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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Sinking a toy boat with lead pellets
- brotherbobby
- · Replies 10 ·
Find the mass of the Sirius system
- Ithilrandir
- · Replies 8 ·
Mass on string landing on moving platform with pulley system
- Ithilrandir
- · Replies 45 ·
Magnetic permeability and optical impedance
- duchuy
- · Replies 1 ·
Stability of rigid body rotation about different axes
- Leo Liu
- · Replies 5 ·
Maximum acceleration given a breakable edge
- Combinatorics
- · Replies 18 ·
How Does Conservation of Energy Apply in This Physics Puzzle?
- greg_rack
- · Replies 5 ·
Net heat in a thermodynamic cycle
- Kaguro
- · Replies 2 ·
Angular Width Question in Single Slit Diffraction
- orangegalaxies
- · Replies 2 ·
Rolling ball inside a shell problem
- Hamiltonian
- · Replies 7 ·
Expressing horizontal velocity as a function of time for a wave
- JoeyBob
- · Replies 1 ·
Work done by gravitational force (new problem)
- momoneedsphysicshelp
- · Replies 9 ·
Why is my work calculation with normal force on an incline incorrect?
- momoneedsphysicshelp
- · Replies 13 ·
Wave propation -- Speed variation in different indices
- duchuy
- · Replies 4 ·
How Does Potential Energy Dissipation Affect Temperature in a Metal Cube?
- leo9999
- · Replies 9 ·
Kinematics: Analyzing circular motion of a particle
- Edward Hillsby
- · Replies 12 ·
Calculate time passed on a ship clock seen by Earth observers
- potatoleg
- · Replies 6 ·
Solving a Partial Derivative Problem Step-by-Step
- JoeyBob
- · Replies 5 ·
Acceleration of rising mass and tension in cord
- Ithilrandir
- · Replies 33 ·
Thermodynamics: Ideal gas model
- koddball
- · Replies 1 ·
Why does length contraction apply to electron rest frames?
- bq1892
- · Replies 2 ·
Wave problem - when they meet given their equations of motion
- JoeyBob
- · Replies 10 ·
Finding the x component of a vector given this angle
- Indras
- · Replies 4 ·
Finding the precession of a gyro using Euler's equations of rotation
- Leo Liu
- · Replies 2 ·
Solving Derivatives with the Chain Rule
- arhzz
- · Replies 8 ·
Solving for the velocity of a Pendulum
- momoneedsphysicshelp
- · Replies 2 ·
How Do Masses Move With a String Instead of a Spring?
- aiyiaiyiai
- · Replies 4 ·
Horizontal force F applied so the relative postion stays constant
- Ithilrandir
- · Replies 15 ·
Dampening Oscillation Spring Question
- JoeyBob
- · Replies 3 ·
Projectile launch angle and velocity verification
- Leejia
- · Replies 4 ·
Finding directions of fast axis to cause circular polarisation
- Kaguro
- · Replies 2 ·
Wave function for the Helium molecule
- LCSphysicist
- · Replies 4 ·
Calculating Net Force on an Electron using E(r) and mx
- CBA
- · Replies 9 ·
Scale height ##z_0## of atmosphere's density profile
- brotherbobby
- · Replies 2 ·
Solving for $$\omega_2$$ using Conservation of Angular Momentum
- Combinatorics
- · Replies 14 ·
Oscillation of a particle on a parabolic surface [equation of motion]
- happyparticle
- · Replies 40 ·
Damped Oscillation Amplitude Decrease vs. Mass Relationship
- JoeyBob
- · Replies 11 ·
Why is the coefficient two in the work done by friction equation?
- Leo Liu
- · Replies 1 ·
Finding natural frequencies from 3-mass coupled oscillator equations
- JoeyBob
- · Replies 11 ·
Oscillation Spring Dampening Find Frequency
- JoeyBob
- · Replies 1 ·
Concept of electric field and hollow conductors
- Kaguro
- · Replies 13 ·
Force and motion -- Person falling from 20m onto a cushion (EASY)
- guest948
- · Replies 3 ·
From spinor to ket space: Equivalents eigen equations
- LCSphysicist
- · Replies 1 ·
Prove that the derivative of the position vector equals the velocity vector
- winnie_d_poop
- · Replies 11 ·
Point mechanics -- Tension in a rope from a hanging mass
- duchuy
- · Replies 10 ·
A spring being compressed between two masses
- dahoom102
- · Replies 2 ·
Calculating Phase Difference and Interference with Laser Light
- duchuy
- · Replies 29 ·
Calculate the center of mass of a deformed hollow cone trunk
- Norashii
- · Replies 16 ·
Two masses on an incline at different angles
- bbal
- · Replies 8 ·
Position of piston related to ideal gas
- songoku
- · Replies 22 ·
Fluid dynamics calculation -- Draining a barrel through a pipe
- swiper122
- · Replies 1 ·
Induced current in a square coil by a current-carrying wire
- greg_rack
- · Replies 2 ·
Calculating Temperature Change in the Bullet and Block Problem
- avinhajo
- · Replies 29 ·
Arrow hitting a falling coconut dropped by a monkey
- songoku
- · Replies 17 ·
How Much Energy is Released When a Uranium Nucleus Captures an Electron?
- docnet
- · Replies 3 ·
Photoelectric effect with 500 nm wavelength on sodium
- docnet
- · Replies 4 ·
Separating a wave function into radial and azimuthal parts
- Nitram
- · Replies 2 ·
Speed of lighter ball after elastic collision with stationary object
- uberinferno
- · Replies 9 ·
What is the definition of Unit Optical Depth?
- AlphaCrucis
- · Replies 1 ·
Finding individual marble mass from group measurements
- orangegalaxies
- · Replies 80 ·
Area-change-rate of a coil generating a given induced current
- greg_rack
- · Replies 11 ·
Can't solve an equation (Deflection of electrons in electrostatic field)
- Caroline Stuart
- · Replies 29 ·
How is the Expansion of the Universe Related to Recession Velocity?
- jjson775
- · Replies 14 ·
Speed for loss of of contact between a dumbbell and a table
- A13235378
- · Replies 10 ·
Thermodynamics: gas expansion formula or approximation error?
- lucaud
- · Replies 2 ·
Positron-electron annihilation photon energy calculation
- Frostman
- · Replies 13 ·
Modeling Quantum State Evolution with Schrodinger's Equation
- LCSphysicist
- · Replies 3 ·
Harmonic Motion Problem - Finding oscillation of charges in a circuit
- JoeyBob
- · Replies 17 ·
What is the formula for determining small angles in spherical diopters?
- duchuy
- · Replies 6 ·
Upward and downward movement of a rocket with the equation of motion
- arhzz
- · Replies 13 ·
Electric field of a non-conducting cylinder at distance x
- MahalMuh
- · Replies 8 ·
Relativistic Relative Velocity Problem
- rtareen
- · Replies 4 ·
Harmonic Motion of a Mass between two springs
- JoeyBob
- · Replies 7 ·
Cannot understand author fully - Turbomachines
- SebastianRM
- · Replies 1 ·
Linear expansion of steel versus copper with increasing temperature
- Eerik
- · Replies 3 ·
Number of electrons emitted photoelectrically
- PhysicsTest
- · Replies 11 ·
To find the resultant of forces on a lamina
- gnits
- · Replies 5 ·
Using Faraday's Law to calculate the magnetic field
- Blanchdog
- · Replies 3 ·
Throwing Objects - Motion in Two Dimensions
- mustafamistik
- · Replies 24 ·
I don't understand the algebra in this answer
- pkc111
- · Replies 2 ·
Electric Field as potential gradient
- sep1231
- · Replies 2 ·
Gas Laws - pumped tires exploding at the top of a mountain
- i_love_science
- · Replies 19 ·
Runner's track distance error problem
- walking
- · Replies 7 ·
Is the Solution for Finding Hall Voltage Correct?
- PhysicsTest
- · Replies 19 ·
How Does Toughness Compare Between Brittle and Elastic Materials?
- shk
- · Replies 9 ·
Meeting of two bodies (cinematic)
- A13235378
- · Replies 6 ·
Dimensional analysis assumption
- walking
- · Replies 8 ·
Why Is the Uncertainty in a Cat's Weight Considered 1lb and Not 2lb?
- walking
- · Replies 5 ·
Manipulation of a Thermodynamic Relation
- Chetty
- · Replies 19 ·
Analyze the reaction in terms of constituent quarks
- jjson775
- · Replies 3 ·
Newton's Second Law of Motion -- Three masses, an inclined plane and a pulley
- mustafamistik
- · Replies 42 ·
Thermo: A Flat Tire and a Pressurized Tank
- Thyferra2680
- · Replies 1 ·
How the flow angle along the blade would change along the length
- t0mm02
- · Replies 29 ·
What is the relationship between surface tension and forces?
- arhzz
- · Replies 2 ·
Why does calculated power loss exceed transmitted power in transmission line problem?
- rdjohns12
- · Replies 9 ·
Tension force of a thread in a complex structure of six masless rods
- Kino Physics
- · Replies 9 ·
Change in Internal Energy in Accelerated Gas Chambers
- gianeshwar
- · Replies 3 ·
Time for a capacitor to discharge
- joeyjoey
- · Replies 6 ·
Finding spring compression and velocity on a trampoline using energy conservation
- orangegalaxies
- · Replies 16 ·