Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Model rocket with variable acceleration, free fall, and parachute descent
- Duke77
- · Replies 2 ·
Light rays through a window pane
- cowgiljl
- · Replies 2 ·
Proving the Mass Difference in Our Solar System's Sun and Planet P's Sun
- exequor
- · Replies 6 ·
Calculating the Decay Constant of Carbon 14
- EIRE2003
- · Replies 6 ·
Model rocket with constant acceleration reaching maximum height
- shivas
- · Replies 6 ·
How Does Water Pressure Change with Column Height and Diameter?
- mjp42@csufresno.edu
- · Replies 3 ·
Thermodynamics - calculate entropy
- alpha_wolf
- · Replies 3 ·
What Is the Annual Rate of Increase for the Price of Milk?
- mustang
- · Replies 3 ·
Solving a Trigonometry Proof: 1+ cos Ө =?
- Alethia
- · Replies 5 ·
What is the Sign Convention for Displacement in Hooke's Law?
- Alethia
- · Replies 13 ·
Estimating a neutrino mass upper limit from supernova data
- curious george
- · Replies 1 ·
How Do You Solve These Complex Momentum Problems?
- Saad
- · Replies 2 ·
How can I find the initial speed using SUVAT equations?
- Simon143
- · Replies 2 ·
How Do Momentum and Kinetic Energy Affect Real-World Physics Problems?
- Saad
- · Replies 8 ·
Ball thrown at angle strikes wall perpendicularly at 4.9 m
- redshift
- · Replies 10 ·
Calculating Average Acceleration in Uniform Circular Motion
- LD_90
- · Replies 2 ·
What are the fundamental principles of matter and its properties?
- SigInt
- · Replies 2 ·
Solving the Transverse Wave on a Rope: Tension and Force
- masamune
- · Replies 3 ·
Finding initial velocity from instantaneous force and mass in projectile motion
- ginnerpip
- · Replies 2 ·
Why Does Removing the Negative Sign in the Charge Equation Affect the Result?
- cseet
- · Replies 2 ·
What is the equation for f(x) using just a,b,c,d in a geometric series?
- drklrdbill
- · Replies 10 ·
Solving Sturn-Liousville problem
- JasonZ
- · Replies 4 ·
Heat required to warm ice from -25°C to water at 25°C
- new324
- · Replies 2 ·
Integral of (x+2)/√(x²+6x+4)
- Zurtex
- · Replies 5 ·
Light Refraction at 40 Degrees: Material 1 to Material 2
- athenaroa
- · Replies 2 ·
Mathematical induction proof for sum of squares of even numbers
- ptex
- · Replies 2 ·
Why do you see a red sunset sometimes?
- Matty
- · Replies 3 ·
What Kind of Motion Does Hooke's Law Describe?
- EIRE2003
- · Replies 2 ·
What Does it Mean to be Singly Ionized? - Spring Constant of DNA
- JJaX
- · Replies 2 ·
Energy and Momentum in Electromagnetic waves
- desibrij_1785
- · Replies 2 ·
RC Circuit:placement of capacitor on circuit
- Howdynow
- · Replies 3 ·
Why does the colour black heat faster than white?
- BryceG
- · Replies 4 ·
Optimal Laser Tagging Technique for Blue Crabs in Seawater
- holly
- · Replies 8 ·
Function of a random gaussian variable
- Jply
- · Replies 2 ·
Calculating Interest with Compounding: Problem 9c
- mustang
- · Replies 2 ·
Can someone show me how to do this dynamics question?
- Bebop
- · Replies 5 ·
How to Experimentally Determine the Specific Heat Capacity of Ice
- xxpsychoxx
- · Replies 2 ·
Projectile motion and release angle
- BananaRed
- · Replies 3 ·
Building a catapult to launch a ping-pong ball 10 metres
- RaYip
- · Replies 2 ·
Maximum weight supported by two cords at 45° and horizontal
- wikidrox
- · Replies 2 ·
Frame of reference and Newton's third law
- wikidrox
- · Replies 2 ·
How Do You Calculate Initial Velocity in a Ballistic Pendulum Problem?
- ussjt
- · Replies 3 ·
How Do You Calculate Focal Length in a Lens Lab Experiment?
- MandolinGirl
- · Replies 2 ·
Help with circle tangents, vector properties, wedge dynamics and dv/dt=g-kv
- mcintyre_ie
- · Replies 5 ·
How far behind a convex lens will the image of a small blue ball be formed?
- athenaroa
- · Replies 2 ·
Getting Crabby at Semester's End
- holly
- · Replies 4 ·
Prove FE is perpendicular to AB when chords meet in a semicircle
- Saad
- · Replies 2 ·
How to Find the Partial Sum of a Series?
- Feynmanfan
- · Replies 2 ·
Microscope focal length and object distance problems
- eku_girl83
- · Replies 2 ·
Can You Solve This Trigonometry Problem Involving Equal Sides and Angles?
- Johnny Leong
- · Replies 4 ·
Problem with tether balls - How high should I release the ball
- raferalston
- · Replies 2 ·
How Do You Rearrange the Speed of Sound Equation to Solve for M in Gas?
- cseet
- · Replies 2 ·
How Do Interference Patterns and Diffraction Determine Angles in Physics?
- mustang
- · Replies 2 ·
Solving 'How Much Solution' Problems: Minoxidil Example
- Marlona Ely
- · Replies 2 ·
Solving the Velocity and Displacement of a Package After an Explosion
- Clutch306
- · Replies 2 ·
Calculating Beat Frequency in Ultrasound Doppler Effect
- jjlittel
- · Replies 2 ·
How Fast is a Galaxy Receding When Hydrogen Light Frequency Changes?
- .cfg
- · Replies 9 ·
Simple Quantum Mechanics Question - Express Wave Function
- samoth1
- · Replies 9 ·
Why Does x*(x+1)%5 Only Yield the Remainders 0, 1, and 2?
- AngelofMusic
- · Replies 2 ·
The Hydrogen Atom: Photon Energy of n=4 to n=3 Transition
- UrbanXrisis
- · Replies 2 ·
How Does Joint Probability Density Determine Dependence Between Variables?
- Lucy77
- · Replies 2 ·
Derivative of 1/(4x^2 + 3x - x)
- UrbanXrisis
- · Replies 6 ·
Rotational inertia and torque of four masses at square vertices
- Clutch306
- · Replies 2 ·
What is the probability that it is both a king and a club?
- ilikephysics
- · Replies 2 ·
Energy Conservation and Escape Velocity
- Gilgalad
- · Replies 5 ·
Phase difference, coherence, diffraction and Michelson fringes
- retupmoc
- · Replies 2 ·
What is the energy released during alpha particle emission in Am-241 decay?
- tandoorichicken
- · Replies 2 ·
Block sliding down 30° incline with friction and air resistance
- frenika
- · Replies 3 ·
What Is the Value of Theta in the Equation 6 - tan(theta) = 2sec^2(theta)?
- UrbanXrisis
- · Replies 2 ·
A circuit with capacitor and resistor
- jazzchan
- · Replies 3 ·
Calculate equilibrium concentraion of NO2(g)
- decibel
- · Replies 5 ·
Work done by gravity and friction on a 5kg block sliding down a 30° incline
- bjohnston04
- · Replies 2 ·
Convolution integral exercises with impulse response and step functions
- lizm
- · Replies 15 ·
Bernoulli's equation and continuity for fluid mechanics test
- Maxwell
- · Replies 2 ·
Image Location for a Double Concave Mirror (-20 in Focal Length)
- cowgiljl
- · Replies 5 ·
How much energy is carried by one quantum of these electromagnetic waves?
- mustang
- · Replies 6 ·
Why Do Electroscope Leaves Separate Wider When a Balloon is Quickly Moved Away?
- username
- · Replies 2 ·
Recursie Algorithms. Is my solution ok?
- ptex
- · Replies 6 ·
Solving a Pendulum Physics Problem: Finding the Height of a Colliding System
- Clutch306
- · Replies 2 ·
Help with introductory physics problems
- gbdavidx
- · Replies 4 ·
Convolution integral with impulse and step functions
- lizm
- · Replies 2 ·
Collision between two blocks on a table
- Clutch306
- · Replies 2 ·
Solving Angular Velocity of Pulley/Cylinder with Mass M, I, m, h
- Clutch306
- · Replies 2 ·
Cartesian product notation and plotting the set {(y,z)|y-z≥3}
- ptex
- · Replies 5 ·
Electron force in a magnetic field: velocity left, B-field into page
- UrbanXrisis
- · Replies 4 ·
Calculating Kinetic Energy and Speed of a Rolling Sphere on an Inclined Surface
- Clutch306
- · Replies 2 ·
Determine the speed of the stone
- hyen84
- · Replies 2 ·
Solving Ideal Gas Law: Find Final Volume of Helium
- Xamfy19
- · Replies 2 ·
Hortizontal acceleration of a motorcycle
- BananaRed
- · Replies 3 ·
How Does Constriction in the Bronchus Affect Air Pressure?
- JamesL
- · Replies 2 ·
How Do You Calculate Kinetic and Potential Energy in Projectile Motion?
- falcon0311
- · Replies 6 ·
Simple harmonic motion in a rocket?
- PhysicsPhun
- · Replies 6 ·
How Much Power is Needed for a Car to Climb an 8% Grade?
- falcon0311
- · Replies 8 ·
Comparing angular speed, velocity and centripetal acceleration for cars in circular motion
- wikidrox
- · Replies 2 ·
Calculating Final Temperature of Ice-Water Mixture: Grade 10 Physics Question
- smook
- · Replies 3 ·
Object position for 4x upright image in concave mirror
- Aerospace
- · Replies 6 ·
Vector in cylindrical polar coordinates
- ilikephysics
- · Replies 2 ·
Find n where the sum from i=1 to n equals 34
- ptex
- · Replies 4 ·
Resistance of parallel resistors
- athenaroa
- · Replies 3 ·
How does torque relate to stopping a rotating wheel?
- ProSk8ter474
- · Replies 2 ·