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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Optics - Focal length question
- Lux0r
- · Replies 1 ·
Solving Freight Car's Initial Speed: Hooke's Law & Friction
- alvarez91
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Calculating the number of atoms in X Kilograms of iron
- Sun44
- · Replies 3 ·
What Happens to Billiards Balls in an Elastic Collision at Right Angles?
- mitchmcsscm94
- · Replies 3 ·
Find the gravitational force of the sun on Mercury
- chris_0101
- · Replies 1 ·
Conservation of Energy + Hooke's Law
- QuarkCharmer
- · Replies 15 ·
Using conservation of energy to find spring constant but off number
- slambert56
- · Replies 1 ·
Help needed working out a zener diode circuit's total Voltage
- Eisen
- · Replies 4 ·
In this vector problem, what would theta equal?
- Snape1830
- · Replies 2 ·
The maximum speed you can walk on the Mars
- lengleng
- · Replies 3 ·
Potential energy particle problem
- Hiche
- · Replies 1 ·
Working out the impedance of a network query
- lubo
- · Replies 1 ·
How to Calculate g with Known Pendulum Length and Negligible Amplitude?
- Bibigul
- · Replies 3 ·
Angular momentum and change in velocity
- physgrl
- · Replies 3 ·
Determing components of a projectile from ferquency
- centripitacal
- · Replies 1 ·
Bungee Jump Physics: Solving for Maximum Fall Length and Spring Constant
- ScienceMan123
- · Replies 1 ·
Calculating Electric Field Zero Point for Negative Point Charges
- Dayton
- · Replies 7 ·
How to Find Angular Momentum from Time-Dependent Torque?
- Calam1tous
- · Replies 4 ·
Calculating Voltage Across a Capacitor
- roam
- · Replies 1 ·
Buoyant force same for all object of same volume?
- david13579
- · Replies 4 ·
Does Resultant Force Directly Influence Direction in Linear Motion?
- Miike012
- · Replies 4 ·
Acceleration of Slab and Block: 58N Force
- tebes
- · Replies 2 ·
Rotating Polarizer 90 Degrees With Only 10 Percent Loss
- JSGandora
- · Replies 1 ·
What is RMS Power? Understanding Its Meaning and Importance in AC Circuits
- songoku
- · Replies 10 ·
Conservation of momentum after a collision
- ex81
- · Replies 15 ·
Static friction and kinetic friction, solve for acceleration and force.
- tebes
- · Replies 6 ·
Specific heat and heat of fusion lab questions
- lilmulli14
- · Replies 1 ·
Help understanding centrefugal force
- Liquidxlax
- · Replies 1 ·
Newton's Three Law's on Cars, Bicycles, Objects
- Becca93
- · Replies 3 ·
Problem involving hookes law and friction
- guitarist2400
- · Replies 1 ·
Why Is the 0.7 Volts Diode Drop Used in Calculating R2 Current?
- Eisen
- · Replies 6 ·
Help : Perpendicular distance of the plane
- ahgang
- · Replies 4 ·
Calculating Work and Distance for a Braking Automobile
- grade 11 kid
- · Replies 1 ·
Circular Motion - Spacecraft in Orbit
- Becca93
- · Replies 2 ·
Non-Uniform Circular Motion: Locomotive Rounding a Curve
- Becca93
- · Replies 4 ·
Designing a Box to Catch an Unadulterated Egg at 18ft
- WritingLove
- · Replies 9 ·
Relative length and velocities using Lorentz transformations
- clayton26
- · Replies 1 ·
Tension in an Accelerated System
- whoareyou
- · Replies 1 ·
Calculating Force Needed to Lift Lid in Denver
- lalahelp
- · Replies 5 ·
How Do You Normalize the Wavefunction ψ=Ae^(-λχ)e^(-iδt)?
- baldywaldy
- · Replies 1 ·
Finding Speed of a Mass in a Frictionless System at a Specific Time
- Becca93
- · Replies 12 ·
Bicyclist coasting down hill (Newton's Laws)
- ndifabio
- · Replies 4 ·
How Does f-Number Influence Depth of Field in Photography?
- JSGandora
- · Replies 4 ·
This is more a of a theory question of the atwood and energy
- flyingpig
- · Replies 8 ·
P-n junction & transistors: depletion zone
- sparkle123
- · Replies 11 ·
Kinetic Energy and Work energy theorem
- jasonbans
- · Replies 10 ·
Calculating the Change in Mechanical Energy of a Car-Truck Collision
- lefthand
- · Replies 5 ·
Difference between mass and volume
- logearav
- · Replies 2 ·
Why is There Acceleration Despite Newton's Third Law of Motion?
- AllenHe
- · Replies 5 ·
U Physics 12E 7.71 Conservation of Energy: An experimental apparatus with mass
- NamaeKana
- · Replies 1 ·
Finding Tension in a Pulley System
- Becca93
- · Replies 2 ·
Conservation of Momentum in an Inelastic Collision
- tseryan
- · Replies 26 ·
Electric field, solid sphere inside hollow sphere
- Eastonc2
- · Replies 1 ·
Angular change in velocity (momentum)
- physgrl
- · Replies 4 ·
Can angles be negative in coordinate geometry?
- Tearsandrille
- · Replies 5 ·
Comparing Potentials of Multiple Charges at Varying Distances from the Origin
- wolski888
- · Replies 6 ·
Calculating Mass from Centripetal Force Slope
- bbeaver
- · Replies 4 ·
Why Are High Energies Needed to Break Particles and Observe Fine Structure?
- jsmith613
- · Replies 2 ·
Calculating Velocity and Distance for a Coupled Spring-Mass System
- najd
- · Replies 1 ·
Conservation of Angular Momentum of Cart Problem
- carhartt
- · Replies 2 ·
Two blocks, a pulley, and an inclined plane.
- tharock220
- · Replies 2 ·
How Does Phasor Addition Simplify Trigonometric Expressions?
- smallwa
- · Replies 3 ·
Radiation heat exchange between two surfaces.
- goldark
- · Replies 1 ·
Accelerating Blocks: Calculating Frictional Force
- iluvcanucksfo
- · Replies 1 ·
Calculating Water Flow Duration in Cylinder Reservoir
- Pzi
- · Replies 3 ·
How Do Kirchhoff's Rules Determine Currents in a Dual Battery Circuit?
- roam
- · Replies 16 ·
The Inequality for e in Newton's Law of Restitution Collision?
- FeDeX_LaTeX
- · Replies 1 ·
How Do You Calculate the Correct Spring Constant for Stopping a Car?
- csgirl504
- · Replies 10 ·
Why doesn't a velocity vs time graph always pass through the origin?
- DB
- · Replies 5 ·
Acceleration of a Rolling Cylinder
- Megzzy
- · Replies 18 ·
Trouble understanding Symmetries
- dako7
- · Replies 1 ·
Energy Cost of Stair Climbing for Average-Sized Individuals
- kthejohnster
- · Replies 1 ·
Can a Pedestrian Running at 6 m/s Catch a Bus Accelerating from a Stop?
- IQmissing
- · Replies 10 ·
A circulating charged particle under a magnetic field
- eurekameh
- · Replies 2 ·
How Long Does It Take for an Electron to Travel Through a Silicon Block?
- loganblacke
- · Replies 1 ·
Car travelling around a banked corner with friction
- ineedhelp1234
- · Replies 6 ·
A mass hung from two attached springs
- shawli
- · Replies 2 ·
Calculate Change in Velocity of Flatcar When Man Runs Opposite Direction
- DavidAp
- · Replies 1 ·
Can you guys help check my answers? - balanced force
- xPiiNK
- · Replies 1 ·
Phase difference between the two waves
- Sloan650
- · Replies 1 ·
Using Optics To Make An Aircraft Invisible
- baltimorebest
- · Replies 2 ·
Finding constant velocity,final velocity and acceleration of these cars?
- xod_s
- · Replies 3 ·
Problem concerning Pilot find true weights
- dgibbs
- · Replies 8 ·
What is the angle between these two vectors?
- IDKFysics
- · Replies 1 ·
Traversing a Circular Arc: Solving for Time with Maximum Acceleration
- g.licata
- · Replies 6 ·
P-State Lightwave: Angular Frequency & Amplitude
- cuti_pie75
- · Replies 3 ·
What Are Three Cable-Free Long Range Communication Methods?
- iKyleee
- · Replies 13 ·
Angle for a banked curve (friction-less surface)
- physgrl
- · Replies 12 ·
Principle of triangle of forces
- verb tense
- · Replies 1 ·
Question about momentum depending if the collision is elastic or not?
- nukeman
- · Replies 2 ·
Simple gravitational attraction forces problem
- kirby27
- · Replies 8 ·
What is the required deceleration to stop a car in a given distance and time?
- sawtooth500
- · Replies 7 ·
1) A rope 5m is fastened to two hooks 4m apart on a horizontal
- verb tense
- · Replies 4 ·
Calculate J Notation Impedance of Network w/ Capacitor & Inductor
- lubo
- · Replies 1 ·
Help with Homework Statement 1b: Elasticity & Pressure
- Vexysery
- · Replies 6 ·
How to Find g from the Gradient of a Distance-Time Graph?
- jendrix
- · Replies 2 ·
Calculating Magnetic Field at a Point Using Biot-Savart Law
- Eva01
- · Replies 2 ·
Centripetal Force with angle problem
- taxidriverhk
- · Replies 1 ·
Slightly confused regarding centripetal force, radius and frequency
- chris_0101
- · Replies 3 ·
How Do You Sketch a Velocity-Time Graph for Constant Velocity and Acceleration?
- iamBevan
- · Replies 5 ·