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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Generating Power from a Small Hydro Plant on a 10m High Waterfall
- TN17
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Hockey Puck With only one speed
- Hypnos_16
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Find speed with friction force and no mass?
- NewDaddyJones
- · Replies 8 ·
How Do You Calculate the Resultant Force Between Two Vectors?
- oranrene
- · Replies 1 ·
Calculate Friction & Coefficient: Force w/Angle & Mass 5kg at Rest
- iskinny
- · Replies 4 ·
How Do You Calculate the Mass of a Star in Orbit?
- contlee
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Work function of silver given wavelength
- sheepcountme
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Determining the value of acceleration due to gravity
- Malfunction
- · Replies 6 ·
At which locations would both planets gravitational force pull on you ?
- laurenwings5
- · Replies 1 ·
Heat loss through limestone walls with air conditioning
- vande060
- · Replies 1 ·
Moment of inertia of rod with two point masses using parallel axis theorem
- roman15
- · Replies 5 ·
Energy conservation problem (need closure)
- qswdefrg
- · Replies 7 ·
Which Object Reaches the Bottom First? - Solving a Rotational Dynamics Problem
- pb23me
- · Replies 2 ·
Lorentz Transformations and Reference Frames Problem
- zero13428
- · Replies 1 ·
Proving 0 = 6 with x^a=x^b=>a=b
- vissh
- · Replies 5 ·
Calculating Where Electric Field Between Two Charges is equal to Zero
- Brodo17
- · Replies 9 ·
How Do You Calculate Projectile Motion from a Cliff?
- fcb
- · Replies 16 ·
Mercury Displacement in a Sealed Tube: Isothermal vs. Adiabatic Processes
- zygisyyy
- · Replies 2 ·
Nonconservative work on 75 kg surfer dropping 2.05 m
- marcia888
- · Replies 8 ·
Electron Drift in Copper Wire: 40m in 0.020mm/s = Days?
- MegaEriable
- · Replies 1 ·
Change in temperature of water as it flows through a pipe.
- Minerva's Owl
- · Replies 11 ·
Spacecraft orbit insertion burn delta V around Saturn
- gikwiye
- · Replies 7 ·
How Does Sound Travel Time Affect Calculating the Fall of a Watermelon?
- Jimmy84
- · Replies 3 ·
How to calculate the angle of water in a moving beaker
- siukwok
- · Replies 25 ·
Finding center of mass acceleration for a 4-weight pulley system
- Thomas2054
- · Replies 8 ·
Pressure of air in cylinder under water
- frostchaos123
- · Replies 3 ·
Negative Time: A Puzzling Physics Problem
- vissh
- · Replies 5 ·
Why do smaller steps help avoid slipping on ice?
- zorro
- · Replies 9 ·
Rotational Dynamics: Min Initial Velocity of Inelastic Sphere on Cubical Plate
- Mandeep Deka
- · Replies 4 ·
Repulsive Force on Current Carrying Wire
- erok81
- · Replies 1 ·
Why is there a normal force if the ball isn't touching the rock?
- frostchaos123
- · Replies 4 ·
How Do You Calculate the Spacing Between Diffraction Grating Grooves?
- J89
- · Replies 1 ·
Speed of proton as fraction of c
- sheepcountme
- · Replies 3 ·
Static friction, uniform circular motion problem
- thepatient
- · Replies 2 ·
Two spheres falling through water..terminal velocity?
- imatreyu
- · Replies 2 ·
Use of energy or force in spring question
- frostchaos123
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Why does v=at=9.8×2.6 round to 25.5 m/s not 25 m/s?
- doctordiddy
- · Replies 4 ·
What is the constant in Bernouli's equation
- imatreyu
- · Replies 2 ·
Quick potential energy questions
- Anza Power
- · Replies 2 ·
In prism, is angle of deviation related with the refractive index of prism?
- lamborg
- · Replies 4 ·
Inelastic collision between two footballs players on ice
- irishbob
- · Replies 4 ·
Calculating Tray and Food Weight: Torque Question Help Requested
- Student3.41
- · Replies 1 ·
Power generated by a 10m waterfall with 25% turbine efficiency
- Vee9
- · Replies 1 ·
How Does Doubling Water Depth Affect Aquarium Wall Pressure?
- auk411
- · Replies 1 ·
How to Calculate the Magnetic Field in a Toroid?
- dangish
- · Replies 1 ·
Question(Physics 20) about Power(watts)
- Jyote25
- · Replies 5 ·
Direction, velocity and impulse of a ball.
- nasadall
- · Replies 1 ·
What Is the Efficiency of a Refrigerator with a COP of 13.8?
- Jennifer_ea
- · Replies 2 ·
Work and Energy - Prove the equation
- Vee9
- · Replies 18 ·
How Long Before the Smaller Block Separates from the Larger Block?
- zorro
- · Replies 11 ·
Calculate the work done by the kinetic frictional force
- Student3.41
- · Replies 8 ·
Simple Harmonic Motion pulsatance Question
- gedanken6
- · Replies 1 ·
Catwalk attached to a wall by a hinged held up by a cord
- XxseanxX_22@h
- · Replies 13 ·
Where Does the Square Root of gd/2 Come From?
- atypical
- · Replies 5 ·
Young's modulus when you join two different materials
- sinthreck
- · Replies 1 ·
Determining spring mass using only masses and a stopwatch
- moonkey
- · Replies 6 ·
Super fast average acceleration confusion problem
- sarahaha288
- · Replies 2 ·
Determining Mass from Orbital Period and Radius
- procon4
- · Replies 7 ·
A generator having power and creating work for a crane
- Bassi
- · Replies 1 ·
Does acceleration instantly change from zero to a greater number?
- Denken
- · Replies 2 ·
Calculating Work Done on an Accelerating Box
- fiziks09
- · Replies 2 ·
Thermal Expansion of Cube and Sphere
- frostchaos123
- · Replies 3 ·
How to Find the Resultant Wave Equation of Two Plane Waves?
- thebigstar25
- · Replies 11 ·
What does polarity of voltage mean?
- musiliu
- · Replies 1 ·
What is the tension on a high wire supporting an acrobat at a 5 degree angle?
- charmedb4by
- · Replies 13 ·
Friction Problem involving 3 blocks
- zorro
- · Replies 7 ·
Flywheel with kinetic friction
- JJBladester
- · Replies 4 ·
Finding Ratios to Solving Problems
- Enos
- · Replies 10 ·
Angular acceleration and tension with two pulleys on common axle
- jaredsees
- · Replies 1 ·
Chirping Bat and Distance to Moth - Sound Waves
- dvolpe
- · Replies 3 ·
Centripetal force on a top down loop
- onyxorca
- · Replies 5 ·
Calculating Balloon Filling Capacity Using Gas Laws
- icystrike
- · Replies 1 ·
Solving Accelerations of A Can on A Block
- kudoushinichi88
- · Replies 13 ·
Apparent weight of a submerged rock.
- benjamin8462
- · Replies 1 ·
Rolling motion of plank and cylinders
- Kenny Lee
- · Replies 7 ·
What Is the Spring Constant for Kate's Bungee Jump?
- IKonquer
- · Replies 3 ·
What is the Theoretical Range of a Rocket at 79 Degrees?
- ABigFig
- · Replies 2 ·
Walking away from two loudspeakers-destructive interference
- darkblue
- · Replies 16 ·
Path of a projectile from a cannon
- kLPantera
- · Replies 9 ·
Is My Calculation of the Skier's Velocity at the Bottom of the Slope Correct?
- zomgwtf
- · Replies 3 ·
Calculating Rock Throw Height on Distant Planet
- Meowzers
- · Replies 11 ·
Where Can I Find Effective Resources for Learning DC Circuits?
- sam90
- · Replies 2 ·
Tension in the string of a submerged object
- Liketothink
- · Replies 4 ·
Magnetic field of square circut
- Liquidxlax
- · Replies 3 ·
Maximizing Ball Height: Proving Equation with Wind Force | Homework Help
- TN17
- · Replies 1 ·
Potential Energy of a solid sphere and a thin disk
- kudoushinichi88
- · Replies 15 ·
Centrifugal Force- Finding Speed of Satellite
- kitenyos
- · Replies 1 ·
Conservation of Energy and Momentum Lie
- arbitrator
- · Replies 2 ·
Simple Harmonic Motion of a hanging spring
- Winegar12
- · Replies 3 ·
Airplane range in a north wind with bearing angle phi
- trumpsnuffler
- · Replies 40 ·
Minimum putty velocity to rotate a rod up vertically after collision
- Delzac
- · Replies 26 ·
Find time in velocity/Gravity situation
- nasadall
- · Replies 5 ·
Entropy-Isobaric Expansion of a gas to thermal equilibrium
- TheTourist
- · Replies 3 ·
Temperature dependence of Resistance
- zorro
- · Replies 7 ·
How does the Flat Earth Society defy modern day physics?
- deaninator
- · Replies 1 ·
How is Heat Transfer Calculated in Ice Melting Problems?
- sdevgon
- · Replies 3 ·
Ice-water heat exchange with phase change
- HollowScar
- · Replies 11 ·
How Far Apart Are the Masses on the Dumbbell-Shaped Flywheel?
- Noctix
- · Replies 2 ·
How Do You Calculate Kinetic Energy Changes in Rotational Motion?
- Noctix
- · Replies 2 ·
Doppler effect with 4 tubes at 3rd harmonic
- andy_un
- · Replies 1 ·