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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Rolling motion of a cylinder down an incline
- mlostrac
- · Replies 5 ·
Diffraction Grating and Intensity
- silence98
- · Replies 4 ·
Momentum of two balls collision question
- mvk1
- · Replies 2 ·
Finding currents with Kirchhoff's rules in a three-loop circuit
- GlobalDuty
- · Replies 2 ·
Angular Deceleration of Flywheel due to Rotation Motion
- thereddevils
- · Replies 7 ·
How Far is the Dog from Shore After Walking the Length of the Boat?
- roam
- · Replies 4 ·
Rock Concert vs Whisper: Intensity Factor of 22026.4
- roam
- · Replies 1 ·
How Do Two Superposed Waves Result in Points of Zero Displacement?
- socoil23
- · Replies 2 ·
Collision in Midair: Find Speed After Impact
- roam
- · Replies 3 ·
Two blocks with equal momenta colliding via a spring
- box17
- · Replies 1 ·
How Is Force Calculated When Momentum Change Appears Zero?
- roam
- · Replies 6 ·
Checking answers on 10 capacitor multiple choice problems
- r3dxP
- · Replies 6 ·
Calculating Minimum Energy for Relativistic Collision of Proton and Photon
- joriarty
- · Replies 1 ·
Heat transfer through a steel rod
- xortan
- · Replies 2 ·
Finding vector components of two forces at 45 degrees
- physics(L)10
- · Replies 9 ·
Hydrogen Spectrum: Blue Line w/ 434nm Wavelength
- Cudi1
- · Replies 1 ·
Heat exchanger output temperature calculation
- hamish888
- · Replies 1 ·
Simple Harmonic Motion of a table
- roam
- · Replies 12 ·
Finding wavelength of hydrogen atom when changing energy states
- kavamo
- · Replies 9 ·
How to Calculate Normal Force in a Rotating Environment?
- rtllz
- · Replies 1 ·
Calculating Force: Swimming Pool Problem
- ernay
- · Replies 1 ·
The minimum number of photons per second?
- girlygirl55
- · Replies 1 ·
Finding the distance, once you have acceleration and time
- christinaa_s
- · Replies 10 ·
Kinematics Water shooting out of hose
- hanlon
- · Replies 2 ·
Why Does the Milk Jug Stay Put When the Paper is Pulled?
- GreatEscapist
- · Replies 3 ·
Solving Atwood's Pulley Homework Equations
- mlostrac
- · Replies 9 ·
How Do Point Charges Affect Electric Field Vectors at a Specific Location?
- sami23
- · Replies 3 ·
What is the velocity, speed, position and distance traveled after 30 minutes?
- physics(L)10
- · Replies 35 ·
A Carnot engine. Got right answers, but I have questions on solution.
- frozenguy
- · Replies 7 ·
What is the power required for the belt to maintain its velocity
- Rasmus10
- · Replies 1 ·
Acceleration at the bottom of a bungee jump
- ff93
- · Replies 10 ·
Three point charges in an equilateral triangle
- Mugwump101
- · Replies 2 ·
How to Set Up Algebraic Expressions for Car Travel Problems?
- fatuma205
- · Replies 2 ·
Solid insultaing sphere electric field
- odyssey4001
- · Replies 1 ·
Deriving momentum transfer in elastic collisions between two particles
- subho123
- · Replies 3 ·
Three balls on a smooth surface connected by strings
- Nanyang
- · Replies 18 ·
Simple Coefficient of Friction Question
- ahsanxr
- · Replies 6 ·
Finding the Maximum Compression Distance of a Spring: A Physics Problem
- roam
- · Replies 3 ·
Calculating air resistance on air
- E.L
- · Replies 1 ·
Electron Uniform Field Question
- MisterMan
- · Replies 4 ·
How Do You Calculate Angular Momentum for a Ball on a String?
- gongshow29
- · Replies 1 ·
Familiar? But confirmed correct one
- CartoonKid
- · Replies 6 ·
Electric Potential Vs. Electric Field
- pwkellysr
- · Replies 2 ·
Planetary Motion, calculation of orbital period
- Stevo_evo_22
- · Replies 2 ·
Solving a differential equation in classical mechanics
- Shing
- · Replies 15 ·
Calculating Aircraft Physics for a Simulation Game
- boks
- · Replies 1 ·
Physics Concepts in the Pendulum Practical
- lucylouisa
- · Replies 1 ·
What is the final temperature of ethanol after thermal equilibrium is reached?
- pat666
- · Replies 2 ·
Angular separation between two wavelengths
- socoil23
- · Replies 3 ·
How is Work Calculated for Pulling Up a Curtain?
- Uku
- · Replies 2 ·
Why are tides similar on both sides of Earth despite centrifugal force?
- ponjavic
- · Replies 7 ·
How Do You Calculate the Average Power of a Car in Physics?
- thereddevils
- · Replies 3 ·
Electrostatic potential and velocity
- ryukyu
- · Replies 2 ·
What is the Potential Energy of Charge A in a Finite Grid of Alternate Charges?
- Redsummers
- · Replies 2 ·
Pile driver force: finding average force from kinetic energy
- urgent
- · Replies 5 ·
Free body diagram for charged particle between electric plates
- evilgino
- · Replies 8 ·
Position of image of an immersed object
- nilic1
- · Replies 2 ·
Electric potential on circle problem
- physicsjock
- · Replies 19 ·
What is the Angular Velocity of an Arm at 45 Degrees?
- TheNextOne21
- · Replies 1 ·
Will Vehicle One and Vehicle Two Collide?
- mickellowery
- · Replies 1 ·
UBER EASY QUESTION: just need to make sure.
- pfssassin
- · Replies 2 ·
How to work out mechanical energy used to stroke a key on a keyboard
- knatedogg86
- · Replies 16 ·
How to calculate the energy of playing See Saw
- 92sergey
- · Replies 1 ·
Simple mutiplication vector problem
- physixfail
- · Replies 1 ·
How to Calculate Bearing and Pitch to Hit a Moving Target with a Cannon?
- joninty
- · Replies 8 ·
What is the Centripetal Acceleration at Earth's Equator?
- kevin heck
- · Replies 20 ·
Atwood machine, solve for angular acceleration
- aznboi855
- · Replies 5 ·
How Far Does a Pion Travel in the Lab Frame?
- kavamo
- · Replies 6 ·
Determine the magnitude and direction of the total force on the wire.
- q8kd
- · Replies 2 ·
How to visualize a potential difference?
- MCATPhys
- · Replies 6 ·
Calculating Total Energy in Simple Harmonic Motion
- Lavace
- · Replies 3 ·
How Does Buoyancy Affect Object Stability in Water?
- panther2041
- · Replies 6 ·
Conceptual momentum and work questions
- physicskid72
- · Replies 2 ·
Can Physics Principles Prove Innocence in Court?
- bcjochim07
- · Replies 5 ·
Uncertainty principle - just want to check my method
- quantumlolz
- · Replies 1 ·
What is the Voltage Across the Capacitor in an RLC Circuit with Zero Inductance?
- xswtxoj
- · Replies 1 ·
Ampere's law for a closed ring bar magnet
- quantumlolz
- · Replies 1 ·
Circuit Diagrams w/o Resistance
- moshrom
- · Replies 14 ·
Do I have to break these problems up into component vectors?
- jefgreen
- · Replies 5 ·
How to Calculate Average Net Force on a Truck with Changing Velocity
- Kimorto
- · Replies 5 ·
Why Does a Long-Barrel Cannon Make a Cannonball Travel Faster?
- GreatEscapist
- · Replies 2 ·
Rotational Energy and Kinetic Energy
- madhuparc2004
- · Replies 3 ·
Minimum energy uncertainty from lifetime using uncertainty principle
- SAT2400
- · Replies 6 ·
Solving LASER Problems with Energy Differences and Wavelength Calculations
- SAT2400
- · Replies 6 ·
Moment of Inertia of a Trebechet
- TheNextOne21
- · Replies 1 ·
What is the Correct Rule for Voltage in a Parallel Circuit?
- Daniiel
- · Replies 8 ·
Half-life of 90Sr: how long until 7/8 of sample decays?
- furface
- · Replies 5 ·
What is the sound intensity level of a jet at 1000 feet?
- phytitan
- · Replies 3 ·
Rotational Mechanics and Torque With Relation to planes?
- YodaSan2
- · Replies 1 ·
How Do You Calculate Tension in a Cantilever Cable System?
- slain4ever
- · Replies 1 ·
Fourier B-coefficients for a tricky f(x)
- blaksheep423
- · Replies 1 ·
Equipotentials around a charge Q
- ghostbuster25
- · Replies 1 ·
Potential Energy between two protons?
- MCATPhys
- · Replies 12 ·
Finding real examples of strain energy converting to gravitational PE
- yeah:)
- · Replies 2 ·
Cork: Solving for the Height of a Cork in a Dropped Bucket of Water
- GeneralShamu
- · Replies 1 ·
What is the threshold wavelength for this surface?
- kavamo
- · Replies 2 ·
Gauss's Law and Superposition of Fields
- gadje
- · Replies 2 ·
Phase of particles on a stationary wave
- DarkStalker
- · Replies 1 ·
O Physics: K Meson Decay and Velocity Calculation
- bon
- · Replies 1 ·
Why does an angled pencil in water appear bent and the same length?
- nilic1
- · Replies 2 ·