Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Viscosity in lubricating fluid in the bench-guide of a machine
- Guillem_dlc
- · Replies 16 ·
Manometer containing two liquids
- Guillem_dlc
- · Replies 1 ·
Spring and block on an inclined plane
- king_harsh
- · Replies 27 ·
Is it possible to solve this problem without using integrals or derivatives?
- Elementard
- · Replies 4 ·
Is Mass Irrelevant in This Problem?
- Arwing
- · Replies 5 ·
Find the electric field at a point away from two charged rods
- Jaccobtw
- · Replies 11 ·
Expectation value in momentum space
- VVS2000
- · Replies 3 ·
Ampere's Law for Cylindrical Conductor
- amwil
- · Replies 2 ·
Acceleration required for ship to avoid crashing into another ship
- crememars
- · Replies 15 ·
Surface density of stars in a Galaxy
- Barbequeman
- · Replies 1 ·
Rotational dynamics: Resolving forces
- wcjy
- · Replies 29 ·
The maximal normal force (Friction with slanted surface)
- Crunge
- · Replies 18 ·
Hanging mass on a massless pulley
- kasnay
- · Replies 2 ·
Derive angular frequency for mass spring system
- so_gr_lo
- · Replies 14 ·
Order of Magnitude Difference: Solving with Torricelli & Bernoulli
- maxolina
- · Replies 6 ·
Velocity comparison -- Which thrown mass hits the ground first?
- mathbrain9
- · Replies 5 ·
Normal force at the top of a vertical loop -- Circular Motion Dynamics
- Idontknowhatimdoing
- · Replies 8 ·
Mass on a Spring semi-submerged in a liquid
- MatinSAR
- · Replies 1 ·
Finding a rocket's speed at height h
- meghanflowers
- · Replies 3 ·
Air Resistance Question -- Dropping a tennis ball and a feather....
- theanswer2physicsisu
- · Replies 22 ·
1D collision, varying masses but same initial velocity
- mncyapntsi
- · Replies 15 ·
Distance travelled by a car considering only air friction?
- Suekdccia
- · Replies 4 ·
How to find minimum possible mass
- ssarpal
- · Replies 6 ·
Force of spring equation problems
- Elementard
- · Replies 4 ·
Find the Height of a Building by dropping a ball from the top
- Tesla In Person
- · Replies 7 ·
Phase of a wave - My interpretation
- Shreya
- · Replies 4 ·
How Do You Calculate the Spring Constant from Two Different Masses?
- brake4country
- · Replies 14 ·
2 very difficult light ray diagram questions -- help please
- bomberkid
- · Replies 25 ·
Is the rocket equation correct using conservation of momentum?
- heyhey281
- · Replies 8 ·
Flux density help please (seawater flowing in a tube)
- olibee
- · Replies 2 ·
Force and Kinematics -- Accelerating a 10kg box vertically
- theanswer2physicsisu
- · Replies 5 ·
Acceleration of a person jumping off of a bathroom scale
- Physics_Amazing
- · Replies 9 ·
Solving LC circuit with energy conservation
- ermia
- · Replies 4 ·
Pulling a crate across the floor with a rope at an angle
- jevans123
- · Replies 14 ·
A 4kg mass sits on a frictionless table....
- MrBeans
- · Replies 3 ·
Checking Graphs: Are the Results Accurate?
- Differentiate it
- · Replies 11 ·
NLM Problem: More variables than equations
- Seeker220
- · Replies 8 ·
Wave Period Calculation: Is 0.1 the Correct Answer for Frequency of 1/10?
- bobacity
- · Replies 4 ·
Calculating Speed of a Wave | Solving Problem with Period of 0.025s
- bobacity
- · Replies 8 ·
Hall effect over a conducting ring
- Trisztan
- · Replies 4 ·
Kinematics chasing problem: Car vs. Motorcycle acceleration question
- jerad908
- · Replies 5 ·
Solving Simple Oscillation Frequency: A Quick Guide
- bobacity
- · Replies 11 ·
Simplify this expression for the period
- crememars
- · Replies 4 ·
Vectors Help -- Weight hanging from a cord
- yoyo16
- · Replies 15 ·
Capacitor Network - Series or Parallel?
- Shreya
- · Replies 6 ·
Vector questions with X and Y Components
- homeworks
- · Replies 15 ·
Calculating Velocity & Field Strength of Gas: Help Needed!
- Barbequeman
- · Replies 1 ·
Problem with two pulleys and three masses
- Erdi
- · Replies 102 ·
System of Masses - Atwood Machine
- erobz
- · Replies 13 ·
Static Equilibrium of a Rod attached to a Pivot
- bbsgirl10
- · Replies 24 ·
How can I determine the shape of an oldie acid molecule?
- hexanimal
- · Replies 1 ·
Is it possible to solve relative velocity problems without sine law?
- Angad401
- · Replies 25 ·
Calculate the best angle for maximum light dispersion through a medium
- Jan Berkhout
- · Replies 2 ·
Where did the minus sign come from?
- Edwardy
- · Replies 5 ·
Confusion about Instructor's solution of HRK
- phymath7
- · Replies 3 ·
Finite potential well problem penetration depth
- Ashish Somwanshi
- · Replies 19 ·
Velocity and acceleration graphs
- bbsgirl10
- · Replies 17 ·
Beat frequency heard from two tuning forks
- Andrew Tom
- · Replies 4 ·
Maximizing Learning: The Importance of Showing Your Work in Problem Solving
- Ashish Somwanshi
- · Replies 18 ·
Travelling wave and standing wave
- Andrew Tom
- · Replies 1 ·
Apparent depth of an object underwater
- lorenz0
- · Replies 3 ·
Question on Emission Spectra/Spectral Series | Atomic Physics
- warhammer
- · Replies 26 ·
How does this capacitor circuit not violate conservation of charge?
- lightlightsup
- · Replies 11 ·
Can Gravity Make a Hoop Rise Off Its Support When Beads Slide Down?
- UnterKo
- · Replies 25 ·
Forces on a rope when catching a free falling weight
- Zeusex
- · Replies 59 ·
Firefighter sliding down a pole
- petrichortea
- · Replies 16 ·
RC Circuits: Measuring Capacitance
- amwil
- · Replies 1 ·
How to solve this chain with Kirchhoff's laws?
- Oleksii
- · Replies 18 ·
How do I calculate physics formulas containing derivatives and real numbers?
- NODARman
- · Replies 5 ·
Tug of war applications using Newton's third law
- bbgur
- · Replies 9 ·
Infinite potential well problem normalization
- Ashish Somwanshi
- · Replies 12 ·
Conservation of momentum (wrecking ball hits a stationary object)
- SMOKEYWC
- · Replies 10 ·
Acceleration of the cart on a Ferris Wheel (Circular Motion)
- Crunge
- · Replies 11 ·
Incorrect Textbook Answer involving kinematics?
- canaanbowman
- · Replies 8 ·
Distance between the first and third maximum intensity detected
- songoku
- · Replies 4 ·
Correct statement about sound wave
- songoku
- · Replies 2 ·
I don't understand force as a function of time
- fishturtle1
- · Replies 9 ·
System of two pulleys and three masses
- Tlurk
- · Replies 22 ·
What is the Focal Length of a Lens for a Perfectly Fitting Image on a Sensor?
- thementalist123
- · Replies 8 ·
Relative velocity Question for a Ferryboat
- ahsila432
- · Replies 2 ·
Circular motion of a mass on a string on an inclined plane
- ThEmptyTree
- · Replies 14 ·
Time for the pendulum to come to a stop
- Aristarchus_
- · Replies 3 ·
Correct statement about transverse wave propagating along a string
- songoku
- · Replies 7 ·
Find the step on which the hockey puck will land
- NotInMrPutmansClass
- · Replies 6 ·
For a Pendulum: Knowing Acceleration Find Maximum Angle
- babaliaris
- · Replies 26 ·
Free fall with a partial time provided
- ConfusedStudentx10E9
- · Replies 14 ·
Needing some help about time of flight of a launched ball/horiz range
- AmandaP
- · Replies 6 ·
Solving a Ball Thrown off a Cliff: How Long Does it Take?
- NotInMrPutmansClass
- · Replies 4 ·
How does the electroscope lose electrons to the Earth?
- vcsharp2003
- · Replies 5 ·
So confused by these multi-step questions, free fall related:
- ConfusedStudentx10E9
- · Replies 11 ·
Sonometers, tuning forks, and wave periodicity
- Ahmed1029
- · Replies 5 ·
Electric Dipole Moment, Potential, and Field of contiuous charge
- zephyr5050
- · Replies 11 ·
Is the Classical Pendulum Formula Still Accurate for Large Theta Values?
- rehab
- · Replies 16 ·
The 38th problem: I'm not getting the result in the book (SHM problem)
- Pawn
- · Replies 26 ·
Why Does the Electric Field Sum Instead of Cancel with Opposite Charges?
- hello721
- · Replies 6 ·
The density of a proton (hydrogen nucleus)
- mrcake
- · Replies 9 ·
Why are tension and friction in the same direction?
- pibbler
- · Replies 6 ·
Using Seismic Waves detected at 4 Seismometers to determine the Epicenter
- Ira_anabelle
- · Replies 4 ·
Relative motion with constant acceleration
- MatinSAR
- · Replies 8 ·
Relative velocity and projectile motion problem solving
- SAM31
- · Replies 7 ·