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 K(sp) & Equilibrium Constants: A(g) --> 2B(g) + C(g)

  • ChemRookie
  • · Replies 2 ·
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2

How to Solve Physics Problems Involving Collisions and Inclines?

  • cde42003
  • · Replies 2 ·
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2

How Does Wave Frequency Affect Speed in the Same Medium?

  • chibi_lenne
  • · Replies 3 ·
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3

How Does Ultraviolet Spectroscopy Enhance Molecular Analysis?

  • Ruth
  • · Replies 2 ·
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2

Time of boat completing round trip

  • Kamataat
  • · Replies 9 ·
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9

Conservation of momentum and energy

  • krypto
  • · Replies 2 ·
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2

Limit of 1/x + 1/x^2 when x -> 3 from the left

  • gillgill
  • · Replies 3 ·
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3

What is the Solution to the Equation with 8 and 1?

  • espania
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2
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2

Red light to green light homework

  • espania
  • · Replies 12 ·
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12

Differential equation for a electric circuit

  • bulbanos
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2
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7

Angle of Turn from Kampala to Singapore: Solving with Law of Cosines

  • mugzieee
  • · Replies 5 ·
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5

Thermistors - Voltage across a resistor compared with temperature

  • Noj
  • · Replies 6 ·
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6

Solve Physics Problem: Acceleration of Hoop Down Ramp

  • RhysticGenesis
  • · Replies 2 ·
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2

How Does Ticker Tape Reveal Uniform Motion Characteristics?

  • Karma
  • · Replies 2 ·
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2

Solving Algebra Problem: [3+ x5/3y]/x

  • Imparcticle
  • · Replies 5 ·
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5

Why does the voltage across a wire with current in it equal zero?

  • Caboose23
  • · Replies 2 ·
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2

What is the name of the curve where its radial vector ....

  • yoyo
  • · Replies 2 ·
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2

Solving Math Mistake: What's Wrong with \frac{m}{M+m}?

  • UrbanXrisis
  • · Replies 6 ·
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6
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2

Forces of 2 dimensional motion w/friction

  • Kenny_Mack
  • · Replies 2 ·
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2
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2

Quick HELP GEOMETRIC SERIES SUM

  • aisha
  • · Replies 8 ·
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8
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2

How Does N-Slit Interference Affect Minima Spacing?

  • shaiqbashir
  • · Replies 2 ·
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2

Trouble With Trig Proofs: Seeking Help

  • seiferseph
  • · Replies 8 ·
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8

Not hard If you know how (homework) I don't

  • mushhhy
  • · Replies 4 ·
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4

Balancing Redox Equations: NO3- + Ag in Acidic Solution

  • vsage
  • · Replies 2 ·
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2

Help please, motion of charged particle in mag field

  • ballahboy
  • · Replies 4 ·
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4

Understanding Pendulum Work and Energy: A Scientist's Perspective

  • coile3
  • · Replies 6 ·
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6

Head-on Collision: Solving for Ball A & B Velocities

  • Jayhawk1
  • · Replies 5 ·
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5

Penetration of Bullet in Concrete Wall: Physicsal Analysis

  • reggie
  • · Replies 2 ·
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2

Two Discs on a Rod - Solving Normal Freqs & Modes

  • Feynmanfan
  • · Replies 3 ·
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3

Calculating Enthalpy Change for Ca and CaO Reactions

  • erik05
  • · Replies 2 ·
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2

What is the Velocity of Gliders A and B in an Inelastic Collision?

  • KU_Mustang
  • · Replies 3 ·
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3
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8

Pretty please with a cherry on top?

  • Imparcticle
  • · Replies 3 ·
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3

Pressure at center of earth (or any planet)

  • Bill Wells
  • · Replies 2 ·
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2

Ideal Gas Equation: Experimental Results & Definition

  • Steph
  • · Replies 2 ·
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2
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2

Calculate Kinetic Energy Decrease: Rotational Energy

  • UrbanXrisis
  • · Replies 2 ·
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2

Magnetic field at the center of the loop

  • Heart
  • · Replies 4 ·
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4

Calculating Electrostatic Force of 3 Point Charges

  • Soaring Crane
  • · Replies 2 ·
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2
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2

Solving an Integral Involving Conversion to Cosine

  • mugzieee
  • · Replies 13 ·
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13

Centripetal Force and proportionality

  • MathHelp
  • · Replies 2 ·
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2

Is Doppler Effect Infinite when Wave Velocity Equals Emitter Velocity?

  • Raparicio
  • · Replies 5 ·
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5

What is the pattern in this summation expression?

  • irony of truth
  • · Replies 2 ·
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2

Work out the tension in the rope

  • Gughanath
  • · Replies 3 ·
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3

Physics Coursework: Sensors, Photodiodes and Graphs

  • Padford
  • · Replies 32 ·
2
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32

Research:physics behind car crumple zones

  • Harold
  • · Replies 2 ·
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2

Solve Ampere's Law & Displacement Current: Capacitor Voltage Change

  • airkapp
  • · Replies 2 ·
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2

Solving sin3x=1/2: 6 Solutions Explained

  • seiferseph
  • · Replies 15 ·
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15
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3

Average Induced EMF in Loop of Wire Rotated in B-Field

  • airkapp
  • · Replies 2 ·
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2

Help with Maxwell’s equation in integral form

  • robert25pl
  • · Replies 10 ·
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10

How Do You Calculate the Center of Mass for a Three-Mass System?

  • gflores
  • · Replies 2 ·
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2

Prove Triangle ABC Medians X,A,Y Lie in a Straight Line - Help Tanya

  • Tanya Back
  • · Replies 2 ·
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2

Is the Energy Output from Different Alcohols Proportional to Their RMM?

  • sueanne
  • · Replies 4 ·
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4

Is the story of Noah's flood fact or fiction?

  • gabby989062
  • · Replies 44 ·
2
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44

How to Convert Units in the Equation \(\alpha = a/d\)?

  • tony873004
  • · Replies 4 ·
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4

Momentum Conservation in Elastic Collisions

  • ShazK
  • · Replies 7 ·
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7

C++ assignment involving classes

  • Math Is Hard
  • · Replies 6 ·
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6

Rotational Inertia of a hollow sphere(having trouble)

  • Vasco
  • · Replies 6 ·
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6
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3

Explaining Movement with Newton's Laws

  • DevilTemptations
  • · Replies 3 ·
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3

Collision physics homework help

  • tandoorichicken
  • · Replies 2 ·
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2

Solving Forklift Problem: Finding Stopping Distance & Tipping Point

  • nineeyes
  • · Replies 2 ·
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2

Help with Simple Pendulum Physics Homework

  • juef
  • · Replies 3 ·
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3

Equation for the tension in the string

  • Gughanath
  • · Replies 3 ·
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3
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6

Can This Logic Proof for ~(~E > A) Be Resolved?

  • NileQueen
  • · Replies 3 ·
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3

Velocity relation of a particle

  • Wiz
  • · Replies 16 ·
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16
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4
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6

A little help with calculus terms.

  • sebasalekhine7
  • · Replies 12 ·
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12

What is the Angular Speed of a Pulsar?

  • elemnt55
  • · Replies 5 ·
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5

Single Slit Diffraction Pattern

  • mohdfasieh
  • · Replies 2 ·
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2

What Is True About Sinusoidal Electromagnetic Waves?

  • Annie1011
  • · Replies 3 ·
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3

How does potential energy affect the motion of a particle?

  • Azytzeen
  • · Replies 3 ·
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3

Energy Required to Lift a Heavy Box

  • ProBasket
  • · Replies 4 ·
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4

Calculating Absolute Potential at the Center of a Square with +Q Charges

  • Soaring Crane
  • · Replies 2 ·
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2

Need working checked for limits question

  • shan
  • · Replies 8 ·
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8

The Acceleration of a Block on an Incline Plane: Formula and Minimum Ratio

  • tony873004
  • · Replies 6 ·
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6

Solving for Translational Speed of a Bowling Ball on a Vertical Rise

  • kpangrace
  • · Replies 3 ·
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3
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6
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2

Simple De Broglie Wavelength Problem

  • vsage
  • · Replies 2 ·
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2
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2

How Does the Wrecking Ball's Weight Affect the Boom's Stability?

  • smith5029
  • · Replies 3 ·
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3

Calculate Net Work on 391kg Piano Sliding 3.7m Down 27° Incline

  • Fanman22
  • · Replies 3 ·
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3

Calculating Forces in a Rotational System with a Wrecking Ball and Boom

  • smith5029
  • · Replies 2 ·
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2

Can someone help me find the equivalent resistance

  • Gonger
  • · Replies 3 ·
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3

FBD Clarification: Elevator Acceleration and Forces

  • SwAnK
  • · Replies 3 ·
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3

Solve Relative Motion: Boat, Wood + River Flow

  • Kamataat
  • · Replies 2 ·
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2

Finding the determinent or the identity of the matrix?

  • carltonblues
  • · Replies 7 ·
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7

Checking My Work: Solving for Applied Force in Friction Problem

  • mohlam12
  • · Replies 2 ·
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2

What is the relationship between voltage and resistance in parallel circuits?

  • Hologramdr
  • · Replies 3 ·
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3

An object and two lenses - Is this right?

  • stunner5000pt
  • · Replies 2 ·
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2