Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Calculating the Volume of Water Displaced by a Kayak
  • psruler
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3
Input and output voltages of a transformer?
  • derfrok
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3
Discovering Your Unique Study Style: Tips and Insights
  • Ebolamonk3y
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5
Batmobile Physics Problem: Solving for Time on a Straight Street in Gotham City
  • raferalston
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2
Grade 12 Student Seeking Help on Environmental Impact of Fossil Fuel Use
  • PhYsics0860165
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2
Solving a Simple Equation for Gamma: Tips and Tricks
  • Norman
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3
Solving Trig Equations: 2cos^2(x)+cos(x)-1=0 in the Interval x≥0 and x≤2π
  • krusty the clown
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2
What is the final nucleus after a series of radioactive decays?
  • athenaroa
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3
How Does Stretching a Wire Affect Its Resistance?
  • cseet
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2
Internuclear separation between ions in a crystal-
  • Claire84
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5
Capacitor Discharge: Physical Argument in Parallel & Series Connection
  • UrbanXrisis
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2
Need help with light reflection problems
  • eku_girl83
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2
Can somene tell if I have started this right please.
  • ptex
  • · Replies 21 ·
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21
How Do You Calculate Diffraction Angles and Grating Lines?
  • mustang
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2
Angular Acceleration Calculation: Solving Problems with Formulas | Get Help Now
  • ProSk8ter474
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2
Angular Acceleration Calculation: Solving Problems with Missed Physics Notes
  • ProSk8ter474
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3
Understanding Magnetic Forces: Drawing Force F Diagrams
  • UrbanXrisis
  • · Replies 10 ·
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10
Solving Gravity Problems: Tips and Tricks for Success
  • Dingo Jellybean
  • · Replies 4 ·
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4
B field btwn two current carrying wires
  • sonya
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2
A Plane, A pulley and two boxes
  • Divergent13
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4
2002 ap physics c free response #1 question
  • dlau
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3
Solve Algebra 2 Problem 43: 7^3x/2^7x-1=(43.2)^x+2
  • mustang
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2
Trigonometric equations - strange results
  • repugno
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3
Understanding Critical Values of a Function
  • tandoorichicken
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4
Calculating Tension in a Model Plane's Horizontal Circular Motion
  • st3dent
  • · Replies 4 ·
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4
Problem23: Highest Order for 585 nm Grating w/1483 Lines/cm
  • mustang
  • · Replies 5 ·
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5
How Do You Calculate Tension in Wires Supporting a Loaded Rod?
  • jonny17
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2
How Can Rayleigh's Method Determine Beam Oscillation Frequency?
  • JamesJames
  • · Replies 2 ·
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2
Electricity Generated by Magnet Motion Over Coil
  • UrbanXrisis
  • · Replies 10 ·
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10
Linear accelerator physics problem
  • carnom
  • · Replies 4 ·
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4
Making an electromagnetic motor
  • cor_18
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2
Help with Fluid Problems: Wood + Copper & Lead
  • jamdr
  • · Replies 13 ·
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13
How Does a Magnetic Field Influence Particle Motion and Flux Calculations?
  • physadam2
  • · Replies 7 ·
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7
Conservation of Linear Momentum in an Explosion of Particles
  • Clutch306
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2
Calculating Average Value of y=x^2√x3+1 from 0 to 2
  • tandoorichicken
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2
Calculating the Impact: Measuring Dive Heights from the Pool
  • fightinag07
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4
Finding Magnification of a Gem Using a Converging Lens
  • mustang
  • · Replies 2 ·
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2
Solve Lens Problem: Focal Length & Magnification
  • mustang
  • · Replies 2 ·
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2
Proper Punctuation: Parentheses and Question Marks in English Writing
  • aychamo
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2
Understanding Waves: Period, Frequency, and Speed of a Vibrating String
  • midgey
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2
How Do I Solve a Complex Analysis of Structures Homework Problem?
  • paul11273
  • · Replies 18 ·
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18
Diffraction & Interference problems
  • mustang
  • · Replies 6 ·
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6
Help with optical instruments (the eye)
  • hibiscus23
  • · Replies 2 ·
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2
Designing an Experiment: Varying Magnet Temperature & Field Strength
  • chense
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2
Mass dropped into hole through Earth
  • MaximumTaco
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3
What symbol represents momentum: P or ρ?
  • masamune
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2
Centre of Mass & SHM: Help Understanding & Graphing
  • nic0la
  • · Replies 8 ·
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8
Structure constants of Lie groups
  • turin
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2
Impulse response? I need a bit of help with this if anyone can?
  • lizm
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2
How Do I Solve Physics Homework Problems 21, 22, 23, and 24?
  • Spectre32
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Projectile fired - find maximum height
  • kurtlau
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2
Cracking the Physics Olympiad Problem: Expressing V in 5 Parameters
  • olympiad
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Is the Book's Answer Correct for This Circuit Problem?
  • KingNothing
  • · Replies 6 ·
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6
What is the deceleration on an incline?
  • KingNothing
  • · Replies 8 ·
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8
How Is Destructive Interference Achieved with Ionospheric Reflections?
  • Xamfy19
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Having trouble with differential equations and separation of variables
  • cair0
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4
Geomagnetic field demonstration
  • GTdan
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2
Special Relativity- Muons in a Storage Ring
  • Vickitty
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2
Can You Convert an Integral Into an Infinite Series?
  • maxpowers_00
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Series and Parallel Circuit Problem
  • moonlit
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2
Help with Series and Binomial Relativity Problems
  • Elkay
  • · Replies 10 ·
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10
Designing an AM Demodulator Circuit with No ICs
  • Trancid
  • · Replies 9 ·
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9
How Does Quantum Mechanics Describe Particle Velocity?
  • curious george
  • · Replies 4 ·
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4
Mechanical energy of cannon ball
  • physics phan
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6
Understanding Newton's Law: Motion of a Bird in a Rotating Frame of Reference
  • wikidrox
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2
Struggling with AP Multiple Choice: ky Differential Equation
  • tandoorichicken
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2
Solving a Camera Lens Problem: Height of Image on Film
  • jribbe1
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2
Calculating the Increase in Earth's Mass Due to Solar Energy | e=mc2 Explained
  • blackflub
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How Does a Boy Affect the Angular Velocity of a Merry-Go-Round When He Jumps On?
  • masamune
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Calculate Amplitude of SHM for Block Connected to Spring and Embedded Bullet
  • PhysicsPhun
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3
How Do You Convert dB to W/m² in Sound Intensity Calculations?
  • new324
  • · Replies 6 ·
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6
Relative Brightness of A-E, C+D
  • Empire
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QM scattering - Section 19.5 in Shankar
  • gwiazdka
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1
How Do Molecules Stay Distinct Between the Stratosphere and Troposphere?
  • Soilwork
  • · Replies 7 ·
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Help with accelration due to gravity experiment
  • keil
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2
Visualization of a wire & magnetic field
  • AngelofMusic
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2
Solve Two Trains Problem - Find Eagle's Distance & Flight Times
  • lucianb
  • · Replies 6 ·
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6
What is the inductance of a solenoid with a soft iron core?
  • pattiecake
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Calculating Angular Momentum and Precession of a Toy Gyroscope
  • cuz937100
  • · Replies 5 ·
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This is very confusing multiple choice question
  • Evergreen
  • · Replies 8 ·
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8
Calculus - Derivatives and Applications
  • toosm:)ey
  • · Replies 6 ·
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6
Finding Concavity: Solve with x's and y's | Rutgers
  • ACLerok
  • · Replies 4 ·
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4
Calculating Diffraction Angle and Grating Density for Interference Problems
  • mustang
  • · Replies 2 ·
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2
Induced superficial charge distribution of a sphere
  • ReyChiquito
  • · Replies 2 ·
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2
Need help with centripetal acceleration questions
  • wikidrox
  • · Replies 2 ·
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2
Dummy Variables in Taylor Series
  • AngelofMusic
  • · Replies 2 ·
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2
Balancing Two Uniform Beams: Calculating Forces & Angles
  • masamune
  • · Replies 2 ·
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2
Can a Linear Transformation Be Onto If the Codomain's Dimension Is Higher?
  • discoverer02
  • · Replies 5 ·
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5
How Does Moving a Magnet Near a Coil Demonstrate Lenz's Law?
  • UrbanXrisis
  • · Replies 3 ·
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3
Help With Physics Assignment: Determining Maximum Velocity & Spring Constant
  • g4wonhyo
  • · Replies 1 ·
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1
Help with Math Problems: Q.2(a), Q.6(c)!
  • mcintyre_ie
  • · Replies 16 ·
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16
Lagrange' s eequations of a suspended set of rods
  • student1938
  • · Replies 26 ·
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26
Experiments regarding C of A.M.
  • ACLerok
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2
Solve Radio Inductor Problem: Find Frequency for 12V, 2.2mA, 4.6mH
  • Cernie
  • · Replies 4 ·
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4
What Happens When an 11 eV Photon Collides with a Hydrogen Atom?
  • gnome
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Physics Help: Electricity & Circuits
  • MJ
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2
What is the derivation of 2e^{2t}\sin{t} in Laplace transform?
  • faust9
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Doppler Shift Equation: How to Calculate Frequency of a Stationary Train
  • Format
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2
Straight-line Kinematics problem
  • LD_90
  • · Replies 4 ·
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4
Moment of Inertia and anemometer
  • masamune
  • · Replies 6 ·
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6