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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Deriving gravitational potential energy -- mistake
- jl12
- · Replies 9 ·
Rising of a liquid during rotataion in a cylinder
- NimzCr7
- · Replies 1 ·
Particle Motion; Acceleration directly proportional to time
- Alexanddros81
- · Replies 2 ·
Forces acting on a spool of mass M
- issacnewton
- · Replies 5 ·
Difference between pressure antinodes and displacement node?
- eprparadox
- · Replies 1 ·
Can you find the total vertical force acting on this rod?
- HappyFlower
- · Replies 16 ·
Magnetic Force with Parallel currents
- Ignitia
- · Replies 6 ·
How Efficient Can a Radiative Heat Engine Be for a Moon Base?
- Physgeek64
- · Replies 1 ·
Finding wave speed and amplitude from pulse equation y=0.8/((4x+5t)²+5)
- Hydrous Caperilla
- · Replies 8 ·
Find the force as a function of radius to pull a ribbon
- Kanda ryu
- · Replies 6 ·
Is it possible to find dy given the values of dx and v?
- MIIF
- · Replies 1 ·
What is the maximum capacitance of the device?
- dect117
- · Replies 6 ·
Buoyant force on a submerged body
- Vinita
- · Replies 11 ·
Rotational Motion and Torque problem
- jackthehat
- · Replies 12 ·
Static Pulley Problem on an Incline
- equinom
- · Replies 9 ·
Contact lens to eyeglasses prescription conversion with diopters
- Altagyam
- · Replies 3 ·
Angled falling Meter Stick on a frictionless surface
- stormfalconx
- · Replies 14 ·
AC Circuit Analysis- Find Impedance
- Valour549
- · Replies 2 ·
Projectile Motion Graph Analysis
- robax25
- · Replies 1 ·
Spring Stretch in Circular Motion
- robax25
- · Replies 1 ·
Can the Sum of Second Derivatives of Charges be Claimed in a CLC Circuit?
- ForumGuy
- · Replies 1 ·
Biot-Savart Law For Calculating Net Magnetic Field
- Ignitia
- · Replies 3 ·
Finding initial velocity of two elementary particles
- asilvester635
- · Replies 1 ·
Pin in Double Shear (Mechanics of Materials)
- michael page
- · Replies 24 ·
What Power Is Dissipated by the R2 Resistor?
- andquotethat
- · Replies 5 ·
Harmonic oscillator - chance of of finding particle x>0
- renec112
- · Replies 15 ·
Tuning fork standing wave in a water pipe
- EF17xx
- · Replies 2 ·
How to Calculate Upward Force on Each Anchorage?
- ZeroFive
- · Replies 3 ·
Where must a third charge be placed to get a net force of 0
- Perseverence
- · Replies 21 ·
How can we double the amplitude of an oscillator?
- eprparadox
- · Replies 8 ·
Decreasing the resistance at constant voltage
- Perseverence
- · Replies 4 ·
How to find Angular Speed when given frequency?
- Fernando Calvario
- · Replies 4 ·
Measuring velocity in a pitot-static tube and manometer
- JJBladester
- · Replies 3 ·
Newton's second law problem with friction
- isukatphysics69
- · Replies 2 ·
Simple Harmonic Motion with Linear Momentum
- lc99
- · Replies 5 ·
Given a uniform chain on an incline, find the work done by friction
- Kanda ryu
- · Replies 8 ·
A Capacitor with initial charge
- Onur
- · Replies 3 ·
Standing wave in a tube -- multiple choice question
- EF17xx
- · Replies 4 ·
Output voltage in circuit with diodes
- Jahnavi
- · Replies 26 ·
A man is driving around a curve rather quickly one day
- HappyFlower
- · Replies 5 ·
Interferometer Considerations: Arm Lengths and Vibration Noise
- WWCY
- · Replies 2 ·
Unpolarised light incident on a water surface
- EF17xx
- · Replies 1 ·
Riding a bicycle around a tree w/ constant acceleration
- Fernando Calvario
- · Replies 20 ·
Penguin sliding up a ramp with friction
- isukatphysics69
- · Replies 7 ·
Potential difference between two points in a loop
- Jahnavi
- · Replies 14 ·
Linear fictitious force problem
- Clara Chung
- · Replies 1 ·
Why Use Area Instead of Mass in Moment of Inertia Formula?
- yecko
- · Replies 7 ·
Work done by constant force pushing shoe box up frictionless ramp at constant speed
- BlackJ
- · Replies 8 ·
Why is photodiode efficiency less than 100%?
- Dima Petrukhin
- · Replies 2 ·
Potential Difference Problem - setting up the integral
- Taulant Sholla
- · Replies 5 ·
What does the 1A symbol on the left represent in this circuit?
- Jahnavi
- · Replies 6 ·
AC voltage across a parallel branch
- Jahnavi
- · Replies 5 ·
What is the meaning of equation: M = ∑mi
- rudy
- · Replies 2 ·
Refractive index of glass from total internal reflection at 48.7°
- DylanXO
- · Replies 8 ·
Find the maximum amplitude of the induced EMF
- chocolatecake
- · Replies 9 ·
Particle Motion: Zero Velocity and Distance Traveled at x=0
- Alexanddros81
- · Replies 1 ·
Solving for Car Speed and Stopping Time in a Braking Scenario
- Alexanddros81
- · Replies 1 ·
Find the forces on a table that is lifted in a tilted position
- Helly123
- · Replies 29 ·
Motion of a particle and zero velocity
- Alexanddros81
- · Replies 3 ·
Why is D the correct answer for this multiple choice question?
- EF17xx
- · Replies 2 ·
Block pushed up against wall, determine the force of friction
- isukatphysics69
- · Replies 1 ·
Finding a maximum force in a beam type system before failure
- ridiculoid
- · Replies 11 ·
Finding the maximum value of current through the inductor
- Rick001
- · Replies 1 ·
Find the amount of work to move a particle from point A to B
- Aleksandre
- · Replies 4 ·
Finding power as a function of time in transferring water
- Kanda ryu
- · Replies 11 ·
An Eskimo child sliding down an igloo
- ChessEnthusiast
- · Replies 17 ·
What is the correct solution for the temperature expansion problem?
- bolzano95
- · Replies 3 ·
The motion of a particle is defined by the relation
- Alexanddros81
- · Replies 4 ·
A baseball is thrown from the outfield toward the home plate
- Apple
- · Replies 5 ·
Energy expectation value and variance for harmonic oscillator superposition state
- renec112
- · Replies 7 ·
SHM and why does the frequency not decrease?
- Dima Petrukhin
- · Replies 4 ·
Maximum number of maxima in a diffraction grating
- Atomsmasher2001
- · Replies 4 ·
Having trouble working out centripetal force?
- Jan Berkhout
- · Replies 4 ·
Does a man jumping off a rolling cylinder affect its velocity?
- Brilli
- · Replies 5 ·
Newtonian Mechanics : Rectillinear Motion of a Particle
- Fia Ismi Nur Alfiah
- · Replies 3 ·
Maximum Velocity for different accelerations
- Noah Drakes
- · Replies 24 ·
Synchronized clocks in two moving reference frames
- Faiq
- · Replies 1 ·
Point where the electric field is zero
- Aleksandre
- · Replies 1 ·
First order pertubation of L_y operator
- renec112
- · Replies 4 ·
Electric potential at three radii with concentric spherical shells
- rsatchel
- · Replies 7 ·
Plotting voltage and electric field graphs from potential measurements
- Const@ntine
- · Replies 1 ·
How do we use Bernoulli's Principle in this situation?
- eprparadox
- · Replies 6 ·
Finding the angle of an electron striking a plate
- chef99
- · Replies 3 ·
Magnitude of the average force during a collision
- Jay232323
- · Replies 2 ·
When is Pascal's Principle applicable?
- eprparadox
- · Replies 5 ·
Normal force reading on a scale -- How and why?
- Elvis 123456789
- · Replies 9 ·
Photoelectric effect , Superposition of sine waves
- Terry Bing
- · Replies 5 ·
Bead on a string, find y(x) if horizontal velocity is const.
- Phantoful
- · Replies 2 ·
Using the ladder operator to find Y3,3 from Y2,3
- says
- · Replies 23 ·
Does the current increase or decrease through the resistor ?
- Jahnavi
- · Replies 2 ·
Coefficient of Friction when Normal Force is Reduced [HS]
- Liam C
- · Replies 5 ·
What is the average speed for the entire duration? Trick?
- Perseverence
- · Replies 2 ·
Making Capacitance the subject of discharge equation
- Daniel2244
- · Replies 13 ·
Why do Christmas lights glow green near a Tesla coil?
- Willow Wanda
- · Replies 9 ·
Determining the magnetic force on an electron
- chef99
- · Replies 3 ·
What is the Critical Density for a Wedge in Water?
- Brilli
- · Replies 18 ·
How do varying forces on a massless rope affect tension?
- ForceBoy
- · Replies 2 ·
Fabry-Perot interferometer amplitude and finesse
- Clara Chung
- · Replies 2 ·
Kinetic Energy Needed for Proton Acceleration
- fatcats
- · Replies 8 ·