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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Calculating moment of inertia for nonuniform sphere
- mbcrute
- · Replies 13 ·
Keeping a uniform bar in horizontal equilibrium
- ogodwin
- · Replies 8 ·
Conservation of relativistic energy, collision of particles
- milkism
- · Replies 15 ·
The Entropy Change of Melting Ice: Why is the Equation Written as ΔS = Q/T?
- member 731016
- · Replies 4 ·
Why is the final temperature 74 K in this gas compression problem?
- member 731016
- · Replies 8 ·
Calculating Spacetime Intervals for Simultaneous Events
- milkism
- · Replies 10 ·
Electric fields between point charges
- AliTheAlienTV
- · Replies 3 ·
Why do official solutions have more significant figures than my answers?
- Argonaut
- · Replies 6 ·
Poiseuille equation for water flow rate
- member 731016
- · Replies 16 ·
Uncertainties propagation for area of a rectangle
- member 731016
- · Replies 5 ·
Calculate these 5 temperatures along this Thermodynamic cycle
- Seeit
- · Replies 4 ·
Car with varying velocity on successive road segments
- MatinSAR
- · Replies 9 ·
Where in orbit should a rocket fire to escape with minimum ΔV
- radio360
- · Replies 17 ·
Why does amplitude differ between SHM calculations at t=0?
- Augustine Duran
- · Replies 18 ·
Long distance electrical transmission efficiency
- MrSargeant
- · Replies 2 ·
Method of Images from an earthed half cylinder and plane
- JoelKTH
- · Replies 7 ·
Einstein's Electrodynamics of moving Bodies
- jselms99
- · Replies 7 ·
How does the presence of a cube resistor affect current flow in a circuit?
- johnio09
- · Replies 6 ·
Effect of a polarizer/analyzer on partially polarized light
- FranzDiCoccio
- · Replies 25 ·
Final velocity involving a can of soup and an inclined plane
- as2528
- · Replies 14 ·
Finding tension S1 in a pulley system with mass m
- Heexit
- · Replies 1 ·
Work done to lift a mass of water
- henry3369
- · Replies 6 ·
Rearrange formula and work out phase angle
- leejohnson222
- · Replies 6 ·
MIT OCW, 8.02 Electromagnetism: Potential for an Electric Dipole
- zenterix
- · Replies 1 ·
Surface density of the charges induced on the bases of the cylinder
- rokiboxofficial Ref
- · Replies 7 ·
Moment of inertia problem involving a cylinder rolling down an incline
- as2528
- · Replies 11 ·
1D Particle & Energy w/ F(x): Am I doing this right?
- monsterhart
- · Replies 7 ·
2-D Momentum Problem -- Elastic collision of two spheres
- Jimmy87
- · Replies 12 ·
Forces on Jenga blocks at different layers and pull directions
- maserati1969
- · Replies 20 ·
Thin heartshaped wire - Calculate the magnetic field at the origin
- JoelKTH
- · Replies 18 ·
Electric field generated by solenoid
- quarkyphysicsgirl
- · Replies 4 ·
The gravitating of a small mass towards a big mass
- brotherbobby
- · Replies 3 ·
Finding downward force on immersed object
- member 731016
- · Replies 62 ·
Superposition of two one-dimensional harmonic waves
- orangephysik
- · Replies 10 ·
Damped harmonic oscillation of a swingboat
- orangephysik
- · Replies 6 ·
Doppler effect and acceleration of source
- orangephysik
- · Replies 5 ·
Moments of force on Jenga tower
- maserati1969
- · Replies 14 ·
How to calculate Earth speed of the Moon induced orbit?
- emily-
- · Replies 4 ·
Glass prism and its refractive index
- orangephysik
- · Replies 1 ·
Change in energy stored in a spherical Capacitor
- ssarpal
- · Replies 2 ·
Electric field at the center of the equilateral triangle
- hellowmad
- · Replies 10 ·
Solving Distance Traveled Using Formulas vs. Graphs
- Callmelucky
- · Replies 6 ·
Dipole axis alignment in polar coordinates
- DaraRychenkova
- · Replies 2 ·
Initial speed of an object launched from Mars
- marjine
- · Replies 2 ·
Can an ideal spring ever experience an unbound state?
- marjine
- · Replies 7 ·
Mesh current analysis for balanced 3-phase 4-wire vs 3-wire circuits
- Evari5te
- · Replies 9 ·
Creating a contour system for physics problem
- abvg
- · Replies 8 ·
Find Initial Velocity of a projectile given flight time and angle
- Asem
- · Replies 13 ·
Why does the product-to-sum method derive trig identities?
- member 731016
- · Replies 3 ·
Helium balloon energy conservation
- member 731016
- · Replies 15 ·
Measuring wavelength of microwave radiation using double slits
- member 731016
- · Replies 8 ·
Change in temperature of air in a closed system
- Thomas_Kellner
- · Replies 16 ·
Solar System Forces -- Simulating the planetary orbits for my project
- Parziter
- · Replies 18 ·
Symmetrical parallel inductors, different currents? State Preparation
- yucheng
- · Replies 7 ·
Single transfer lag in an open-loop system
- Keeeen
- · Replies 31 ·
A particle in an infinite square well
- Quatumphysicshelp
- · Replies 2 ·
Speed of sound from resonant length of tube vs tuning fork wavelengths
- member 731016
- · Replies 16 ·
Use linear regression to find Planck’s constant
- member 731016
- · Replies 10 ·
Why is my magnetic field integral off by a million?
- rmrribeiro
- · Replies 10 ·
Which hemisphere is the observer?
- guv
- · Replies 5 ·
What is the adjoint of |01> in quantum computing?
- quantumstudent
- · Replies 2 ·
How to approach dynamics problems?
- cancerman1
- · Replies 8 ·
Gas temperature in a constant volume
- Ebi Rogha
- · Replies 8 ·
Force between point charges at the center of two spherical shells
- vcsharp2003
- · Replies 4 ·
Finding the work done by a block
- HeavenWind
- · Replies 4 ·
Proof of angle in path difference formula for two slits
- member 731016
- · Replies 8 ·
Why does mass behave differently when combining quarks and antimatter?
- talanum52
- · Replies 7 ·
Calculating ΔE Difference for 2 Samples of Monatomic Ideal Gas
- hellowmad
- · Replies 4 ·
Average distance between asteroids in the asteroid belt
- ananonanunes
- · Replies 4 ·
Induced electric field from changing magnetic flux vs field
- dainceptionman_02
- · Replies 11 ·
Thermal expansion of square from temperature increase of 50K
- member 731016
- · Replies 28 ·
Angular acceleration problem for a pulley used to raise an elevator
- leggythegoose
- · Replies 8 ·
How does wave direction determine phase constant from initial conditions?
- Philip551
- · Replies 4 ·
Rate of loss of potential energy
- songoku
- · Replies 3 ·
Graphing Power vs Polarizer Angle using Intensity
- member 731016
- · Replies 32 ·
Power dissipated by a resistor on a coaxial cable
- gausswell
- · Replies 2 ·
Calculate the induced EMF of a rotating loop
- dainceptionman_02
- · Replies 7 ·
Rocket acceleration with variable mass: F=ma vs F=d(mv)/dt
- aniseed
- · Replies 42 ·
Question involving clockwise angular movement
- as2528
- · Replies 9 ·
Measured Surface Resistivity Much Higher than Theoretical Value (Why?)
- LulaBell
- · Replies 3 ·
Question involving angular acceleration of a spinning wheel
- as2528
- · Replies 12 ·
Direction of static friction between a vehicle and circular dome
- alyssam042
- · Replies 9 ·
Power and Efficiency without mass?
- sbrads87
- · Replies 4 ·
Vector-Force image and resolve force
- sHatDowN
- · Replies 27 ·
Why do I get 8 m/s² instead of 4 m/s² for box acceleration?
- Remle
- · Replies 9 ·
Vector sample problem -- Force components on a spring mechanism
- sHatDowN
- · Replies 9 ·
Conservation of power in a traveling wave on a string
- Adrian Simons
- · Replies 9 ·
How do I overcome task confusion?
- leggythegoose
- · Replies 1 ·
Block speed from spring and gravitational potential energy
- leggythegoose
- · Replies 6 ·
Compression/Tension in Steel I Beams
- Alena Selone
- · Replies 23 ·
Forces acting on a block that is pushed against a wall
- MatinSAR
- · Replies 2 ·
At what angle must the boat travel so that it moves in a straight line
- paulimerci
- · Replies 25 ·
Expected value of variance of Hamiltonian in coherent states
- graviton_10
- · Replies 5 ·
Do rigid balls develop periodic density distribution when bounced by springs?
- crazy lee
- · Replies 7 ·
Electric Field Inside Cylindrical Capacitor
- Idontknowhatimdoing
- · Replies 2 ·
Normal Forces on a Sphere in a Non-vertical Groove
- Quasar100
- · Replies 12 ·
Pressure applied to the ground by a man standing on stilts
- sebastian281172
- · Replies 7 ·
Why can γ be negative in the ray reflection formula?
- member 731016
- · Replies 8 ·
A pulley system with two pulleys and two suspended masses
- member 731016
- · Replies 54 ·
Vector problem, magnitude of the force
- sHatDowN
- · Replies 30 ·