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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Total force that a fluid exerts on a cylinder
- Guillem_dlc
- · Replies 2 ·
How do I incorporate electric fields into capacitors?
- MinaciousOviraptor
- · Replies 19 ·
Hollowed out sphere exerting gravitational force
- jolly_math
- · Replies 4 ·
Air wedge interference: why ignore reflections from top surface?
- Andrew Tom
- · Replies 1 ·
Why doesn't table height matter in spring-launched projectile problem?
- jolly_math
- · Replies 6 ·
Elevator falling and bouncing back from a spring
- jolly_math
- · Replies 1 ·
Two 70 kg skaters pulling 15 m rope toward each other
- VidsEpic
- · Replies 12 ·
Resultant force and centre of pressure in a tank
- Guillem_dlc
- · Replies 16 ·
Tetrahedron with 3 points fixed, and force applied to 4th
- SilasHokanson
- · Replies 11 ·
I'm getting two possible uncertainties for frequency
- Andrew Tom
- · Replies 8 ·
Compressor driven by an electromagnet
- Guillem_dlc
- · Replies 6 ·
Can't remember equation for coefficient
- Arwing
- · Replies 2 ·
Second bright fringe in Young's Experiment
- Andrew Tom
- · Replies 3 ·
Functional representation of the oscillating graph
- yilmaz
- · Replies 15 ·
Air wedge interference pattern after being filled with water
- Andrew Tom
- · Replies 5 ·
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 ·
Finding displacement from a velocity function without integrals
- Elementard
- · Replies 4 ·
Mass not given in problem setup
- 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 ·
Enterprise and Klingon ship collision avoidance kinematics
- crememars
- · Replies 15 ·
Surface density of stars in a Galaxy
- Barbequeman
- · Replies 1 ·
Cylinder rolling down incline: tension and friction
- 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 ·
Torricelli gives 10× higher velocity than 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 ·
Why does a tennis ball fall faster than 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 ·
Ray diagram questions with refraction and reflection
- bomberkid
- · Replies 25 ·
Is the rocket equation correct using conservation of momentum?
- heyhey281
- · Replies 8 ·
Salt flux density in diffusion from seawater to freshwater
- 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 ·
Finding tension in a connected mass system on a frictionless table
- MrBeans
- · Replies 3 ·
Checking if velocity and position graphs are consistent
- Differentiate it
- · Replies 11 ·
Non-inertial frame problem with five unknowns and four equations
- Seeker220
- · Replies 8 ·
Wave Period Calculation: Is 0.1 the Correct Answer for Frequency of 1/10?
- bobacity
- · Replies 4 ·
Finding wave speed from frequency and period
- bobacity
- · Replies 8 ·
Hall effect over a conducting ring
- Trisztan
- · Replies 4 ·
Car and motorcycle chase problem: finding catch-up time
- jerad908
- · Replies 5 ·
Finding oscillation frequency from a period of 0.400 μs
- bobacity
- · Replies 11 ·
Simplify this expression for the period
- crememars
- · Replies 4 ·
Weight suspended on a cord between two points 5m apart
- yoyo16
- · Replies 15 ·
Capacitor Network - Series or Parallel?
- Shreya
- · Replies 6 ·
Vector questions with X and Y Components
- homeworks
- · Replies 15 ·
Calculating magnetic field strength from spectral line Doppler shift
- 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 ·
Why should I show my work on homework problems?
- Ashish Somwanshi
- · Replies 18 ·
Travelling wave and standing wave
- Andrew Tom
- · Replies 1 ·
Apparent depth of an object underwater
- lorenz0
- · Replies 3 ·
Why does 310 nm fall outside all spectral series?
- 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 ·
Pendulum with equal acceleration at highest and lowest points
- babaliaris
- · Replies 26 ·