  • borderline182
  • · Replies 1 ·
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1

What Does x=--x Mean in Mathematics?

  • sinas
  • · Replies 2 ·
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2

Coin Rolling Up Incline, no mass given?

  • splinter
  • · Replies 4 ·
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4

Elastic Collision and Simultaneous Equations

  • dbusack1013
  • · Replies 3 ·
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3

Proving the Limit of n! / n^n = 0 to Using Sequence Definition

  • courtrigrad
  • · Replies 7 ·
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7

How Is Force Calculated to Pitch a Baseball at 100 mph?

  • DB
  • · Replies 9 ·
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9
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16

How Do You Compute the Derivative of an Integral with Variable Limits?

  • buffgilville
  • · Replies 2 ·
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2

New preesure when 2 containers are connected

  • darkar
  • · Replies 2 ·
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2

What is the speed of the bullet after it is fired into a wood block?

  • FancyNut
  • · Replies 10 ·
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10

How Do I Solve for Terminal Velocity Using Logs in My Air Resistance Lab?

  • Mr. Hiyasaki
  • · Replies 2 ·
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2

Help with simple work / nrg conservation question

  • Mr. Hiyasaki
  • · Replies 2 ·
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2

How Do I Calculate Position and Velocity in a Particle Movement Problem?

  • ziddy83
  • · Replies 2 ·
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2

Help with rotation of rigid bodies

  • RussG
  • · Replies 2 ·
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2

How Can You Measure the Charge of a Molecule?

  • chusifer
  • · Replies 2 ·
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2

Capacitor (the dissipation of electrical energy)

  • jazzylady03
  • · Replies 2 ·
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2

Momentum and Vectors: Solving a Car Collision Problem

  • HeRo
  • · Replies 2 ·
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2

Calculating Total Energy in a Pulley System: Kinetic vs. Potential Energy

  • RobtheSlob
  • · Replies 3 ·
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3

Max Total Yield: Plant 37-38 Apple Trees

  • preet
  • · Replies 1 ·
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1

How Do Total and Partial Derivatives Differ in Multivariable Calculus?

  • Hypnotoad
  • · Replies 2 ·
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2

How Do I Solve for Zero Velocity Using the Bernoulli Equation?

  • CollectiveRocker
  • · Replies 2 ·
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2

Solving an Isotropic Harmonic Oscillator with Four Identical Springs

  • matpo39
  • · Replies 2 ·
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2

How Does a Spring's Vibration Change Over Time?

  • physicsss
  • · Replies 9 ·
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9

Simple Harmonic Motion of a spring and hammer

  • SnowOwl18
  • · Replies 2 ·
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2

Solving Force/Ramp Problem: Find Tension & Acceleration

  • mrjeffy321
  • · Replies 8 ·
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8

Calculating Speed in Inelastic Collisions

  • grahammm
  • · Replies 9 ·
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9

Finding a start to simple preamp circuit (1 opamp)

  • ski
  • · Replies 2 ·
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2

How do vectors relate to perpendicularity in circular motion?

  • LondonLady
  • · Replies 4 ·
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4
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2

Electricity generated by conductor

  • Brainy_Mike
  • · Replies 2 ·
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2

The Ground State Orbit of a W+73 Atom: Is It Bohr-rific?

  • stunner5000pt
  • · Replies 2 ·
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2

Solving Diff. Equations: x(t) and y(t)

  • circa415
  • · Replies 2 ·
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2

Efficiently Manufacture 3.0kg of Ice Cubes: Calculating Minimum Work

  • CartoonKid
  • · Replies 2 ·
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2

Solving a Forces Problem: Need Help!

  • DethRose
  • · Replies 2 ·
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2

Quantum mechanics in DIRAC notation

  • JamesJames
  • · Replies 9 ·
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9

Question about the Null Space for this Zero Matrix

  • Theelectricchild
  • · Replies 5 ·
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5

Calculating Forces and Weight of a Mass on a Plank

  • cosmokramer
  • · Replies 2 ·
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2

Need Help Gravitational Problem

  • Dragoon
  • · Replies 6 ·
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6

How much water can a ship deliver to a desert island in the Caribbean?

  • physicsss
  • · Replies 5 ·
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5
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4

Solve Calculus Problem f(x)=(ax+b)/(x-c)

  • needhelpperson
  • · Replies 2 ·
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2

Explain Tunneling Paradox: Quantum Particle & V_0 Barrier

  • student1938
  • · Replies 10 ·
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10

How do you find the second derivative using implicit differentiation?

  • courtrigrad
  • · Replies 6 ·
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6

Calculating Time of Collision for Dropped Stone and Thrown Ball

  • clh7871
  • · Replies 3 ·
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3

What is its acceleration down the plane?

  • clh7871
  • · Replies 2 ·
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2
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7

How Does Momentum Affect a Moving Toy Truck When a Brick is Dropped on It?"

  • puregoodboi
  • · Replies 3 ·
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3

Calculating Masses from Disc Explosion Velocities

  • puregoodboi
  • · Replies 3 ·
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3

Understanding Wheatstone Bridge Circuit: How to Solve for Unknown Voltages

  • needhelpperson
  • · Replies 3 ·
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3

Still stuck on two blocks and pulleys

  • tigerseye
  • · Replies 5 ·
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5

Can Physics Newcomers Tackle Momentum and Velocity Questions?

  • phyzacs
  • · Replies 9 ·
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9

Converting a Shifted Circle into Polar Coordinates

  • Tarhead
  • · Replies 3 ·
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3

Calculating Net Torque on Counterweight System

  • Antepolleo
  • · Replies 18 ·
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18

Spring Motion (1st Semester Physics)

  • glascupio
  • · Replies 2 ·
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2

Is the Balanced Equation for the Reaction Between Mg and HCl MgCl + H?

  • dg_5021
  • · Replies 2 ·
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2

How Is the Average Force Calculated in a Collision Problem?

  • ballahboy
  • · Replies 2 ·
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2

Assignment due in less than 1 hr

  • disruptors
  • · Replies 6 ·
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6

Converting a Linear Equation to Polar Form: Dealing with Constant Terms

  • iggybaseball
  • · Replies 2 ·
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2

Minimum Speed for Hoop to Roll Without Slipping Around a Loop

  • physicsss
  • · Replies 2 ·
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2

Simulating charge deflection in magnetic field

  • brian0918
  • · Replies 9 ·
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9

Recursion Formula: Solve Series with Ease

  • Poweranimals
  • · Replies 2 ·
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2

Centripetal Force: Poll, Rope, Cart & 80kg Person

  • UrbanXrisis
  • · Replies 8 ·
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8

Why Do Cats Chase Each Other in a Square Room?

  • boob
  • · Replies 9 ·
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9

How Is Volume Calculated Using Cylindrical Shells?

  • Bri
  • · Replies 2 ·
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2

Calculate Centripetal Force for Object on Turntable

  • Flinthill84
  • · Replies 2 ·
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2

Rocket Q: Solving 2-Part Launch Problem w/ 900kg Rocket

  • Naeem
  • · Replies 2 ·
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2

Understanding the Mass and Density of Empty Aluminum Cans

  • Bcisewski
  • · Replies 2 ·
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2

Minimizing Area: Proof that k is Independent of f(x) in a Tangent Problem

  • elsen_678
  • · Replies 2 ·
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2

Solve Work Energy Problem: Find Theta for Skier on Slope

  • Nothing
  • · Replies 2 ·
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2

Force on door from two hinges - easy - help anyone?

  • vtech
  • · Replies 4 ·
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4

Estimate Sun's Rotation Period as a Neutron Star

  • wildrjetta
  • · Replies 5 ·
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5
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7

Convenient Coordinate System for Dog, Acrobat, and Submarine Analysis

  • BronBurs
  • · Replies 2 ·
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2

Derivative of y = x (1 - x^2)^1/2, is this correct?

  • Leonidas
  • · Replies 2 ·
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2

How Far Does the Block Travel After Being Struck by the Bullet?

  • pkhor
  • · Replies 2 ·
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2

This time its a statics problem

  • Cyrad2
  • · Replies 2 ·
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2

Solving Collision Problem: Find Angle Between Initial Velocities

  • jenavira
  • · Replies 2 ·
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2
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2

Electric potential in a uniform electric field

  • agirlsrepublic
  • · Replies 2 ·
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2