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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A capacitor in an AC circuit. What is the amplitude of the current?
- mrknowknow
- · Replies 11 ·
Can a Charged Particle Move in a Straight Line in a Nonzero Magnetic Field?
- Rsealey
- · Replies 2 ·
Calculating the temperature of the sun using wavelength of iron atoms
- KiNGGeexD
- · Replies 11 ·
Fluid dynamics in horizontal pipe
- Bengo
- · Replies 10 ·
Problem - Lagrange function for mass on springs attached on a frame
- asynja
- · Replies 3 ·
Temperature Rise of Steel Ball in Water/Ice
- GoodOldLimbo
- · Replies 1 ·
Missing technique used to find acceleration of a 4-bar mechanism?
- MechE
- · Replies 4 ·
Simple Tension Problem: Free Body Diagram and Calculating Normal Force
- Kant Destroyer
- · Replies 13 ·
Which has a greater Gravitational Energy?
- Hockey101
- · Replies 7 ·
Mass and pulley system question
- Dtbennett
- · Replies 1 ·
Elastic string with mass at its end
- Saitama
- · Replies 12 ·
Impedance as a function of angular frequency
- yaro99
- · Replies 8 ·
Total distance in simple harmonic motion
- chococho
- · Replies 3 ·
Electron enters uniform magnetic field and takes circular path
- jamesrb
- · Replies 5 ·
Bernoulli's equation, static fluid, gauge pressure problem.
- BOAS
- · Replies 3 ·
Charged ball above saltwater: why is the water elevation 1.85cm?
- Dinheiro
- · Replies 10 ·
Rotational Inertia and Motion problems
- PhysicsPenguin
- · Replies 3 ·
Magnetic Force on a Circuit: What is the Magnitude of Force on a Structure?
- Saitama
- · Replies 4 ·
Physics Pressure ranking pressures?
- airaa12599aa
- · Replies 1 ·
Air Resistance of a Diver using Ek and Eg
- physicsmyfav
- · Replies 4 ·
Nuclear decay of a mixture of P and S. (2009 USAPhO Question A2)
- vthem
- · Replies 14 ·
Finding B·dl around an ellipse with a semicircular current arc
- Saitama
- · Replies 13 ·
Coefficient of static friction of a sliding block
- jannx3
- · Replies 2 ·
Uniform rod resting against rough vertical wall supported by a string.
- kozor
- · Replies 3 ·
Finding the spring constant of a mass in SHM
- KiNGGeexD
- · Replies 6 ·
Frequency of Circular Motion in Ring Rolling Inside a Cone
- Saitama
- · Replies 30 ·
Calculating Energy Stored in a Parallel-Plate Capacitor
- yayovio10
- · Replies 20 ·
Projectile angles for equal range at 45 degrees
- Physicshelp14
- · Replies 3 ·
SHM Oscillation problem involving potential energy
- goraemon
- · Replies 3 ·
Derivation of Noether's theorem in Lagrangian dynamics
- physiks
- · Replies 2 ·
Entropy of a Fermi dirac ideal gas
- Dassinia
- · Replies 1 ·
The effect of a stationary proton on a stationary electron
- Mindstein
- · Replies 2 ·
Force on person in rotating box at 10 m/s
- adjacent
- · Replies 9 ·
Arithmetic Question Involving Quantum Physics
- Coop
- · Replies 1 ·
Atom Absorbing and Emitting Photons
- blue_lilly
- · Replies 3 ·
Finding latent heat of vaporization from evaporation rate
- Bgerst103
- · Replies 3 ·
Power needed to evaporate water at 0.25 g/s
- Bgerst103
- · Replies 3 ·
Finding wavelength from graphs at fixed time and position
- negation
- · Replies 2 ·
Solving Tension of a Wire Problem
- dzidziaud
- · Replies 5 ·
Question on finding moment of inertia about the center of mass
- melizabeth
- · Replies 2 ·
Get the minimum taken to move from A to B given a cap on Velocity
- thejackal
- · Replies 3 ·
What Is the Net Inward Force on a Sinking Barrel?
- xxxzyon
- · Replies 2 ·
Two point charges connected by a massless rope
- KiNGGeexD
- · Replies 14 ·
Taipei 101 height change from thermal expansion of steel
- supernovaes
- · Replies 4 ·
Two dimensional projectile motion
- utkarshakash
- · Replies 6 ·
Electric field in all regions of infinite cylinder
- yayovio10
- · Replies 3 ·
LR Circuit Analysis: Find Current i When Switch is Opened
- utkarshakash
- · Replies 4 ·
How Do You Calculate Net Inward Force on a Submerged Barrel?
- xxxzyon
- · Replies 1 ·
Finding capacitance from charging time in RC circuit
- astro2525
- · Replies 16 ·
Understanding Prism Deviation Angle in Optics
- Shamim
- · Replies 2 ·
Momentum Problem involving minimizing collision impact
- Dethrone
- · Replies 5 ·
How Fast Must Earth Spin for Equatorial Weight to Be One Fifth of Polar Weight?
- Shauta
- · Replies 3 ·
Centripetal acceleration speeding car problem
- Dumbledore211
- · Replies 8 ·
Why Ignore the Magnetic Field in a Mass Spectrometer?
- darksyesider
- · Replies 1 ·
Electric Field of x-axis line of charge at the origin.
- fitzfool
- · Replies 4 ·
Plane Mirror Optics: Determining Minimum Mirror Size for Viewing Entire Image
- Speedking96
- · Replies 1 ·
Unicycle straight line motion/time dependent acceleration Problem
- chiamocha
- · Replies 9 ·
How Do You Solve the Freefall Catching Problem in Physics?
- chiamocha
- · Replies 3 ·
Work done by water vapor expanding as it heats from 25°C to 200°C
- Bgerst103
- · Replies 7 ·
Static equilibrium on diving board without rotational inertia
- student34
- · Replies 3 ·
Lagrangian of a rotating disc with mass attached
- albega
- · Replies 5 ·
Inserting iron core in an inductor coil
- utkarshakash
- · Replies 1 ·
Measuring parallel velocity in rotating frame.
- peripatein
- · Replies 30 ·
Finding Velocity in Car Collision Impulse Problem
- Bgerst103
- · Replies 8 ·
Find Time Constant for RC Circuit: Solve the Equation!
- utkarshakash
- · Replies 4 ·
Pressure from sand grains falling on paper
- Bgerst103
- · Replies 11 ·
Why is work zero when an insulated box reaches equilibrium?
- princejan7
- · Replies 3 ·
Mass hanging by spring tracing a eight shaped curve
- Saitama
- · Replies 4 ·
Negative work, positive work problems
- cuongbui1702
- · Replies 4 ·
How Does Compressing an Ideal Gas Affect Its Temperature?
- Bgerst103
- · Replies 3 ·
Can You Master Drawing Ray Diagrams for Prisms Using Snell's Law?
- Sayed Fahad
- · Replies 2 ·
Deriving wave equation with single string and small amplitude wave.
- BigDave11
- · Replies 8 ·
Bullet penetrating block A connected to block B by string
- Tanya Sharma
- · Replies 25 ·
Gauss's law on a charged sheet.
- pondzo
- · Replies 4 ·
Magnetic field and Induced Electric field inside a solenoid
- m0t0xk1d
- · Replies 1 ·
Quantum Mechanics , bra-ket , angular momentum eigenkets, eigenvalues
- binbagsss
- · Replies 9 ·
How Does Spring Mass Affect Its Behavior?
- Saitama
- · Replies 70 ·
Is electric field decomposable when detected by CCD?
- genxium
- · Replies 1 ·
Solving for Visible Light Reflection/Transmission: A Homework Help Guide
- Feodalherren
- · Replies 5 ·
Phase transitions in cooling gas at constant and variable pressure
- KiNGGeexD
- · Replies 4 ·
Thermal, steady-flow, table, continuity
- scrubber
- · Replies 2 ·
Boundary conditions don't apply in the equation's region of validity
- asaspades
- · Replies 4 ·
Gravitational fields - move from A to infinity
- Denul
- · Replies 2 ·
When is kinetic energy lost in elastic collisions?
- yolo123
- · Replies 3 ·
Resonance-The frequency of an applied force
- Woolyabyss
- · Replies 2 ·
Mechanical energy and momentum conservation
- yolo123
- · Replies 1 ·
What is the range of angles for total internal reflection in glass?
- nst.john
- · Replies 12 ·
Can Circuit Components Carry Uniform Current in These Diagrams?
- princejan7
- · Replies 2 ·
What is the temperature of the freezer based on the Ideal Gas Law?
- Bgerst103
- · Replies 7 ·
River crossing and relative velocities
- Egoyan
- · Replies 4 ·
Determine its speed immediately before landing
- calculator20
- · Replies 1 ·
Calculating Rotational Work on a Solid Cylinder
- Dethrone
- · Replies 15 ·
What Are the Alternatives to Silicon in Chip Manufacturing?
- henrywang
- · Replies 8 ·
How Do I Solve for L in an Inductance Equation?
- Loopas
- · Replies 1 ·
Relativistic addition of velocities problem
- 123456
- · Replies 4 ·
How to Solve an Elastic Collision of 3 Balls with Frictionless Motion?
- baubletop
- · Replies 6 ·
What is the concept behind Diffraction, n , Finding Dark/Bright Spots
- hbk69
- · Replies 10 ·
Thin lens equation and image formation
- castrodisastro
- · Replies 14 ·
Tension? knowing friction. I have the answer but need explaination
- Giiang
- · Replies 3 ·
Period of falling through asteroid vs orbit
- mintsnapple
- · Replies 3 ·