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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How to Find the Path Function and Meeting Time for Three Moving Particles?
- Crystal037
- · Replies 14 ·
Can the planet core produce S waves?
- cooltu
- · Replies 2 ·
Is light from an asteroid visible to the naked eye?
- cooltu
- · Replies 4 ·
Coulomb's Law problem: Force of attraction between the two singly charged ions
- Special One
- · Replies 3 ·
Reducing the charge Q on an isolated charged conducting sphere to Q/8
- FranzDiCoccio
- · Replies 2 ·
Work and energy for a mass oscillating on a spring
- wobblegobble
- · Replies 1 ·
Why is W = 3/√2 kg for equilibrium in Feynman lecture 2.5?
- new90
- · Replies 32 ·
Work done on a conical pendulum
- brotherbobby
- · Replies 3 ·
Calculate the period of a ball bouncing between two walls
- Like Tony Stark
- · Replies 1 ·
The vector sum of the electric forces exerted on a particle
- msw1
- · Replies 3 ·
Two blocks connected with a small string pulled up a ramp by string
- TjGrinnell
- · Replies 3 ·
Electrostatics -- A charge oscillating through a charged plane
- Apashanka das
- · Replies 9 ·
Average speed and average velocity
- Kolika28
- · Replies 3 ·
The Attempt: Captured in a Photo
- Paris Geller
- · Replies 1 ·
Finding frequency and wavelength of waves on a string
- Riemannenthusiast
- · Replies 10 ·
Spectral lines from electron energy transitions in this atom
- Jeff97
- · Replies 12 ·
Work associated with polarization and magnetization
- dRic2
- · Replies 2 ·
What Is the Default Damping Value in PhET's Masses and Springs Simulation?
- jalex003
- · Replies 5 ·
What is the meaning of the Δi term in the equation ∑ficosΔi = 0?
- new90
- · Replies 12 ·
Two Leaning Sticks (Torque Calculation)
- Matt Raj
- · Replies 4 ·
Gauss' law -- Conductor with a cavity
- Physicslearner500039
- · Replies 4 ·
Finding enthalpy h3 for compressed liquid refrigerant at 1.2 MPa
- yecko
- · Replies 6 ·
Why Is My Calculation of Electrostatic Equilibrium Incorrect?
- cs44167
- · Replies 5 ·
Measuring Agreement Between Experimental Values of Constant k
- StillAnotherDave
- · Replies 17 ·
Power To Accelerate 1000kg Elevator Cab Upward
- Edel Crine
- · Replies 31 ·
Infinite Square Well with polynomial wave function
- Zack K
- · Replies 22 ·
"Superball" bouncing between two walls
- cpgp
- · Replies 9 ·
The periodic time of an elastic string's oscillation
- patric44
- · Replies 9 ·
Physics: Converging and Diverging Lenses
- casiocasio442
- · Replies 2 ·
Calculating System Work and Displacement of Center of Mass
- Edel Crine
- · Replies 15 ·
Conical pendulum: what are the tension and the angle?
- pkc111
- · Replies 4 ·
Galilean transformation equation sign convention
- billllib
- · Replies 11 ·
Three questions on fluid equilibrium from Sommerfeld lectures
- Adesh
- · Replies 8 ·
Electric resistance heater: 5.0 L/min water from 10°C to 45°C at 230V
- Detopall
- · Replies 9 ·
Radius of the electron orbit in a Hydrogen atom
- Bolter
- · Replies 15 ·
Polarization and Light Intensity
- jisbon
- · Replies 3 ·
Calculate the pressure using the Van der Waal equation on reduced variables
- il postino
- · Replies 6 ·
Can I determine the phase angle of this equation by using the sin function?
- nuclearfireball_42
- · Replies 5 ·
(Just checking) What's the total resistance?
- Special One
- · Replies 15 ·
Principle quantum number n of the excited state
- Bolter
- · Replies 2 ·
2.3 Exercises from the Feynman Lectures on Physics
- new90
- · Replies 33 ·
Confusion regarding signs in rotational motion
- Eggue
- · Replies 7 ·
Conundrums on energy and graphs
- aspodkfpo
- · Replies 5 ·
Evaluating an integral from Griffiths electrodynamics
- jaded2112
- · Replies 9 ·
Gauss Law Problem direction of Area
- Physicslearner500039
- · Replies 1 ·
How Do You Calculate Event Locations in Different Reference Frames in Physics?
- billllib
- · Replies 10 ·
Solving Math Problems: Tips & Tricks
- leslieM
- · Replies 5 ·
What Happens to Kinetic Energy of the Piston in an Isothermal System?
- Pendleton
- · Replies 21 ·
Finding mass in natural units with c = 1 and G = 1
- etotheipi
- · Replies 6 ·
How to Solve the Non-linear Differential Equation in Radial Ink Diffusion?
- tanaygupta2000
- · Replies 5 ·
USAPhO 2009 F=mA exam #25, (torque, rotational energy)
- Agrasin
- · Replies 20 ·
Pulling with and without a pulley
- brotherbobby
- · Replies 7 ·
Density from a viscosity experiment
- archaic
- · Replies 4 ·
Projectile motion while playing catch
- Daniel Luo
- · Replies 13 ·
Determine the points where the net magnetic field is zero
- jisbon
- · Replies 7 ·
Electric field and potential at square corners with charges +q, +2q, −5q, +2q
- Jackoyo
- · Replies 1 ·
Cylinder Rolling Down an Incline Without Slipping
- Leo Liu
- · Replies 7 ·
Torque on a rectangular coil in a uniform magnetic field
- Bolter
- · Replies 7 ·
The voltages across capacitors in series
- Josielle Abdilla
- · Replies 22 ·
A CAP question related to Van der Waals equation.
- aiyiaiyiai
- · Replies 1 ·
Echo travel time in air vs salt water near a cliff
- Evangeline101
- · Replies 10 ·
Solve for Echo Time in Saltwater and Air - Physics Problem
- bilalsyed25
- · Replies 5 ·
[Magnetism] Determine the direction of the force experienced by a (+)C
- Abood
- · Replies 2 ·
Find EMF of a battery in this circuit
- jdmaxwell02
- · Replies 3 ·
Finding final g and uncertainty from multiple pendulum measurements
- Zuvan
- · Replies 2 ·
Series of questions about Special Relativity
- billllib
- · Replies 4 ·
Do M1 and M3 have the same Acceleration?
- Andrax
- · Replies 9 ·
Upgrade Your Space with a High-Quality Leaning Ladder for Easy Concurrent Use
- IamVector
- · Replies 1 ·
Angular momentum of a system of a rotating rod and sliding rings
- Eggue
- · Replies 1 ·
Diffraction using a circular aperture
- Bolter
- · Replies 4 ·
Rayleigh criterion: finding the angular separation between 2 distant points
- Bolter
- · Replies 2 ·
A sticks to B but B doesn't stick to C: magnetic or iron?
- Abood
- · Replies 7 ·
Induced Charged on a Grounded Sphere
- Edward Candle
- · Replies 5 ·
Destructive interference near two speakers
- help I have 12 hours
- · Replies 1 ·
A diffraction grating formed by parallel adjacent tracks on a CDROM
- help I have 12 hours
- · Replies 1 ·
Motion of a Proton in Electric and Magnetic Fields
- Variable_X
- · Replies 26 ·
Angular position for 2nd order diffraction
- Bolter
- · Replies 1 ·
Simple Harmonic motion calculation for a mass on a spring
- Jshu
- · Replies 2 ·
Kirchoff's laws and capacitance
- Praveen1901
- · Replies 3 ·
Angular width of first-order visible spectrum
- Bolter
- · Replies 2 ·
Speed of sound related to absolute temperature
- Bolter
- · Replies 2 ·
Introductory application of the Newton Euler equations to a composite body
- Andrew1234
- · Replies 4 ·
Given these values, determine the mass of the Earth
- osakabosaka
- · Replies 6 ·
Standard deviation vs measurement uncertainty
- bluemystic
- · Replies 3 ·
Why is the n=1 energy in a semi-infinite well 9/16 that of an infinite well?
- StillAnotherDave
- · Replies 27 ·
Kirchhoff's law with three resistors and two batteries
- Bolter
- · Replies 5 ·
Thermodynamics Problem: Cylinder-Piston System with Friction
- MathError
- · Replies 4 ·
How to Calculate Molecular Diameter?
- new90
- · Replies 20 ·
Electric field direction on a grounded conducting sphere
- zapman345
- · Replies 4 ·
Proving the Wiener-Khinchin theorem
- mrMeister
- · Replies 3 ·
Why is my calculated steam mass 2.91 kg instead of 291 kg?
- sci0x
- · Replies 2 ·
Why does a uniformly charged sphere produce the same field as a point charge?
- Leo Liu
- · Replies 8 ·
Work Done By a Spring's Restoring Force
- rtareen
- · Replies 4 ·
Calculating Capacitance of Two Electrodes with Varying Distance
- StillAnotherDave
- · Replies 4 ·
Forces in three rods supporting a block
- IamVector
- · Replies 9 ·
Formula for calculating the wavelength of sound in interference
- HelpMeWithPhysics
- · Replies 10 ·
What does 'a distance L apart' mean?
- Special One
- · Replies 7 ·
Diference between cm^3 and cm^-3
- new90
- · Replies 4 ·
Is a mother carrying her baby doing work on the baby?
- kathrynisconfused
- · Replies 5 ·
Entropy and the Helmholtz Free Energy of a Mass-Piston System
- Pendleton
- · Replies 8 ·