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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Torque and energy conservation of a yoyo
- scavok
- · Replies 3 ·
How much heat is converted into work?
- iceT
- · Replies 2 ·
The Linear Momentum of a System of Particles
- adp5025
- · Replies 3 ·
How Is the Minimum Radius at Point B Calculated for Rollercoaster Safety?
- d0rk
- · Replies 15 ·
Mechanics ( one easy Questionw hich i cant solve ) A-Levels Sylabbus
- Szeki
- · Replies 1 ·
Rigid Objects in Equilibrium and Center of Gravity
- helen3743
- · Replies 3 ·
Need help with explaining surface tension
- airforce840
- · Replies 2 ·
Pressure of balls bouncing on area
- LoN
- · Replies 4 ·
The Nature of Vectors: Understanding Displacement, Position, and Velocity
- rosable
- · Replies 4 ·
Wavelength of "Whip" CB Antenna on Car
- endeavor
- · Replies 1 ·
Merry-go-round angular momentum conservation?
- Jacob87411
- · Replies 7 ·
Constructing an Energy-Collecting Apparatus for Physics Experiment
- dragos
- · Replies 3 ·
How Do You Calculate the Average Power Developed by a Car Engine on a Hill?
- Szeki
- · Replies 1 ·
E-field of an ununiformly-charged rod
- nahya
- · Replies 3 ·
What is the final speed of a proton in an electric field after traveling 2.0 mm?
- spoonthrower
- · Replies 5 ·
How Do You Calculate Molecules Per Unit Volume from Pressure and Temperature?
- MetalCut
- · Replies 8 ·
Shape factor for falling baking cups from drag equation
- albaboi123
- · Replies 1 ·
How to find decceleration of the car
- vastandfurious
- · Replies 1 ·
Find current for circuit with capacitor, resistor, capacitor in series
- Cyrus
- · Replies 2 ·
Swinging Pendulum and Conservation of Energy
- Axelerator
- · Replies 23 ·
Calculating Hot and Cold Water Mass for Temperature Equilibrium
- MetalCut
- · Replies 6 ·
Why does setting V = 0 at infinity give -E(infinity) = (Ke)q / rB?
- daletaylor
- · Replies 10 ·
How Long Does It Take to Fill a Tub Using a Hose with Different Diameter Ends?
- Alt+F4
- · Replies 7 ·
How Do You Calculate Angular Acceleration from Car Deceleration?
- chazgurl4life
- · Replies 2 ·
Elastic Collision is outer space
- RedBurns
- · Replies 4 ·
Can someone explain how a magnetic field generates an electric current?
- Serena_Greene
- · Replies 1 ·
Circuit Analysis: Voltage Across Resistor vs. Time
- Cyrus
- · Replies 1 ·
Combining Results and Errors - A Forum Saviour!
- fasterthanjoao
- · Replies 1 ·
Geometrical Optics: Construct Ray Paths for Lens-Mirror System
- Chemist
- · Replies 3 ·
Find R: Internal Resistance Equation
- heelp
- · Replies 2 ·
How Do You Calculate a Bird's Average Acceleration?
- christinaa_s
- · Replies 1 ·
Zero Potential In Uniform Electric Field
- daletaylor
- · Replies 3 ·
Finding the acceleration of an object w/ kinematic equations
- oooo
- · Replies 3 ·
Calculate the moment of inertia of the system
- kellyneedshelp
- · Replies 8 ·
Kinetic energy of system: practice exam problem 21
- Alt+F4
- · Replies 53 ·
Why does the potential drop in this case?
- rachael
- · Replies 2 ·
Why does all potential drop across the resistor in Kirchhoff's loop law?
- G01
- · Replies 1 ·
How Much Force is Exerted During a Push-Up?
- digit55
- · Replies 1 ·
Single slit diffraction with 546nm green light
- tgoot84
- · Replies 1 ·
How Is Force Calculated on Turbine Blades by Water Impact?
- smbascug
- · Replies 1 ·
Will Latex make a comeback someday?
- nahya
- · Replies 4 ·
How to calculate forces in a looping
- m0nki
- · Replies 2 ·
Problem about conservation of energy
- physstudent1
- · Replies 3 ·
Calculating the distance of a sliding block
- scryedzxp
- · Replies 7 ·
How can a curveball curve without the Magnus effect?
- physicsgrade11
- · Replies 2 ·
Rolling, Torque, and Angular Momentum of Earth
- mb85
- · Replies 2 ·
Mirror Equations: Derivation of Newtonian Form
- Zeros
- · Replies 4 ·
Work and power problems: motor, microwave, copper heating, pushing a crate
- physicskillsme
- · Replies 8 ·
Help with Steps 1 & 2 of Math Problem
- Lisa...
- · Replies 4 ·
How can I find the mechanical advantage of this pulley system?
- probphy
- · Replies 13 ·
Finding the Moment of Inertia of a System
- Jacob87411
- · Replies 3 ·
Why is my torque calculation incorrect for this simple force problem?
- VinnyCee
- · Replies 2 ·
How Long Does It Take for a Grinding Wheel to Reach Its Final Speed?
- Jacob87411
- · Replies 1 ·
How Does Charge Affect Spring Compression in a Frictionless System?
- velvetchere
- · Replies 4 ·
Why did my RC capacitor only charge to 4.51V from a 5V source?
- Cyrus
- · Replies 11 ·
Calculate a: Dist. b/w Lens Positions for 40 cm Object-Image Distance
- matt85
- · Replies 2 ·
Finding Electric Field at Rectangle Center: A Problem
- spoonthrower
- · Replies 1 ·
Making insulator that keeps water at the same temperature
- CityNoise
- · Replies 5 ·
Finding mass ratio for blocks connected by pulley over inclined plane
- pcmarine
- · Replies 5 ·
Can You Solve These College Physics Problems on Energy and Momentum?
- Classy Jack
- · Replies 14 ·
Calculating Time for Immersion Heater to Raise Water Temperature
- physicskillsme
- · Replies 5 ·
Magnetism, induction and forces on charged particles
- dnt
- · Replies 10 ·
How is luminous flux defined and how does it relate to the unit lumen?
- sapta
- · Replies 6 ·
How do I resolve the moments into vectors and forces?
- VinnyCee
- · Replies 9 ·
How Does Energy Transfer Occur Between Ice and Steam?
- danago
- · Replies 4 ·
Angular speed of rotation problem
- kellyneedshelp
- · Replies 6 ·
NOt sure what stage I'm suppose to look at this circuit, finding RC
- mr_coffee
- · Replies 8 ·
How Much Power Does a Climbing Person Develop?
- petuniac
- · Replies 1 ·
Work done pushing a crate up a 30° ramp at constant speed
- virtuoso_735
- · Replies 12 ·
Some misunderstanding i've about waves
- kevin86
- · Replies 1 ·
Moments: Problem with question itself
- GregA
- · Replies 3 ·
English System Units and R value
- topsquark
- · Replies 4 ·
Hydrogen photon energies, orbital angular momentum, and photoelectric effect
- aytida88
- · Replies 1 ·
Force Applied by 0.145kg Baseball to Catcher's Mitt
- smbascug
- · Replies 2 ·
How Do I Report an Error of 119.45 to One Significant Digit?
- _BaBy_PhAt_
- · Replies 2 ·
Coulomb's Law and insulating fiber
- nahya
- · Replies 2 ·
X-Ray photon/wavelength question
- Moomba44
- · Replies 10 ·
RL circuit fun am I drawing this circuit correct at different times?
- mr_coffee
- · Replies 5 ·
Calculating Change in Kinetic Energy After Mass Separation
- Drevin
- · Replies 7 ·
Calculating Work Done: A Physics Question for All Levels
- Geographer
- · Replies 2 ·
Two Power / Work / Energy Questions
- JayDub
- · Replies 3 ·
Centripetal Acceleration of roller-caster vechicle
- dontcare
- · Replies 2 ·
Calculating Lead Shielding Thickness for Radioactive Sample Transport
- habman_6
- · Replies 2 ·
Why is Infrared Radiation the Most Effective for Thermal Effects?
- PPonte
- · Replies 6 ·
How Do You Calculate Momentum for a Falling Dancer and a Space Probe?
- virtuoso_735
- · Replies 4 ·
Force = mass x acceleration and related subject
- magic_ghost
- · Replies 4 ·
Understanding Differential Angular Speeds in Wheel and Axle Systems
- kellyneedshelp
- · Replies 6 ·
How Does Centripetal Force Affect Roller Coaster Dynamics?
- dontcare
- · Replies 1 ·
What did i do wrong? Am i on the right track?
- danago
- · Replies 5 ·
Cherry blossom fall height, Earth's circumference, and orbital mechanics
- jacksthomas44
- · Replies 3 ·
Calculating Final Temperature of Mixtures
- danago
- · Replies 2 ·
Average force and a ball of mass
- RedBurns
- · Replies 9 ·
Snell's Law and the Refraction of Light
- BoogieL80
- · Replies 3 ·
Calculating force on a string and harmonics, something doesnt add up
- haki
- · Replies 2 ·
Calculating Final Velocity After Inelastic Collision: Car vs Van
- superdave
- · Replies 7 ·
Finding the wave length of glass, plug and chug but messing up somewhere
- mr_coffee
- · Replies 7 ·
How to Calculate Horsepower and Torque for a Gear Motor Winch?
- D Hook
- · Replies 5 ·
Find Value of 2nd Capacitor in Series w/ Known 1st
- dan greig
- · Replies 2 ·
What is the change in momentum?
- superdave
- · Replies 3 ·