Introductory Physics Homework Help Forum

Post thread
Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Relative Velocity as far as I can tell
  • merlinMan
  • · Replies 4 ·
Replies
4
Help with Homework Problem on Acceleration
  • shawonna23
  • · Replies 2 ·
Replies
2
Help with total distance problem
  • ramin86
  • · Replies 5 ·
Replies
5
Rabbit vs. Tortoise: A 100-m Race
  • huong03
  • · Replies 2 ·
Replies
2
Finding Velocity and Displacement
  • BlackMamba
  • · Replies 8 ·
Replies
8
Analyzing an Electron's Velocity Vector Problem
  • 0aNoMaLi7
  • · Replies 2 ·
Replies
2
Calculating Buoyant Force: Brain Blocks Pt II
  • falcon0311
  • · Replies 2 ·
Replies
2
Is Harmonic Oscillation Independent of Gravity?
  • Dracovich
  • · Replies 7 ·
Replies
7
Why Are Repeating Decimals Less Than Denominator?
  • uranium_235
  • · Replies 4 ·
Replies
4
Physics Problems: Calculating Height and Speed in Real-Life Situations
  • lmf22
  • · Replies 2 ·
Replies
2
Finding the Displacement of a Duck Undergoing Multiple Forces
  • pinky2468
  • · Replies 6 ·
Replies
6
Calculating Electric Field Strength at a Corner with No Charge
  • 600burger
  • · Replies 3 ·
Replies
3
Calculate Bagel Tossing Speed and Catching Position?
  • Whatupdoc
  • · Replies 3 ·
Replies
3
Very simple symbol question regarding a logarithmic function (I can't find it)
  • singleton
  • · Replies 2 ·
Replies
2
Physics: Vector Help - Magnitude & Angle Calculations
  • buffgilville
  • · Replies 3 ·
Replies
3
Calculate Grams of Solute Needed for 0.1 N Ca(OH)2 & 5% NaCl
  • buffgilville
  • · Replies 3 ·
Replies
3
Dirac Notation Help: Solve H, A, K Problems
  • Hypnotoad
  • · Replies 6 ·
Replies
6
Solving a Physics Problem | Finding dx and its Magnitude - Answer Included
  • tinhnho
  • · Replies 3 ·
Replies
3
Has Anyone Participated in the DuPont Science Essay Contest?
  • Simfish
  • · Replies 1 ·
Replies
1
Simplifying and Integrating Cosine Functions
  • Whatupdoc
  • · Replies 11 ·
Replies
11
Involving a line being parallel to itself
  • KennyIsGod
  • · Replies 7 ·
Replies
7
Having some trouble interpretting several problems (link fixed)
  • EasyStyle4747
  • · Replies 4 ·
Replies
4
How Is Maximum Height Calculated for a Rocket in Free-Fall Acceleration?
  • strugglinGimp
  • · Replies 6 ·
Replies
6
Understanding Forces and Vectors: Solving a 2D Acceleration Problem
  • pinky2468
  • · Replies 8 ·
Replies
8
How Is the Spring Constant Dimensionally Analyzed in Oscillation Equations?
  • lotusbloom
  • · Replies 2 ·
Replies
2
How to Determine Reaction Forces at Points A and C in a Structured Beam?
  • Clausius2
  • · Replies 6 ·
Replies
6
Proofs advice/places to find more practice proofs
  • Mark
  • · Replies 2 ·
Replies
2
Help with Mechanics: Towing a Barge with Flexible Cable
  • teru
  • · Replies 2 ·
Replies
2
How Does a Plumb Bob Deviate at 34.5° North Latitude Due to Earth's Rotation?
  • xcutexboax
  • · Replies 11 ·
Replies
11
Solve x in [0,2π]: Logs Homework Help
  • UrbanXrisis
  • · Replies 7 ·
Replies
7
Calculating Elephant Seal's Displacement - Kinematics Problem
  • shawonna23
  • · Replies 6 ·
Replies
6
Math Substitution for Solving Equations | Attached Picture Included
  • COCoNuT
  • · Replies 18 ·
Replies
18
Calculus-based physics mechanics
  • dqasem
  • · Replies 3 ·
Replies
3
Vector and Free Fall Problem Solving
  • BlackMamba
  • · Replies 5 ·
Replies
5
Solve Basic Math: Find "a" in y = a - ab
  • Jasonp914
  • · Replies 10 ·
Replies
10
Help with 4 Physics Problems: Displacement & Distance
  • daveman12340
  • · Replies 2 ·
Replies
2
Solve for Launch Velocity Components in a Football Field Goal Attempt
  • shawonna23
  • · Replies 5 ·
Replies
5
Algebraic Equations for Motion and Currency: Solving for Variables
  • Omid
  • · Replies 3 ·
Replies
3
Just can't seem to get this one
  • JohnQ
  • · Replies 3 ·
Replies
3
Calculating Probability in a Lying Society: Truth-Telling on a Mysterious Island
  • Jin314159
  • · Replies 10 ·
Replies
10
Solving for the Horizontal Component of Velocity in a Jetliner Moving at 390 m/s
  • shawonna23
  • · Replies 4 ·
Replies
4
Solve Math Word Problems: 2 Examples & Help Appreciated
  • chopster
  • · Replies 5 ·
Replies
5
How much time does it take the walker to make the round trip?
  • EaGlE
  • · Replies 3 ·
Replies
3
My Struggles with Physics: Tips for Studying the Subject
  • Fused
  • · Replies 8 ·
Replies
8
Having alot of trouble with projectile motion prob
  • justinbaker
  • · Replies 4 ·
Replies
4
Finding Angle for Ball to be Thrown to Catch Woman
  • merlinMan
  • · Replies 3 ·
Replies
3
Calculating Distance of Ball Launch in Semicircular Chute
  • EaGlE
  • · Replies 4 ·
Replies
4
Solving Ellipse Question: x=f*Sin(wt+\theta), y=g*Sin(wt+\phi)
  • DarkEternal
  • · Replies 6 ·
Replies
6
Finding Stationary Points in a Rational Function
  • HeyHow!
  • · Replies 4 ·
Replies
4
Solving Quadratic Word Problems: Finding the Dimensions of a Rectangle
  • leekiss
  • · Replies 2 ·
Replies
2
Calculating Net Force: Equilateral Triangle with Point Charges
  • psruler
  • · Replies 3 ·
Replies
3
Integral problem with natural log ($5 to whoever gets it)
  • formula107
  • · Replies 8 ·
Replies
8
Calculating Distance and Direction in Whiteout Conditions
  • GingerBread27
  • · Replies 12 ·
Replies
12
Energy Question - Burning off Breakfast
  • coglon
  • · Replies 4 ·
Replies
4
Drag Racing: Will Cars be Same Distance Apart?
  • Omid
  • · Replies 10 ·
Replies
10
How Does Plate Separation Affect Voltage in a Parallel-Plate Capacitor?
  • einstein_from_oz
  • · Replies 3 ·
Replies
3
How Long Does a Train Take for a 48 km Trip with Intermediate Stops?
  • physicsss
  • · Replies 3 ·
Replies
3
Why is Everything Accelerating on the Surface of Earth?
  • Omid
  • · Replies 4 ·
Replies
4
Average acceleration = inst accleration ?
  • Omid
  • · Replies 4 ·
Replies
4
What are the components and sum of two vectors?
  • physicsss
  • · Replies 9 ·
Replies
9
Why Does the Swimming Angle Calculation Depend on Trigonometric Functions?
  • Fused
  • · Replies 5 ·
Replies
5
How Can I Join Stick Heads for Walking Stick Figures?
  • Vance
  • · Replies 2 ·
Replies
2
How Does Time-Dependent Perturbation Theory Explain Quantum State Evolution?
  • kakarukeys
  • · Replies 3 ·
Replies
3
Graphing x=y-y^2 to Understanding and Visualizing the Equation
  • ACLerok
  • · Replies 7 ·
Replies
7
Modelling Salt and Water Flow in a Tank
  • DennisG
  • · Replies 2 ·
Replies
2
Cracking the Vault: How Long Will it Take to Try Every Combination?
  • TKL
  • · Replies 5 ·
Replies
5
Probability Density in Quantum Mechanics
  • JamesJames
  • · Replies 5 ·
Replies
5
How to solve this trig equation in radians 2sin^2(x) + sin(x) - 1=0
  • UrbanXrisis
  • · Replies 5 ·
Replies
5
Solving Terminating Angles & Quandrants - f(pi)=-pi
  • UrbanXrisis
  • · Replies 6 ·
Replies
6
How Do You Solve These Probability and Combinatorics Problems?
  • wmosley
  • · Replies 3 ·
Replies
3
Kinematics Problem and final velocity
  • Brett
  • · Replies 2 ·
Replies
2
A little help with electric potential.
  • JamesL
  • · Replies 3 ·
Replies
3
How Do You Calculate Conditional Probabilities with Joint PDFs?
  • franz32
  • · Replies 2 ·
Replies
2
How High Does the Rock Go When Thrown from a Building?
  • EaGlE
  • · Replies 4 ·
Replies
4
How Do I Solve This Complex Kinematics Displacement Problem?
  • soccerjayl
  • · Replies 6 ·
Replies
6
What is the formula for the sequence of points Pn approaching (2/5, 1/5)?
  • gravenewworld
  • · Replies 5 ·
Replies
5
Electric Fields x-component problem
  • masamune
  • · Replies 2 ·
Replies
2
Confused by Geometry Problem - Can You Help?
  • Imparcticle
  • · Replies 4 ·
Replies
4
Physics-12th grade-forces and friction PLEASE HELP ME
  • KatieM
  • · Replies 9 ·
Replies
9
Solving arcsin(sin 3π): Step-by-Step Guide
  • cdhotfire
  • · Replies 6 ·
Replies
6
How Much Force Must a Diving Suit Window Withstand at 150m Depth?
  • jimithing
  • · Replies 2 ·
Replies
2
What Do These Constant Velocity and Acceleration Formulas Mean?
  • COCoNuT
  • · Replies 2 ·
Replies
2
Calculating Relative Velocity on a Moving Ship: Magnitude and Direction
  • Clari
  • · Replies 8 ·
Replies
8
Finding the limit of lim_(h-->0) (f(1+h,2) - f(1,2))/h
  • TSN79
  • · Replies 5 ·
Replies
5
Stuck on AP Physics. Need Help with Sines or Cosines
  • doughrtyHT
  • · Replies 2 ·
Replies
2
Calculating Limits: Understanding Lim 1 - cos(x)/x^2 x->0
  • Halcyon99
  • · Replies 6 ·
Replies
6
What is the difference in time the balls spend in the air?
  • holly111
  • · Replies 3 ·
Replies
3
Trajectory of diver with vertical and horizontal velocities
  • Fused
  • · Replies 3 ·
Replies
3
Efficient Work Solutions: Teamwork in Word Problems Made Easy
  • Omid
  • · Replies 4 ·
Replies
4
Alternating Current 6: Period, Load Resistance, RMS & Peak Power
  • islandguy
  • · Replies 2 ·
Replies
2
A leaky 100 microfarad capacitor is charged to a potental difference
  • islandguy
  • · Replies 2 ·
Replies
2
Physics book slides off a horizontal
  • COCoNuT
  • · Replies 7 ·
Replies
7
Thanks Tide but i still dont understand the second half of the question
  • alonzo
  • · Replies 3 ·
Replies
3
Projectile Motion - A little Lost
  • merlinMan
  • · Replies 3 ·
Replies
3
Free fall acceleration flowerpot problem
  • COCoNuT
  • · Replies 6 ·
Replies
6
How Can a Tourist Escape a Bear by Calculating Displacement and Velocity?
  • BlackMamba
  • · Replies 8 ·
Replies
8
How to begin oscillation in steady state?
  • bullet_ballet
  • · Replies 4 ·
Replies
4
Max. Speed in Uniform Circular Motion Over Humpback Bridge: 45m Radius
  • Neil
  • · Replies 4 ·
Replies
4
What is the value of n for 1 km distance between seeing and hearing an event?
  • needhelpperson
  • · Replies 4 ·
Replies
4
Intro. Physics: scaling problem
  • Antepolleo
  • · Replies 3 ·
Replies
3