Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Working out the frequency/wavelength of a photon.
- physics369
- · Replies 1 ·
How Do You Calculate the Diameter of a Pipe Constriction in Fluid Dynamics?
- pkpiotr517
- · Replies 2 ·
Work-mechanical energy: box sliding
- mamii92
- · Replies 2 ·
Solving a Steam Engine Flywheel Angular Displacement Problem
- jcfor3ver
- · Replies 1 ·
How Do Tension Forces Affect Equilibrium on a Frictionless Surface?
- halpmeplz
- · Replies 5 ·
Launched Rocket (Energy problem)
- I Like Pi
- · Replies 7 ·
How far into the water a ship sits (buoyancy, draft)
- bbraves7
- · Replies 18 ·
Difficult Planetary motion problem
- Hockeystar
- · Replies 3 ·
Find total resistance in mixed circuit
- Princess19
- · Replies 6 ·
Does T3 Equal the Sum of m1g, M2g, and Mpg in a Frictionless Pulley System?
- asz304
- · Replies 1 ·
Sound Intensity of a microphone
- physics_10
- · Replies 1 ·
Which angle goes with which refractive index in Snell's law?
- moondawg
- · Replies 1 ·
Find eccentricity of orbit of comet
- moondawg
- · Replies 2 ·
Potential Energy of Comet-Sun System: Calculate the Answer
- moondawg
- · Replies 2 ·
Did I Solve the RL Circuit Problem Correctly?
- musiliu
- · Replies 3 ·
Can You Determine the Mass of the ISS with Incomplete Data?
- henderson56
- · Replies 4 ·
Finding refractive index of juice from glass-juice critical angle
- jsmith613
- · Replies 14 ·
Drawbacks to use the period of a pendulum as a time standard?
- fizzahasan
- · Replies 7 ·
Calculate the Density of the planet
- enkerecz
- · Replies 2 ·
3 Questions about Force Table - Need someone to check my answers
- Aransaja
- · Replies 1 ·
Calculating Loss of Energy: Ramp Experiment with Ball Mass 0.0083 kg
- Vee9
- · Replies 3 ·
Answering Buoyancy Questions: Are My Answers Correct?
- nickname
- · Replies 1 ·
What is the speed of the block sliding down an inclined plane?
- I Like Pi
- · Replies 5 ·
Push Me Pull You centre of mass motion
- Maybe_Memorie
- · Replies 1 ·
Solving Oscillation Problem: Frequency, Amplitude, Phase
- vande060
- · Replies 1 ·
Physical Pendulum and moment of inertia
- kudoushinichi88
- · Replies 14 ·
Forces acting on rocket at exact moment of liftoff
- bballvas
- · Replies 2 ·
Inelastic collision problems from homework
- adamana
- · Replies 3 ·
Newton's law of gravity problem
- J.live
- · Replies 4 ·
Relative motion,work and energy
- vissh
- · Replies 2 ·
Changing Rotation Speed of an Acrobat Not on the Ground
- harp AP 2010
- · Replies 3 ·
Tarzan swings across a river (centripical force)
- ErrorProxy
- · Replies 2 ·
Thin film oil drop interference
- stpmphysics
- · Replies 18 ·
What is a reasonable loss of energy?
- Vee9
- · Replies 1 ·
Force Acceleration of Two Identical Blocks
- Condensate
- · Replies 2 ·
Angular Speed of a star collapse
- Heat
- · Replies 16 ·
Calculate Angular Displacement: 2.1rad/s to 0rad/s in 4.7s
- tica86
- · Replies 4 ·
Calculating Frictional Work on a Child Sliding Down a Playground Slide
- AZhang
- · Replies 4 ·
Find Coeff. of Static Friction of Car on Track
- wmrunner24
- · Replies 2 ·
How High Will the Bullet-Carrying Cart Climb the Ramp?
- runningirl
- · Replies 1 ·
How Can I Calculate Kinetic Energy in an Explosion?
- shawtaroh
- · Replies 1 ·
Solve Science Fair Experiment: Calculating G-Forces
- hsstudent
- · Replies 1 ·
Finding the width of a diffraction slit
- theskyisgreen
- · Replies 1 ·
Can you find the Force without acceleration?
- xZerocopyx
- · Replies 7 ·
How Much Work Is Done Pushing an 80 kg Box Up a Frictionless Incline?
- jstead
- · Replies 1 ·
Calculating Drag (having circular reference problems)
- josiahseto
- · Replies 4 ·
E field induced by changing B field
- Zywo
- · Replies 1 ·
Pendulum bob speed and tension at lowest point
- Goalie1
- · Replies 2 ·
Musical Instruments and overtones
- BanjooftheSun
- · Replies 2 ·
How to find work done by friction?
- Vee9
- · Replies 2 ·
Newton's Law of Universal Gravitation on the moon
- Sniperman724
- · Replies 1 ·
Child bouncing on pogo stick-harmonic motion
- pb23me
- · Replies 10 ·
Cooking time for cattle falling through Earth's center
- jono90one
- · Replies 1 ·
Can energy of an object be kinetic AND potential?
- Vee9
- · Replies 3 ·
Gravatational Potential Energy Question
- SherazSiddiqu
- · Replies 1 ·
Explanation Needed for Equation for Gravitation/Conservation of Energy equation
- auk411
- · Replies 1 ·
How to use parallel axis theorem?
- asz304
- · Replies 4 ·
Skeet Collision: Height & Distance Calculations | Momentum Question
- runningirl
- · Replies 14 ·
Friction on a box in an accelerating truck
- Confusingmeh
- · Replies 1 ·
Writing Force and Tension Equations
- MysticDude
- · Replies 16 ·
How Does Earth's Shape Affect Gravity at Different Locations?
- atomicpedals
- · Replies 5 ·
Torque when there is variable force
- fondbeech
- · Replies 1 ·
Astronomical telescope refraction problem, an easy one
- alpyurtsever
- · Replies 1 ·
Where is the final image in a 2 lens optics problem?
- iurod
- · Replies 10 ·
Center mass of uniform sheet of steel
- vinnyzwrx
- · Replies 1 ·
Power and force for 11.3 keV proton accelerator
- Puk3s
- · Replies 5 ·
Solving Momentum Collision: Finding Velocity of Sliding Blocks | Homework Help
- runningirl
- · Replies 2 ·
Conservation of Energy within a pulley system
- miamirulz29
- · Replies 1 ·
How Do I Calculate the Net Force on Corner A in an Equilateral Triangle?
- whyisad
- · Replies 3 ·
Does Pascal's Law Apply to the Ocean?
- Cheeser12
- · Replies 1 ·
2 hard angular momentum problems
- Krdall
- · Replies 1 ·
Bullet Hitting Wood the Spring, check of solution
- Adeleine
- · Replies 6 ·
Why is dV = 2πrh dr for cylinder moment of inertia?
- gboff21
- · Replies 3 ·
Is r in the Moment of Inertia Formula Always the Shortest Distance?
- jono90one
- · Replies 2 ·
When will block leave surface ?
- vissh
- · Replies 3 ·
Special relativity and lost mass
- Fisicks
- · Replies 3 ·
Moment of Inertia of a rigid rotating object.
- asz304
- · Replies 2 ·
Why does the Golf Ball Heat Up After Coming to Rest?
- cashflow
- · Replies 4 ·
Impulse imparted by the bat to the ball?
- DrMcDreamy
- · Replies 6 ·
What is the Time Required for a Diver's Signal to Reach the Surface?
- kudoushinichi88
- · Replies 2 ·
Cool Coffee with Melting Ice Cube: Solve for T
- aub
- · Replies 3 ·
Dilatant Fluids: Deriving Formulas for Experiments
- Nimitz
- · Replies 2 ·
Pulley connects 2 masses, problem with inertia to accelleration calculation
- satisf
- · Replies 1 ·
Moment of Inertia of a rod at an angle
- kudoushinichi88
- · Replies 2 ·
Problems with an Orbit: Eccentricity, Inclination, and Other Peculiarities
- spacemike1
- · Replies 1 ·
Deriving a vs F and a vs M equations from lab data
- vysis
- · Replies 6 ·
Calculating Spring Constant and Properties of Simple Harmonic Motion
- ick24
- · Replies 1 ·
Two Biomedical physics questions involving equilibrium.
- ardy121
- · Replies 1 ·
Why does a tall tree hit the ground first when both trees tip over?
- preluderacer
- · Replies 1 ·
Determining Smallest Value of n for Air Wedge Light Fringes
- cyt91
- · Replies 4 ·
Ideal Gas and finding final pressure
- puniverse
- · Replies 4 ·
Optics - working with multiple lenses.
- Jazz House
- · Replies 9 ·
Particle moving in a circle (angular momentum)
- preluderacer
- · Replies 1 ·
Calculating Specific Mechanical Energy in a spacecraft
- spacemike1
- · Replies 1 ·
Isentropic two-stage compression work minimization
- Deathcrush
- · Replies 5 ·
Solving Energy of a Spring: Find Velocity at 2/3 E
- ML1
- · Replies 1 ·
Solving Power Output for 3400 KG Truck on 8° Incline
- AZhang
- · Replies 3 ·
Finding The Volume Of Solid Using Triple Integrals II
- wubie
- · Replies 6 ·
Induced emf in a square loop at rest
- iknowles
- · Replies 1 ·
Angular Momentum Horizontal Metallic Bob
- RivalDestiny
- · Replies 2 ·