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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Parameters and the nature of electromagnetic waves
- greg_rack
- · Replies 5 ·
How Does Deformation Affect the Net Force Between Two Masses?
- anonymous99
- · Replies 6 ·
Magnetic field of a straight current-carrying conductor
- PhysicsTest
- · Replies 3 ·
Chain pulled through a tube by hanging section
- NTesla
- · Replies 15 ·
Need to find forces in S1 and S2
- goodOrBad
- · Replies 5 ·
Finding the Monopole and Multipole Moments of the Electric Potential
- Athenian
- · Replies 1 ·
How to use efficiency in this problem
- robotman
- · Replies 2 ·
Potential Energy associated with a Variable Force
- robotman
- · Replies 2 ·
How can the weight force of a rigid body be applied in a moments equation?
- greg_rack
- · Replies 7 ·
Getting an imaginary number for initial velocity in rocket problem
- takelight2
- · Replies 4 ·
Period of a Pendulum on the Moon
- imccnj
- · Replies 7 ·
Efficiency of a hydroelectric power station
- greg_rack
- · Replies 6 ·
What equations relate to the symmetry of equipotential lines?
- Mimyo
- · Replies 3 ·
Instantaneous Acceleration for Uniform Circular Motion
- Error
- · Replies 1 ·
Instantaneous acceleration from coordinates?
- jalessandrom
- · Replies 5 ·
Does This Free-Body Diagram for a Forklift Make Sense?
- mcastillo356
- · Replies 38 ·
Will pressures and temperatures equalize in two connected gas tanks?
- A13235378
- · Replies 5 ·
Finding work done when compressing ice-water mixture in heat bath
- zemaitistrys
- · Replies 19 ·
Mass moment of inertia of a composite shape
- marcadams267
- · Replies 5 ·
Work done by three forces on an object sliding horizontally
- Travis Enigma
- · Replies 4 ·
Find the electric field intensity from an infinite line charge
- math132003
- · Replies 3 ·
Two blocks connected by a rope over a pulley
- goodOrBad
- · Replies 4 ·
Number of balloons that can be filled from a gas cylinder
- songoku
- · Replies 13 ·
Light ray reflecting off two mirrors at 135 degrees
- kspex2
- · Replies 10 ·
Young's Modulus and the Poisson Ratio of Aluminium
- EvilMarisa
- · Replies 1 ·
Feedback on the concepts surrounding pulley, ropes, friction
- goodOrBad
- · Replies 4 ·
Charge on a particle above a seemingly infinite charge plane
- Amay
- · Replies 2 ·
What is the significance of height in a vertical spring system?
- andrewasd
- · Replies 18 ·
Forces proportional to the sides of a quadrilateral result in a couple
- gnits
- · Replies 5 ·
How Do You Solve a Block on a Slope with a Given Weight?
- goodOrBad
- · Replies 7 ·
Understanding Energy Conservation in Quantized Angular Momentum Transitions
- jjson775
- · Replies 2 ·
Atwood machine calculation for launching a pebble
- dyn
- · Replies 7 ·
Ball on a rotating inclined plane
- EllaRuth
- · Replies 3 ·
Acceleration of a spring - mass system
- songoku
- · Replies 34 ·
Help with multiple choice physics questions
- nolife123
- · Replies 2 ·
Using Kirchhoff's laws on this current division problem
- curiosissimo
- · Replies 12 ·
Inserting a dielectric between the plates of a parallel plate capacitor
- archaic
- · Replies 5 ·
Drag force on a descending sphere
- Est120
- · Replies 6 ·
Electric field of an infinite plane with surface charge density
- bln1230
- · Replies 24 ·
Maximum speed on a banked curve with friction
- takelight2
- · Replies 5 ·
Minimum work needed to climb to the top of a peak
- derpydashie6167
- · Replies 2 ·
What velocity does the particle need to get to point B?
- ClearWhey
- · Replies 5 ·
Finding Minimum A for Equilibrium in a Two Block Problem
- goodOrBad
- · Replies 13 ·
Current through bulb vs coil in parallel LR circuit
- Anirudhhades
- · Replies 8 ·
Finding mass from normal forces at top and bottom of Ferris wheel
- takelight2
- · Replies 2 ·
Two Masses, a Pulley, and an Inclined Plane
- pkreilley
- · Replies 1 ·
Estimate the initial velocity of the cars after the collision
- peace
- · Replies 29 ·
Electrostatic energy of concentric shells
- Data Base Erased
- · Replies 11 ·
Finding equilibrium position between two point charges
- connor8771
- · Replies 10 ·
Pulley and Two Masses -- Newton's Law of Motion
- EvilMarisa
- · Replies 1 ·
Net electric force of multiple charged particles in 3-d space
- Edel Crine
- · Replies 12 ·
Intensity of Stars and the Inverse Square Law Problem
- AN630078
- · Replies 10 ·
Time period of a harmonic oscillator
- VVS2000
- · Replies 6 ·
Normalization of the wave function for the electron in a hydrogen atom
- jjson775
- · Replies 23 ·
Derivation of 3pt forward formula
- jkthejetplane
- · Replies 8 ·
What is Kepler's Formula and How is it Used in Circular Motion and Gravitation?
- Mongster
- · Replies 3 ·
Two masses connected by pulley on incline with block descending
- Mongster
- · Replies 7 ·
How do you derive the units for momentum for photons
- TheCelt
- · Replies 4 ·
How Do Electron and Proton Accelerations Compare Between Charged Plates?
- Sj4600
- · Replies 7 ·
Solve this integral involving a quadratic and linear air resistance equation
- happyparticle
- · Replies 30 ·
Solar panel power and radiation flux density calculations
- AN630078
- · Replies 35 ·
Non-constant acceleration, solving for velocity
- turtles123
- · Replies 11 ·
Are All 10 Ohm Resistors in Parallel?
- A13235378
- · Replies 3 ·
How far can the person climb up the ladder before it starts sliding?
- ClearWhey
- · Replies 7 ·
The motion of a charged particle in a magnetic field
- peace
- · Replies 9 ·
Electric Potential inside an insulating sphere
- baseballfan_ny
- · Replies 11 ·
Calculating resultant forces in physics lab report
- DanchoSuper
- · Replies 8 ·
Hydrogen Emission Spectrum and Electron Energy Levels
- AN630078
- · Replies 2 ·
Block A Reaches Equilibrium: 92N Force
- goodOrBad
- · Replies 5 ·
Photoelectric Effect Graph and Work Function Questions
- AN630078
- · Replies 25 ·
What's the car's acceleration at a specific point?
- Northern Cardinal
- · Replies 16 ·
Why does T₃ not depend on M₁ in this tension problem?
- Saptarshi Sarkar
- · Replies 4 ·
Seemingly a related rates problem
- archaic
- · Replies 11 ·
Relativity: Relativistic Kinematics and Dynamics
- fingerprintregion
- · Replies 1 ·
Electron moving to the face of plate from depth d
- rtareen
- · Replies 4 ·
Acceleration of masses with rope slipping around rod via Capstan equation
- Poetria
- · Replies 13 ·
Can nitrogen molecules escape Europa given rms speed and escape velocity?
- Sudikshya Pant
- · Replies 15 ·
What is the resulting force between the beam CB and E?
- ClearWhey
- · Replies 14 ·
Momentum and force multiple choice
- lpettigrew
- · Replies 1 ·
Maximum velocity of an electron emitted from lanthanum
- lpettigrew
- · Replies 11 ·
Why do cavities in red-hot coals appear brighter than the coals?
- LCSphysicist
- · Replies 9 ·
Calculating Time to Reach Highest Point in Theoretical Mechanics Problem
- MerS
- · Replies 4 ·
Contradiction in the formation of an electric dipole
- guv
- · Replies 2 ·
Gravitational Field Strength at the equator and poles
- AN630078
- · Replies 23 ·
Radiation pressure torque on a fiber with partial photon absorption
- LCSphysicist
- · Replies 1 ·
Finding the reqiured fuel mass for a nuclear reaction
- Practical_Fruit
- · Replies 1 ·
A ball thrown at an angle above an inclined plane
- tryingtolearn1
- · Replies 10 ·
Required time and distance calculation of a shock wave
- Edel Crine
- · Replies 29 ·
Precipitation, Runoff and Channel Flows on Titan
- julianscribner
- · Replies 1 ·
Energy of a configuration of two concentric spherical charged shells
- LCSphysicist
- · Replies 3 ·
Potential Energy and raising a satellite from Earth into a Circular Orbit
- AN630078
- · Replies 5 ·
Gravitational field strength, potential energy, and equipotential surfaces
- AN630078
- · Replies 5 ·
Force and change in momentum in an inelastic/elastic collision
- AN630078
- · Replies 19 ·
Equation for Fourth Force and its Line of Action?
- gnits
- · Replies 6 ·
Solving Transcendental in Wien's Displacement law
- dcarmichael
- · Replies 5 ·
Lost and in Need of Ideas for Finding Inspiration
- fer Mnaj
- · Replies 8 ·
Determining an object's velocity in cylindrical coordinates
- Marcis231
- · Replies 3 ·
Finding friction force with applied force at an angle
- zstraught
- · Replies 8 ·
Potential due to a rod with a nonuniform charge density
- archaic
- · Replies 2 ·