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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Derivation of the Kinematic Equations
- alexgraham
- · Replies 11 ·
Proving Conservation of Momentum
- WillTheBassis
- · Replies 1 ·
Special relativity abduction from earth question
- xma123
- · Replies 1 ·
The lowest pressure on the balloon
- Phatossi
- · Replies 2 ·
Temperature coefficient of resistance calculation
- Preksha
- · Replies 8 ·
Speed dropping to zero when landing during a fall
- sgstudent
- · Replies 9 ·
What is the force of the spring constant?
- tgould43
- · Replies 3 ·
Calculating Rafter Size for Douglas Fir-Larch
- raiderUM
- · Replies 5 ·
How does electrostatic spray painting work?
- diudiu
- · Replies 3 ·
What distance does a canoe move when a woman walks across it?
- anthonych414
- · Replies 3 ·
Newton's third law when moving our body
- sgstudent
- · Replies 14 ·
What Is the Angular Velocity of a Spinning Disk?
- SalsaOnMyTaco
- · Replies 6 ·
Find the total displacement on a velocity-time graph
- freefalling
- · Replies 12 ·
What is the Tension in a Rotating String?
- Rohaaan
- · Replies 4 ·
Tarzan Physics Question with Kinematics, Energy, Forces
- sangdeep
- · Replies 1 ·
Bifilar Pendulum: Can't justify/create a hypothesis + analyze results
- lavenders2
- · Replies 3 ·
Static Equilibrium Door Problem
- elianaphys
- · Replies 3 ·
Rotational Motion- Parallel Axis Theorem?
- elianaphys
- · Replies 1 ·
Converting between scientific & regular notation, without changing sig. figs.?
- rishay95
- · Replies 3 ·
Parallel plate conductors question
- newageanubis
- · Replies 1 ·
Calculating Power of Outdoor Heater: A Puzzling Problem
- varyvod001
- · Replies 5 ·
An alpha particle is fired at a uranium atom
- newageanubis
- · Replies 3 ·
Solving Ideal Gas Law Problem: Volume of Rigid Container at 1.20 atm and 60.0°C
- BryceHarper
- · Replies 7 ·
Action reaction force quick question
- Adam17
- · Replies 1 ·
Solving for the Mass of M2 in an Equilibrium System?
- izelkay
- · Replies 7 ·
Finding accleration of object after collision
- Adam17
- · Replies 5 ·
Physics Final Exam Sample Question
- zainbo
- · Replies 15 ·
Centroid of a right angle triangle
- D0m
- · Replies 1 ·
Need help on getting the resonant frequency
- xuhhad
- · Replies 3 ·
Mass of used hydrogen in an isothermal process
- Uku
- · Replies 10 ·
Question related to SHM and free body diagrams
- ehabmozart
- · Replies 17 ·
Kinetic Energy Loss of Colliding Billiard Balls
- SalsaOnMyTaco
- · Replies 8 ·
Charge Induction: Understanding Electric Field Effects
- Saitama
- · Replies 20 ·
Real height and apparent height
- jadelamlam
- · Replies 2 ·
How Does Air Resistance Affect Theoretical vs Actual Projectile Range?
- Parkstrailer
- · Replies 5 ·
To find out the compression of the spring
- icecool8
- · Replies 7 ·
Why Doesn't the Water Level Decrease When an Ice Cube Melts?
- Sam2847
- · Replies 3 ·
Refraction - when can you see past the label?
- jadelamlam
- · Replies 6 ·
Mass Hanging in Center of Chain Problem
- rocapp
- · Replies 9 ·
Solving the Simple Harmonic Oscillator Equation of Motion: Tips and Tricks
- phys2
- · Replies 1 ·
Comparing Mechanical Energies of two falling masses
- rustyshackle
- · Replies 5 ·
Finding the magnitude of an electric field with 5 charges.
- Ganar
- · Replies 4 ·
Calculating Pressure Change in Gases: Hand Pump and Container Setup
- curiousjoe94
- · Replies 16 ·
Calculating Acceleration in a Rifle-Bullet System
- Justhelp
- · Replies 16 ·
A.: Finding Center of Mass for a Rectangular Surface with a Hole
- Jalo
- · Replies 1 ·
Velocities after totally elastic collision
- Fun Value
- · Replies 3 ·
Special Relativity and Kinematics Problem
- ToothandnaiL
- · Replies 6 ·
Question About Assignment - accelerations, velocities and distances
- shinnsohai
- · Replies 4 ·
Universal gravitation 11- determine the gravitational force of attraction
- dani123
- · Replies 21 ·
Universal gravitation 5- determine which satellite has smaller period
- dani123
- · Replies 1 ·
Universal gravitation 9- determine the mass of planet Jupiter
- dani123
- · Replies 5 ·
Universal gravitation 8- determine the speed of a satellite
- dani123
- · Replies 2 ·
Universal gravitation 7- determine the gravitational force of attraction
- dani123
- · Replies 2 ·
Universal gravitation 6-determine strength of gravitational field
- dani123
- · Replies 3 ·
Model a rigid body made of two points linked by a rigid bar
- cicciolo
- · Replies 5 ·
What is the Modulus of the Complex Number exp(√i)?
- unscientific
- · Replies 4 ·
Compute the force the a coloumn of water exerts on an object.
- IsomDan
- · Replies 8 ·
Calculate ball velocities after slope bounce
- DrKrunklehorn
- · Replies 1 ·
Year 12: Cambridge Physics Problems (2D kinetic theory)
- johnconnor
- · Replies 6 ·
Variation of Kinetic Energy with temperature
- johnconnor
- · Replies 1 ·
Universal gravitation 3- determine the mass of the Earth
- dani123
- · Replies 1 ·
Expansion and contraction of a gas
- jadelamlam
- · Replies 3 ·
EMF v time graph vs change in flux v time
- alv
- · Replies 3 ·
Problem of torque transmission and determining how to achieve a velocity
- Strontium90
- · Replies 12 ·
Calculating Fission Energy from Uranium Fuel
- ehabmozart
- · Replies 7 ·
Unit Conversion: Astronomical Units, Parsecs and Light Years
- iwantpi
- · Replies 3 ·
Need help with my homework 45minutes left till i have to hand it in
- MBEE
- · Replies 3 ·
How Is Work Calculated in a Friction Scenario with Constant Velocity?
- nbroyle1
- · Replies 7 ·
Complicated path question - 2D vectors
- Kawakaze
- · Replies 2 ·
Topic: Motion Analysis of Passing Cars with Fixed Power and Variable Force
- TszHin
- · Replies 2 ·
Question on spring constant w/potential energy
- yumemirai
- · Replies 2 ·
Help With Calculating Spring Constant and Energy in System
- Ereny
- · Replies 2 ·
Solving a Momentum Conservation Problem
- Ereny
- · Replies 1 ·
DeBroglie matter waves and double-slit
- Darrinr769
- · Replies 1 ·
Calculating the Mass of 100 Trillion Uranium 238 Atoms | Physics Homework
- ehabmozart
- · Replies 1 ·
Does the Spring Continue to Stretch Indefinitely Beyond the Elastic Limit?
- rollcast
- · Replies 3 ·
Calculate F given m, d, and v should be easy.
- TrpnBils
- · Replies 9 ·
Probability of finding particle in 1D finite potential well
- Ryomega
- · Replies 20 ·
Help with Vertical Motion Problem
- theintarnets
- · Replies 8 ·
Calculating Electric Potential in a Uniformly Charged Spherical Shell
- sm09
- · Replies 11 ·
How Do I Calculate the Rebound Heights of a Dropped Golf Ball?
- manal950
- · Replies 2 ·
Magnitude and direction of electric field at point P
- Ryomega
- · Replies 2 ·
Light, Wavelength, Space, and the color of Stars
- Qube
- · Replies 1 ·
Year 12: Cambridge Physics Problem (Gas and Pressure)
- johnconnor
- · Replies 3 ·
How Does Temperature Influence Current Flow in Semiconductors?
- Miike012
- · Replies 1 ·
Finding Total momentum of a system
- mcordi
- · Replies 2 ·
Wave Optics (Interference due to reflection)
- cryora
- · Replies 1 ·
Does Light Reflect at the Boundary Between Water and Flint Glass?
- physicsguy101
- · Replies 2 ·
A 1600 kg object is initially at rest 400 km above the earth’s surface.
- Scarlett
- · Replies 3 ·
Projectile Motion in Combination with Energy Problem
- Bound
- · Replies 1 ·
Calculating half life (Decay Constant)
- franwilder
- · Replies 3 ·
Kinematics/Force help - especially with direction
- xcfzm94
- · Replies 3 ·
Conceptual question concerning work and nonconservative forces
- JYZero
- · Replies 3 ·
Stress & Strain (Finding diameter, extention & thickness)
- D0m
- · Replies 19 ·
Finding the velocity with out time (s)
- alniquette
- · Replies 4 ·
What is the Resultant Displacement of Superimposed Traveling Waves?
- sydboydell31
- · Replies 1 ·
Angle between 2 vectors given dot product and cross product
- herbally
- · Replies 12 ·
Finding charge density generating an Electric Field
- Ryomega
- · Replies 2 ·
Finding radius a of non-conducting spherical shell
- Ryomega
- · Replies 2 ·
Mixing of substances of different temperature with change of state
- dalcde
- · Replies 4 ·