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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Kinematics in 1 Dimension: Solving Basic Problems
- future_vet
- · Replies 15 ·
Is Average Velocity Equal to Instantaneous Velocity for Constant Motion?
- future_vet
- · Replies 3 ·
Forces & Friction: Block Sliding Down Incline
- JasonAdams
- · Replies 5 ·
Understanding the Role of c1c2 and 2b in the Energy in Accident Equation
- Probie
- · Replies 4 ·
Is the Velocity of Water at the Top of a Glass Really Zero?
- Gyroscope
- · Replies 3 ·
Help with projectile motion-type question
- aisha001
- · Replies 2 ·
Conservative and non-conservative forces
- JasonAdams
- · Replies 7 ·
How Does Angular Velocity Change in a Swinging Rod with Masses?
- dkgojackets
- · Replies 1 ·
Understanding the Isobaric Cooling of Air and its Effects on Dew Point
- dobry_den
- · Replies 1 ·
Fluid Dynamics Homework: Reservoir Connection and Bernoulli's Principle
- Gyroscope
- · Replies 6 ·
Two tuning forks are producing sounds of wavelength
- merlos
- · Replies 3 ·
Help Christoph: Solve the Photon Scattering Problem
- Khasimir
- · Replies 1 ·
Power consumed by heaters connected in series
- dmolson
- · Replies 1 ·
How to Solve Vertical Acceleration Problems
- Iceclover
- · Replies 2 ·
Electric Field due to Line of Charge
- cd80187
- · Replies 3 ·
Understanding Standing Waves: Open & Closed End Formations
- JasonAdams
- · Replies 1 ·
Solve Physics Problem: Ball Thrown Vertically Upward
- FlashMXHelp
- · Replies 6 ·
Force, Electric Field, and Positive Particle
- Soaring Crane
- · Replies 1 ·
Find the Potential as a function of position
- prace
- · Replies 1 ·
Mass of solid water and gaseous water?
- tacloban87
- · Replies 1 ·
Solving Matter & Antimatter Problems: Need Help Getting Started?
- kingwinner
- · Replies 14 ·
Need an idea for COURSEWORK research project
- blackcat
- · Replies 5 ·
Introductory Physics Learning Sources. Reliable?
- AznBoi
- · Replies 1 ·
Electric Field of a Charged Spherical shell
- SamTsui86
- · Replies 3 ·
Electric Field and total energy
- SamTsui86
- · Replies 3 ·
Solving Current: Copper Cylinder Density & Electron Count
- sbp_387
- · Replies 1 ·
Power Dissipation: Calculate Total Power
- suspenc3
- · Replies 1 ·
Find Thevenin Equiv. at a-b for Transistor Model
- VinnyCee
- · Replies 13 ·
Solving for the Third Force in a Simple Physics Problem with Constant Velocity
- Rasine
- · Replies 5 ·
Flash of a laser moves a mirror hanging on a rope
- caspar
- · Replies 10 ·
How Can Cos(x) Be Expressed Using Tan(x)?
- 06Sport
- · Replies 20 ·
Rotational motion of pulleys influenced by gravity. Not sure how to set up.
- shanest
- · Replies 3 ·
Electric Field of Earth problem
- stylez03
- · Replies 20 ·
Solving Force of Tension in Tightrope
- dcgirl16
- · Replies 1 ·
How Do You Calculate the Depth of an Object Using Sonar Echoes?
- akd28
- · Replies 2 ·
How Do You Calculate the Electric Field at the Midpoint of a Triangle's Side?
- map7s
- · Replies 1 ·
On error analysis of my practical
- Delzac
- · Replies 1 ·
Electrostatic/gravitational force q
- debwaldy
- · Replies 2 ·
Linear Expansion of Solid problem
- toddler
- · Replies 3 ·
Derivation of Moment of Inertia Equation for Solid Discs
- kelli105
- · Replies 2 ·
Rod in rotational motion. Not sure how to account for potential energy.
- shanest
- · Replies 2 ·
Angular speed and revolutions question.
- shanest
- · Replies 1 ·
How Do I Calculate Equivalent Resistance in Complex Circuits?
- Decan
- · Replies 2 ·
Finding velocity in terms of variables
- stinlin
- · Replies 1 ·
Snell's Law HELP TEST TOMMOROW
- bflatt
- · Replies 2 ·
How Far Must a Proton Be from a Charge to Balance Its Weight?
- map7s
- · Replies 13 ·
Differentiating Lorentz factor with respect to time
- anantchowdhary
- · Replies 2 ·
Understanding the Process: Jump Starting a Car Battery in Series or Parallel"
- pivoxa15
- · Replies 32 ·
Finding Equilibrium Position for Third Charge in Line of Point Charges
- map7s
- · Replies 2 ·
Calculating Jet-Missile Catchup Time
- ramman1505
- · Replies 1 ·
A duck, some Newtons, and other fun stuff
- CelesteSeven
- · Replies 3 ·
Angular Momentum and velocity problem
- konichiwa2x
- · Replies 6 ·
Solving a Car's Acceleration in a Quarter Turn
- Northstar
- · Replies 2 ·
Kinematics: finding acceleration
- kapatter
- · Replies 2 ·
Work and Force on a block of mass
- chamonix
- · Replies 2 ·
Calculate absolute value of A+B
- tnhoots
- · Replies 14 ·
Maximum KE, Compton Scattering
- mrjeffy321
- · Replies 1 ·
Physical Chemistry 2 - Work function - HELP NEEDED
- gunner05
- · Replies 4 ·
Need HELP equation of motion with variable acceleration
- Behroz
- · Replies 3 ·
Gravitational Energy Homework: How High Does it Go?
- fsm
- · Replies 9 ·
Gravity and Height: Find the Height of a Physics Problem
- NIZBIT
- · Replies 2 ·
What Is the Net Electric Field at the Midpoint Between Two Charged Particles?
- threewingedfury
- · Replies 4 ·
How Does Current Flow Affect Entropy in a Resistor and the Universe?
- Brewer
- · Replies 1 ·
Finding the Lagrangian for a Two-Mass System Connected by a String
- HalfManHalfAmazing
- · Replies 9 ·
Understanding the Direction of Beam Tilt After Release
- Parallel
- · Replies 12 ·
Calculating Vectors: Displacement, Radius & Skating Distance
- tnhoots
- · Replies 3 ·
R Physics Help: Slippery Safe Problem Solution and Explanation
- denverdoc
- · Replies 16 ·
Fundamental question unable to find answer
- cjf
- · Replies 4 ·
Cosmology Questions: Answers to Help You Pass Exam
- Olivia Grace
- · Replies 10 ·
Ideal gas law + Newton's 2nd law problem
- cy19861126
- · Replies 18 ·
How to Calculate the Speed of a Pendulum Using Tension and Weight
- daniellelok
- · Replies 13 ·
Converting Between Component and Magnitude-Angle Notations
- Llama77
- · Replies 3 ·
Solving for Coefficient of Kinetic Friction in Physics: Fnet=ma
- badatphysics
- · Replies 2 ·
What is the force exerted by the water on the bottom of the tank?
- kingwinner
- · Replies 13 ·
Are My Electric Potential Answers Correct for These 7 Cases?
- gazepdapi1
- · Replies 3 ·
What is the angle of a hanging dice during acceleration?
- bpw91284
- · Replies 3 ·
Significant Figures in Conversions: How to Apply the Rule in Physics?
- future_vet
- · Replies 4 ·
Parallel and perpendicular force
- inner08
- · Replies 14 ·
How Much Energy Is Needed to Convert 500 g of Water at 20°C to Steam at 100°C?
- hackz
- · Replies 1 ·
Another Two-dimensional Dynamics Problem
- mst3kjunkie
- · Replies 4 ·
Safe Parking on Icy Days: Calculating Friction
- bpw91284
- · Replies 2 ·
Electric potential energy and point charges problem
- abeltyukov
- · Replies 1 ·
Dimensional Analysis of an object
- future_vet
- · Replies 2 ·
Help Needed: Calculating Mass/Charge Ratio & Carbon Atom Count
- physics.student
- · Replies 1 ·
How High is the Hedge in the Skier's Path?
- samdiah
- · Replies 23 ·
Exam Questions: Solving for Pressure, Force, and Density
- RaidersFan
- · Replies 1 ·
Calculating Force for a Bobsled on an Incline | Physics Homework Problem
- bpw91284
- · Replies 1 ·
Calculate the acceleration of the elevator
- bpw91284
- · Replies 1 ·
Calculating the electric field
- symmet
- · Replies 2 ·
I Have an Exam Tomorrow and I so here are some question
- RaidersFan
- · Replies 1 ·
Movement of Charged Particles in a field
- Karma
- · Replies 3 ·
What is the Principle of Least Action?
- HalfManHalfAmazing
- · Replies 2 ·
Solving Force and Kinematics: Braking Distance of a 760kg Car
- rudebwoi
- · Replies 6 ·
Free Falling Object's Initial Height
- darkmagicianoc
- · Replies 11 ·
Work Energy Concept Homework: Solving Statement
- fffff
- · Replies 9 ·
Ke/pe Vehicle Help: Create 5m Distance w/o Chemicals
- sarahchika05
- · Replies 1 ·
What net external force is requiered?
- metalx1000
- · Replies 2 ·
Why Are Two Masses with Same Weight but Different Brackets Not in Equilibrium?
- pmago
- · Replies 1 ·
How Is Capacitance Calculated in a Charged Parallel-Plate Capacitor?
- crossfacer
- · Replies 2 ·