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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Tire rolling down slope - angle - friction
- mybrohshi5
- · Replies 2 ·
Electric Charges, Electric Forces and Electric Fields
- hirschy
- · Replies 8 ·
Diverging lens, calculating image location
- Revvi
- · Replies 1 ·
Concept Question. Record turntable rotates at constant angular velocity.
- balletgirl
- · Replies 1 ·
Colliding Freight Cars: Kinetic Energy Transformed
- CanadianEh
- · Replies 1 ·
Find depression in wire with hanging mass
- bodensee9
- · Replies 3 ·
Are Two Spherical Capacitors in Series Affected by Outer Applied Voltage?
- jay3050
- · Replies 5 ·
Excited hydrogen atom and wavelength
- dev-hud
- · Replies 1 ·
Simple DC Circuit (That I Can't Solve)
- sweetdion
- · Replies 7 ·
DC circuit with switch and capacitor: currents and charge
- sweetdion
- · Replies 12 ·
Will the Cart Roll Down the Hill Despite Friction?
- rawr8712
- · Replies 2 ·
Fluid velocity (Bernoulli's Principle?)
- lifeiseasy
- · Replies 4 ·
How Do You Calculate Angular Acceleration of a Wheel?
- balletgirl
- · Replies 1 ·
How Much Power is Needed to Drag a Table Across a Brick Floor?
- dgomez89
- · Replies 3 ·
Spectacles, Focal length and Lens Formula
- ZedCar
- · Replies 2 ·
Motor power required for 75 rpm cam-driven plunger shaft
- Whatamiat
- · Replies 4 ·
How Do You Calculate Tension and Acceleration in a Two-Block Pulley System?
- moe6142
- · Replies 3 ·
Partition function of a classical spring
- lowbattery
- · Replies 1 ·
Rate of Magnetic Field Change and current
- ihearyourecho
- · Replies 3 ·
Does yield strength depend on rod dimensions or material only?
- pukey123
- · Replies 3 ·
Creating an Air Flow Meter Using an Iron Heating Element
- RApak
- · Replies 2 ·
Finding Forces Acting on Mast: Trigonometry Method
- dolphiinx
- · Replies 1 ·
What Are the Tensions and Forces in a Multi-Pulley System?
- narfarnst
- · Replies 2 ·
Conservation of Angular Momentum of Puck Problem
- Twiddler
- · Replies 8 ·
Charging and Discharging RC circuit
- lha08
- · Replies 2 ·
Observing the image of the sun (optic)
- seifer9
- · Replies 5 ·
Translational Energy of Molecules and Vrms
- 1st1
- · Replies 4 ·
Merry-go-round. angular velocity
- mybrohshi5
- · Replies 2 ·
RC circuit and a microfarad capacitor
- lha08
- · Replies 1 ·
Two blocks with pulley, friction
- nazerofsun
- · Replies 1 ·
How to Use Euler's Method to Approximate Velocity in a Quarter Circle Motion
- joman138
- · Replies 1 ·
Finding Rate of Energy Loss in an RC Discharge Circuit
- lha08
- · Replies 1 ·
Moment of Inertia for three spherical masses
- MissPenguins
- · Replies 12 ·
Potential energy and momentum question
- Daniiel
- · Replies 10 ·
How Do You Calculate the Flow Speed of Medicine in a Syringe?
- yang09
- · Replies 24 ·
Projectile Motion Check + Good tutorial?
- rudders93
- · Replies 4 ·
Using frequency to calculate resonances
- jimisreincarn
- · Replies 5 ·
Variable inductor and resistor for theater light dimmer
- reising1
- · Replies 1 ·
Mechanics problem, how does the friction affect the movement of an object
- sandercock
- · Replies 9 ·
Liquid velocity exiting a tapered pipe using continuity equation
- yang09
- · Replies 12 ·
Defibrillator discharges. need to find time constant
- gujrichick
- · Replies 4 ·
Thermodynamics (Adiabatic PV Diagram)
- alexgmcm
- · Replies 1 ·
Schrodinger's Equation, Potential Energy Step E>U
- Oijl
- · Replies 5 ·
Electric field and potential at center of square with alternating charges
- c-murda
- · Replies 9 ·
Blackbodies - Wien's Law and Planck's Radiation Formula
- lachy
- · Replies 4 ·
Closing a Circuit 24.89 Giancoli
- vjk2
- · Replies 3 ·
Electric Potential of charges on a rectangle
- Extra
- · Replies 1 ·
Finding the Central Force Given the Orbit
- phil ess
- · Replies 6 ·
Solving Young Modulus of Metal: Density, Length, Hammer Pulse Time
- lifeiseasy
- · Replies 2 ·
Is Archimedes principle violative of Newton's 3rd law of motion?
- ankit1
- · Replies 2 ·
Why is my graph of height vs velocity a straight line instead of a curve?
- TerryB
- · Replies 2 ·
How Far Does an Airplane Travel in 63 Minutes Against an Easterly Wind?
- roam
- · Replies 3 ·
How to Apply the Loop Rule in Circuit Analysis
- DeadFishFactory
- · Replies 1 ·
Rolling on an Incline: Will a Sphere Continue Pure Rolling?
- sachin123
- · Replies 4 ·
The magnetic field of moving point charges
- physics120
- · Replies 10 ·
Finding electric field from potential V=a+bx
- frozenguy
- · Replies 1 ·
Molar Specific Heat: Translation Only
- roam
- · Replies 1 ·
Energy transfer by conduction through a window
- amaryllia
- · Replies 1 ·
Min. angle at which ladder will not slip
- lockedup
- · Replies 1 ·
Time Period of a Pendulum in Circular Motion
- maverick280857
- · Replies 11 ·
Angular Momentum of a Comet Around the Sun
- Geoanth3
- · Replies 4 ·
Why Is There a Plus Sign in the Terminal Potential Difference Formula?
- lha08
- · Replies 1 ·
Maximum Potential Difference in Parallel Resistors with Equal Resistance
- lha08
- · Replies 3 ·
Gravitation Near Earth's Surface
- slayer16
- · Replies 1 ·
Force that Maintains Circular Motion
- x0ji11y
- · Replies 1 ·
Calculate grad X E Am I on the right track?
- frozenguy
- · Replies 4 ·
Experiment to find resistor resistance using a neon lamp
- Ali Asadullah
- · Replies 9 ·
Energy of an Object Falling Through the Earth (yes, all the way through)
- Brilliant
- · Replies 7 ·
Explain me this concept (Laws of Motion)
- snshusat161
- · Replies 1 ·
Calculating speed needed to create motional EMF of given magnitude
- Linus Pauling
- · Replies 1 ·
What is the index of refraction of this substance?
- vucollegeguy
- · Replies 5 ·
Solving Energy Work Problem: Joe's Car, 300N, 10000N, 200m, 3min
- cheerspens
- · Replies 4 ·
Proving N = (360/Angle) - 1: Find the Solution Here
- luiseduardo
- · Replies 2 ·
Finding the focal length of a diverging lens in a two-lens system
- vucollegeguy
- · Replies 3 ·
Understanding Electromotive Force (emf) in a Circuit
- lha08
- · Replies 1 ·
Finding frequency of combined sinusoidal functions
- mmmboh
- · Replies 6 ·
Friction - truck on a slippery road
- vlpanther211
- · Replies 1 ·
Acceleration in terms of displacement
- ykeyani
- · Replies 2 ·
Ideas for futuristic mass transportation systems
- todo
- · Replies 3 ·
Initial Acceleration of a Center of Mass
- mparsons06
- · Replies 2 ·
Rotational inertia, angular speed, and kinetic energy
- bonekrushur
- · Replies 2 ·
Find Pressure Exerted on Roof by Raindrops in Tropical Storm
- gaobo9109
- · Replies 1 ·
Linear vs centripetal acceleration in circular motion
- Misr
- · Replies 10 ·
What Is the Angular Momentum of Two Masses on a Rotating Rod?
- MissPenguins
- · Replies 3 ·
Question on Newton's law of motion
- gaobo9109
- · Replies 1 ·
Schrodinger's Equation, Potential Energy Barrier U>E
- Oijl
- · Replies 3 ·
Electric field on a one dimensional line
- nisse pisse
- · Replies 1 ·
Finding the Spring Constant for a Mass on a Spring System
- anti404
- · Replies 3 ·
Finding volume, specific heat, and heat capacity from temperature data
- davidlettermn
- · Replies 6 ·
Is the Law of Motion Explanation Correct?
- snshusat161
- · Replies 9 ·
Particle Motion on a Potential Energy Curve
- umdece4
- · Replies 1 ·
Calculating Flight Angle and Thrust Force of a Gliding Plane with Engine Failure
- Hendrick
- · Replies 6 ·
How Does Refractive Index Relate to Wave Velocity Changes Between Media?
- Astar
- · Replies 1 ·
Mixing ice, steam, and water and find equilibrium
- vu10758
- · Replies 4 ·
What is the new angular speed of the merry-go-round after a child hops on?
- Paymemoney
- · Replies 3 ·
Motion (Newton's 2nd law + weight question)
- rudders93
- · Replies 5 ·
Tracking the Third Piece of an Exploding Ball
- Student91
- · Replies 8 ·
Physics of sound waves created by the human voice
- xchococatx
- · Replies 1 ·
Does a Resistor Affect Current in a Circuit?
- lha08
- · Replies 1 ·