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.
Could use some help on physics (mechanics problem help)
  • shivas
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How Does Water Pressure Change with Column Height and Diameter?
  • mjp42@csufresno.edu
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3
Thermodynamics - calculate entropy
  • alpha_wolf
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3
What Is the Annual Rate of Increase for the Price of Milk?
  • mustang
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3
Solving a Trigonometry Proof: 1+ cos Ө =?
  • Alethia
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5
What is the Sign Convention for Displacement in Hooke's Law?
  • Alethia
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13
Estimating a neutrino mass upper limit from supernova data
  • curious george
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1
How Do You Solve These Complex Momentum Problems?
  • Saad
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2
How can I find the initial speed using SUVAT equations?
  • Simon143
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2
How Do Momentum and Kinetic Energy Affect Real-World Physics Problems?
  • Saad
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8
Need help with projectile motion problem
  • redshift
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10
Calculating Average Acceleration in Uniform Circular Motion
  • LD_90
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2
What are the fundamental principles of matter and its properties?
  • SigInt
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2
Solving the Transverse Wave on a Rope: Tension and Force
  • masamune
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3
HELP, need velocity from force and mass
  • ginnerpip
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2
Why Does Removing the Negative Sign in the Charge Equation Affect the Result?
  • cseet
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2
What is the equation for f(x) using just a,b,c,d in a geometric series?
  • drklrdbill
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10
Solving Sturn-Liousville problem
  • JasonZ
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4
Quick question. Latent heat problem.
  • new324
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2
Stuck on an Integral: Need a Nudge in the Right Direction!
  • Zurtex
  • · Replies 5 ·
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5
Light Refraction at 40 Degrees: Material 1 to Material 2
  • athenaroa
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2
Am I on the right track with this induction question?
  • ptex
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2
Why do you see a red sunset sometimes?
  • Matty
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3
What Kind of Motion Does Hooke's Law Describe?
  • EIRE2003
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2
What Does it Mean to be Singly Ionized? - Spring Constant of DNA
  • JJaX
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2
Energy and Momentum in Electromagnetic waves
  • desibrij_1785
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2
RC Circuit:placement of capacitor on circuit
  • Howdynow
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3
Why does the colour black heat faster than white?
  • BryceG
  • · Replies 4 ·
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4
Optimal Laser Tagging Technique for Blue Crabs in Seawater
  • holly
  • · Replies 8 ·
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8
Function of a random gaussian variable
  • Jply
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2
Calculating Interest with Compounding: Problem 9c
  • mustang
  • · Replies 2 ·
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2
Can someone show me how to do this dynamics question?
  • Bebop
  • · Replies 5 ·
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5
How to Experimentally Determine the Specific Heat Capacity of Ice
  • xxpsychoxx
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2
Projectile motion and release angle
  • BananaRed
  • · Replies 3 ·
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3
Help with Science Project, please
  • RaYip
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2
Max Weight Supported by 2 Cords: Need Help?
  • wikidrox
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2
Frame of reference and Newton's third law
  • wikidrox
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2
How Do You Calculate Initial Velocity in a Ballistic Pendulum Problem?
  • ussjt
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3
How Do You Calculate Focal Length in a Lens Lab Experiment?
  • MandolinGirl
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2
Help with Questions: Circles, Vectors, Wedges & dv/dt=g-kv
  • mcintyre_ie
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5
How far behind a convex lens will the image of a small blue ball be formed?
  • athenaroa
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2
Getting Crabby at Semester's End
  • holly
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4
Proving Perpendicularity of FE & AB in a Semicircle
  • Saad
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2
How to Find the Partial Sum of a Series?
  • Feynmanfan
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2
Help with microscope/telescope problems
  • eku_girl83
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2
Can You Solve This Trigonometry Problem Involving Equal Sides and Angles?
  • Johnny Leong
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4
Problem with tether balls - How high should I release the ball
  • raferalston
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2
How Do You Rearrange the Speed of Sound Equation to Solve for M in Gas?
  • cseet
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2
How Do Interference Patterns and Diffraction Determine Angles in Physics?
  • mustang
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2
Solving 'How Much Solution' Problems: Minoxidil Example
  • Marlona Ely
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2
Solving the Velocity and Displacement of a Package After an Explosion
  • Clutch306
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2
Calculating Beat Frequency in Ultrasound Doppler Effect
  • jjlittel
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2
How Fast is a Galaxy Receding When Hydrogen Light Frequency Changes?
  • .cfg
  • · Replies 9 ·
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9
Simple Quantum Mechanics Question - Express Wave Function
  • samoth1
  • · Replies 9 ·
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9
Why Does x*(x+1)%5 Only Yield the Remainders 0, 1, and 2?
  • AngelofMusic
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2
The Hydrogen Atom: Photon Energy of n=4 to n=3 Transition
  • UrbanXrisis
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2
How Does Joint Probability Density Determine Dependence Between Variables?
  • Lucy77
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2
Derivative of 1/(4x^2 + 3x - x)
  • UrbanXrisis
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6
Rotational Inertia, Torque & Angular Acceleration of 4-Particle Rigid Body
  • Clutch306
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2
What is the probability that it is both a king and a club?
  • ilikephysics
  • · Replies 2 ·
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2
Energy Conservation and Escape Velocity
  • Gilgalad
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5
Understanding Phase Difference, Diffraction & Michelson Interferometer
  • retupmoc
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2
What is the energy released during alpha particle emission in Am-241 decay?
  • tandoorichicken
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2
Block on Inclined Plane: Velocity & Displacement Eqns & Calcs
  • frenika
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3
What Is the Value of Theta in the Equation 6 - tan(theta) = 2sec^2(theta)?
  • UrbanXrisis
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A circuit with capacitor and resistor
  • jazzchan
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3
Calculate equilibrium concentraion of NO2(g)
  • decibel
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5
Force & Energy: 5kg Block Slides 2.4m in 2s
  • bjohnston04
  • · Replies 2 ·
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2
Help with impulse response and convolution?
  • lizm
  • · Replies 15 ·
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15
Physics Test Help: Fluid Mechanics Questions
  • Maxwell
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2
Image Location for a Double Concave Mirror (-20 in Focal Length)
  • cowgiljl
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5
How much energy is carried by one quantum of these electromagnetic waves?
  • mustang
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6
Why Do Electroscope Leaves Separate Wider When a Balloon is Quickly Moved Away?
  • username
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2
Recursie Algorithms. Is my solution ok?
  • ptex
  • · Replies 6 ·
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6
Solving a Pendulum Physics Problem: Finding the Height of a Colliding System
  • Clutch306
  • · Replies 2 ·
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2
I really nead some help in my science class
  • gbdavidx
  • · Replies 4 ·
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4
Impulse response and convolution? any help from anyone?
  • lizm
  • · Replies 2 ·
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2
Momentum & Kinetic Energy: Blocks A & B Collide
  • Clutch306
  • · Replies 2 ·
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2
Solving Angular Velocity of Pulley/Cylinder with Mass M, I, m, h
  • Clutch306
  • · Replies 2 ·
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2
Are X,Y,Z Equal? Examining {(y,z)|y-z> or = 3}
  • ptex
  • · Replies 5 ·
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5
Electron Force B-Field: Direction & Velocity
  • UrbanXrisis
  • · Replies 4 ·
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4
Calculating Kinetic Energy and Speed of a Rolling Sphere on an Inclined Surface
  • Clutch306
  • · Replies 2 ·
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2
Determine the speed of the stone
  • hyen84
  • · Replies 2 ·
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2
Solving Ideal Gas Law: Find Final Volume of Helium
  • Xamfy19
  • · Replies 2 ·
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2
Hortizontal acceleration of a motorcycle
  • BananaRed
  • · Replies 3 ·
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3
How Does Constriction in the Bronchus Affect Air Pressure?
  • JamesL
  • · Replies 2 ·
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2
How Do You Calculate Kinetic and Potential Energy in Projectile Motion?
  • falcon0311
  • · Replies 6 ·
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6
Simple harmonic motion in a rocket?
  • PhysicsPhun
  • · Replies 6 ·
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6
How Much Power is Needed for a Car to Climb an 8% Grade?
  • falcon0311
  • · Replies 8 ·
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8
Help with ratios of velocity and centripetal acceleration
  • wikidrox
  • · Replies 2 ·
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2
Calculating Final Temperature of Ice-Water Mixture: Grade 10 Physics Question
  • smook
  • · Replies 3 ·
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3
Find Object Position for Upright and 4x Sized Image | Concave Mirror Formula
  • Aerospace
  • · Replies 6 ·
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6
Vector in cylindrical polar coordinates
  • ilikephysics
  • · Replies 2 ·
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2
Solve for n: 2n² - 4n + 7 = 34, n > 1 | Example and Explanation
  • ptex
  • · Replies 4 ·
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4
Resistance of parallel resistors
  • athenaroa
  • · Replies 3 ·
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3
Understanding Torque in Wheel Stopping: A Quick Guide
  • ProSk8ter474
  • · Replies 2 ·
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2
What is the period of a standing transverse wave on a flexible string?
  • PhysicsPhun
  • · Replies 7 ·
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7
  • Poll Poll
Help with determining a wavelength
  • deimos
  • · Replies 2 ·
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2
Is {(sinx)^2, (cosx)^2} a Basis of W in Linear Algebra?
  • discoverer02
  • · Replies 3 ·
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3
Heat Effects on an Aluminum Annular Ring
  • Xamfy19
  • · Replies 3 ·
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3