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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Coefficient of volumetric expansion of gasoline at different temperatures
- Doshke
- · Replies 5 ·
Mechanical system in one dimension
- TheDispStud
- · Replies 2 ·
Coaxial cable insulator resistance with doubled dimensions
- hidemi
- · Replies 7 ·
Finding angles with Bragg's Law
- baseballfan_ny
- · Replies 20 ·
Finding the final temperature of a mixture of ice and steam
- ayans2495
- · Replies 31 ·
What's the error in my solution (Freight car and hopper)
- yucheng
- · Replies 12 ·
Bernoulli Equation — Discharging water from a partially-filled sealed tank
- sci0x
- · Replies 6 ·
Charges, rod and magnetic field
- akhi999
- · Replies 5 ·
Magnetic field of a current loop
- MahalMuh
- · Replies 3 ·
Two rotating coaxial drums and sand transfering between them (Kleppner)
- yucheng
- · Replies 8 ·
Why is it important to check the magnitude of vectors when adding them?
- ryanking93
- · Replies 7 ·
Determining the uncertainity in Geiger Counter data
- learningastronomy
- · Replies 4 ·
Acceleration of objects connected by pulley on rough inclined plane
- songoku
- · Replies 5 ·
The mathematics behind airplane lift
- tania123
- · Replies 2 ·
Why does the normalized wavefunction include a √2/a factor?
- tina21
- · Replies 5 ·
Force on a dipole in a uniform electric field
- hidemi
- · Replies 3 ·
Rocket propulsion equation: what's the error here?
- yucheng
- · Replies 2 ·
Potential difference between the center of a sphere and a point 4.0 cm away?
- hidemi
- · Replies 7 ·
Finding frequency of spring and friction system
- JoeyBob
- · Replies 8 ·
Simple problem about relativity and train
- LCSphysicist
- · Replies 2 ·
Finding height of buffer regions and viscous sublayer turbulent flow
- Master1022
- · Replies 4 ·
Why is sinusoidal wave equation a standing wave?
- noobmaster69
- · Replies 2 ·
Ballistics -- How deep does the bullet penetrate into the wood?
- duchuy
- · Replies 3 ·
Incorrect derivation of tangential acceleration in polar coordinates
- yucheng
- · Replies 4 ·
Angular speed of rod shot by bullet
- songoku
- · Replies 11 ·
Measuring the natural frequency of a spring-mass system driving force
- happyparticle
- · Replies 39 ·
Applications of Newton's laws - coefficient of friction
- Jujubee37
- · Replies 8 ·
Equilibrium: Mass on an inclined plane held by a string, find the tension
- Jujubee37
- · Replies 4 ·
How Do You Normalize the Wave Function for a Particle in an Infinite Well?
- docnet
- · Replies 14 ·
How to find the focal length of a lens (Problem with a task)
- Sajo
- · Replies 1 ·
Determine the largest current the generator can produce
- Vladi
- · Replies 8 ·
Simple Work Problem Disagreeing with Kinematics
- anthonywsadler
- · Replies 4 ·
Finding closest distance that will generate destructive interference
- JoeyBob
- · Replies 9 ·
Equation of motion of a chain with moving support
- Jenny Physics
- · Replies 21 ·
Available energy in β+ and β- nuclear reaction
- duchuy
- · Replies 4 ·
Reacting to Life's Changes: Tips for Coping
- jjson775
- · Replies 22 ·
Converting voltage to angle and intensity in Young's double-slit experiment
- Athenian
- · Replies 6 ·
The intensity of the sound wave
- hidemi
- · Replies 1 ·
Getting the angular velocity using the angular acceleration graph
- dahoom102
- · Replies 3 ·
Grade 11 Question: Newton's Third Law -- Calculating acceleration of an airboat
- Ibo7526
- · Replies 3 ·
What is the effect on a diffraction pattern when reducing the width of the slit?
- hidemi
- · Replies 11 ·
Destructive interference through a narrow slit
- JoeyBob
- · Replies 5 ·
How Does Angular Frequency Relate to Cycle Frequency in Wave Equations?
- hidemi
- · Replies 1 ·
Electric field as a function of distance for concentric spheres
- Feeziks
- · Replies 11 ·
Superposition in separation method of variables
- Celso
- · Replies 5 ·
Oscillation of a drumhead membrane
- A13235378
- · Replies 3 ·
Experience Life with Nothing - Welcome!
- A13235378
- · Replies 1 ·
Determining the maximum braking power using derivations
- arhzz
- · Replies 6 ·
Power calculations of AC signal
- PhysicsTest
- · Replies 1 ·
Acceleration of U-pipe containing water
- songoku
- · Replies 13 ·
Given the frequency and wavespeed, find k
- JoeyBob
- · Replies 7 ·
The energy of the first excited state of the system
- hidemi
- · Replies 17 ·
Why is the horizontal kinetic energy component constant but not the answer?
- hidemi
- · Replies 8 ·
Wave, given wavespeed, wavelength, amplitude - find w.
- JoeyBob
- · Replies 4 ·
Photoelectric Effect Classical Breakdown
- baseballfan_ny
- · Replies 8 ·
Determine initial velocity of a vertical throw
- duchuy
- · Replies 11 ·
Determine the speed and tension of keys swinging in a circular path
- Traced
- · Replies 8 ·
Monochromatic light, Pattern on the screen
- hidemi
- · Replies 2 ·
Energy - momentum relationship
- jjson775
- · Replies 18 ·
Concept of Hidrostatic Pressure in Random Shaped Vessel
- Vermilion X
- · Replies 2 ·
If the wave function is normalized, what is the probability density at x?
- hidemi
- · Replies 4 ·
What Are Longitudinal Standing Waves and How Do They Work?
- hidemi
- · Replies 6 ·
How do I simplify 2^(-m) x 3^(-m) x 6^(2m) x 3^(2m) x 2^(2m) as a power of 6?
- Darkmisc
- · Replies 2 ·
Two nested solenoids and their magnetic fields
- MahalMuh
- · Replies 1 ·
Hydrostatic Problem: Hinged water gate at the bottom of a reservoir
- CWatters
- · Replies 3 ·
Getting 9.8m but answer should be 36m for police chase problem
- IWillBarelyUseThis
- · Replies 6 ·
[Special Relativity] - Finding the Proper Length at Rest in Frame S'
- Athenian
- · Replies 2 ·
Orbital Periods of Planets vs Comets
- ver_mathstats
- · Replies 1 ·
Gravitational potential energy from Einstein field equations
- Raydmajeed
- · Replies 2 ·
Particle constrained on a curve
- randy
- · Replies 9 ·
Doppler effect in Special relativity -- Solution verification
- romanski007
- · Replies 1 ·
Magnitude and direction of k vector
- jaus tail
- · Replies 6 ·
I with these 2 questions for physics (PE and KE questions)
- hayabuali3
- · Replies 2 ·
Microwave generator and a resonant cylindrical cavity
- Elsi b
- · Replies 2 ·
How to determine the spring constant in a Lennard-Jones potential
- happyparticle
- · Replies 24 ·
Tension in a rope holding a mass under a helicopter rising at constant speed
- John Mcrain
- · Replies 21 ·
Why is PV work in thermodynamics so difficult to understand?
- Est120
- · Replies 3 ·
Vertical flight with air resistance
- brotherbobby
- · Replies 11 ·
Determine the acceleration of a puck on an inclined air hockey table
- duchuy
- · Replies 16 ·
Problem involving an adiabatic process
- Another
- · Replies 1 ·
Understanding Griffith's Velocity Argument for Charge Integration
- psie
- · Replies 9 ·
Am I Calculating the Components of V3 Correctly?
- guyvsdcsniper
- · Replies 9 ·
Is the latter part of the momentum conservation question correct?
- PCAPS
- · Replies 14 ·
Density of balls submerged in a liquid and connected by a hard rod
- Combinatorics
- · Replies 20 ·
Heating water in a constant pressure tank
- Chestermiller
- · Replies 20 ·
Simple Wavelength Problem (wire of fixed length vibrating)
- JoeyBob
- · Replies 4 ·
How fast is the star moving? (Doppler effect)
- HalJordan2814
- · Replies 5 ·
Pulley's mass is invariant to the physics problem?
- Helena Wells
- · Replies 13 ·
Nonconservative Forces Problem with a Model Airplane
- momoneedsphysicshelp
- · Replies 3 ·
Calculate flow rate in a tap and the height of a reservoir
- Combinatorics
- · Replies 5 ·
Intro special relativity problem regarding time dilation
- RagedFountain25
- · Replies 4 ·
Is There More Than One Way to Solve a Trivial Vector Problem?
- guyvsdcsniper
- · Replies 4 ·
Finding the maximum velocity and PE of the block between 2 springs
- Jenny0000
- · Replies 10 ·
Check on a basic kinematic problem (FBD of a cabin on a Ferris wheel)
- greg_rack
- · Replies 2 ·
Are Bethe's two dipole representations equivalent in diffraction theory?
- PhDeezNutz
- · Replies 2 ·
To prove that three forces are in equilibrium
- gnits
- · Replies 6 ·
Find the load saved by a pulley system
- Ithilrandir
- · Replies 15 ·
Fractional increase of energy vs momentum with relativity
- Kaguro
- · Replies 4 ·
Solving Centrifugal Forces in a Rotating Coordinate System
- warhammer
- · Replies 6 ·
Wavelength of a transparent medicine
- mxhammed
- · Replies 3 ·