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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Identifying which region of a conductor experiences the greater force
- ellieee
- · Replies 3 ·
Sketch the Electric Field at point "A" due to the two point charges
- jbyolo101
- · Replies 6 ·
Why a lamp with X PD passes Y current
- moenste
- · Replies 23 ·
Why does a charged rod attract an uncharged metal sphere?
- JNOD
- · Replies 6 ·
What is the tension of the rope?
- Ebi
- · Replies 54 ·
Rifleman standing between two cliffs hears two echos from a single shot
- GforOevOerD
- · Replies 2 ·
Show that the given electric field is a plane wave
- Blanchdog
- · Replies 3 ·
Can I use the principle of conservation of energy for this problem?
- hendrix7
- · Replies 7 ·
Computing curl of E to verify Faraday's law with plane waves
- Blanchdog
- · Replies 3 ·
Multivariable Calculus proof for Optics
- Blanchdog
- · Replies 4 ·
Does Poiseuille's Law apply for vertical motion of fluids down a tube?
- g9WfI
- · Replies 2 ·
What is the relationship between pressure and flow rate?
- HystereeSis
- · Replies 8 ·
Load cable angle on a rotating crane with centripetal force
- Thickmax
- · Replies 4 ·
Collision between two uniformly moving particles
- brotherbobby
- · Replies 7 ·
Displacements in a system of two masses connected by three springs
- Istiak
- · Replies 16 ·
What happens if the normal reaction force is less than zero?
- goldfish9776
- · Replies 8 ·
How do I calculate the kinetic energy of a lifted wall?
- Thickmax
- · Replies 8 ·
Restrictions on the frame of reference
- yucheng
- · Replies 4 ·
Forces acting on a moving crane
- Thickmax
- · Replies 13 ·
Using virtual work to find the angle of a bar supported by two planes
- tomul
- · Replies 22 ·
Determining v from momentum / impulse
- g9WfI
- · Replies 2 ·
Velocity-distance graph for a freely falling body
- g9WfI
- · Replies 7 ·
Derivation of "arcsin" phase shift formula
- DeldotB
- · Replies 21 ·
Static lift: How to calculate the volume of displaced fluids?
- physiker278
- · Replies 25 ·
The Electric Field and Potential Energy in a Spring System
- Istiak
- · Replies 38 ·
Why is the value of EMF generated by a generator not zero at t = 0 s?
- songoku
- · Replies 2 ·
What is the perceived relative velocity of these two motorcycles?
- Badmeditator
- · Replies 12 ·
Finding distance between two points
- fcici7
- · Replies 4 ·
Compute relativistic addition of velocities
- Office_Shredder
- · Replies 1 ·
Force of water against a dam gate
- brotherbobby
- · Replies 29 ·
Magnetic field of a permanently magnetized cylinder
- LCSphysicist
- · Replies 8 ·
How to determine Refractive Index without using the Refractive Angle?
- jonas_28
- · Replies 3 ·
Change in heat and internal energy
- Ashshahril
- · Replies 3 ·
Finding light wavelengths from slit spacing and screen distance
- meher4real
- · Replies 18 ·
Newton's 3rd law question -- A gun firing a bullet
- samcoelho
- · Replies 2 ·
Magnetic field generated by a current in a wire - special relativity
- Frostman
- · Replies 1 ·
Equilibrium with the string in the center exactly horizontal
- Mcmenhweilleisi
- · Replies 6 ·
Gravitational Potential In the Field Caused by Two Masses
- BrandonInFlorida
- · Replies 12 ·
Motion in 2 dimensions -- Total displacememt of an ant walking
- danielsmith123123
- · Replies 10 ·
Can Spacelike and Timelike Points Undergo the Same Transformations?
- LCSphysicist
- · Replies 1 ·
Solving a collision question, is there enough information?
- pkc111
- · Replies 2 ·
Grade 11 physics and equivalent resistance
- danielsmith123123
- · Replies 3 ·
Is the potential energy of an ion in a lattice ##U_0## or ##U_0/2##?
- yucheng
- · Replies 9 ·
Griffiths Quantum Mechanics Problem 1.18: Characteristic Size of System
- yucheng
- · Replies 3 ·
Electrical circuit problem (resistors, capacitors, inductors )
- user1296
- · Replies 20 ·
Calculating Effective Coefficient of Thermal Conductivity
- songoku
- · Replies 10 ·
Calculation on spontaneous fission and effect from alpha decay
- Luxdot
- · Replies 23 ·
How Can I Analyze Particle Movement Given Potential Energy and Force Function?
- RubroCP
- · Replies 14 ·
I'm not understanding how to calculate the magnetic field of a sphere
- LCSphysicist
- · Replies 8 ·
Magnitude of the electric field?
- Eliasm
- · Replies 1 ·
What is the potential energy of a system with N cubes at equidistant heights?
- RubroCP
- · Replies 3 ·
Why is the direction in which the D.C. motor turns reversed here?
- ellieee
- · Replies 3 ·
Energy, work, power and efficiency when throwing a ball upward
- danielsmith123123
- · Replies 4 ·
Work, Power, Energy, Efficiency
- danielsmith123123
- · Replies 6 ·
Is ΔUL equal to ΔUR in this case?
- RubroCP
- · Replies 6 ·
Dynamics of a double atwood machine
- Aurelius120
- · Replies 9 ·
Correct statement about telescopes
- songoku
- · Replies 18 ·
What is the relationship between epsilon and sigma in multi-ferroic materials?
- Nickpga
- · Replies 23 ·
Calculating Potential Energy from Force for Non-Linear Systems
- RubroCP
- · Replies 4 ·
Strange question — Catapult launching a marble over an obstacle
- neilparker62
- · Replies 12 ·
Centripetal force on a person on the Earth
- barryj
- · Replies 32 ·
Question on problem 2.16 (a) of the Feynman Lectures (two-mass pulley)
- tomul
- · Replies 2 ·
Fields in a capacitor before and after adding a dielectric layer
- Wadah
- · Replies 10 ·
Find the center of gravity of a combined cone and cylinder
- gnits
- · Replies 7 ·
Why does mass double when wind speed increases from 60 to 120 mph?
- Shaye
- · Replies 6 ·
Thermal Expansion of a Triangular Frame
- SilverSoldier
- · Replies 2 ·
Electric field of wire and cylinder at one point in space
- uni98
- · Replies 5 ·
Finding the potential function of a vector field
- sylent33
- · Replies 6 ·
Moment of Inertia with varying distance from Centre of Mass
- Ang09
- · Replies 8 ·
Work done against air resistance from kinetic energy change
- g9WfI
- · Replies 2 ·
Existential dilemma on angular velocity of a complex rigid body
- bhupesh
- · Replies 25 ·
Resistance Differences: Nichrome vs. Copper Wire
- ellieee
- · Replies 3 ·
Faraday's law -- How is the RHS required for all surfaces?
- millo
- · Replies 2 ·
What does a comma mean in this equation?
- danielsmith123123
- · Replies 3 ·
Relationship between material mass and weight
- The apprentice
- · Replies 5 ·
Gravity's Pull: How Far is the Proton Above the Electron?
- Johann0101
- · Replies 2 ·
To find the weight of a hemisphere
- gnits
- · Replies 13 ·
How Do Charges Separate on the Second Ball in Electrostatic Induction?
- vcsharp2003
- · Replies 20 ·
Why does the DC motor diagram omit field direction at points A and D?
- ellieee
- · Replies 3 ·
Why is proper length smaller in the particle frame for length contraction?
- Fernando Rios
- · Replies 3 ·
Momentum in different referance frames
- Murilo T
- · Replies 6 ·
Vectors - Aircraft's velocity relative to ground
- g9WfI
- · Replies 2 ·
Heat dissipation in an 80W computer with 5 litre/second airflow
- StillAnotherDave
- · Replies 11 ·
Uncharged capacitors connected in series
- vcsharp2003
- · Replies 18 ·
When Does the Amplitude Drop to 1/5 in Damped Harmonic Motion?
- meher4real
- · Replies 11 ·
Get the mass of an argon atom and its molecular weight from Cv
- Ron_H
- · Replies 8 ·
Complex circuit and its resistance
- Pouyan
- · Replies 26 ·
Why Does the Official Key State X=2.05 Instead of X=1 in This Adiabatic Process?
- bhupesh
- · Replies 32 ·
Connecting two charged capacitors in series
- vcsharp2003
- · Replies 21 ·
What should I consider when sketching a vector field?
- arhzz
- · Replies 17 ·
Is it true that a phone uses more energy than a refrigerator?
- ellieee
- · Replies 25 ·
Stopping an electron beam between parallel plates
- meher4real
- · Replies 58 ·
Accelerating Rockets in Different Frames of Reference
- eden24
- · Replies 5 ·
Electromagnetism and the movement of particles
- ellieee
- · Replies 8 ·
Moment of inertia composite body
- antonov
- · Replies 11 ·
Finding displacement from velocity in a projectile motion problem
- g9WfI
- · Replies 5 ·
How Do You Solve Equations with Variables V, U, and T?
- g9WfI
- · Replies 10 ·
Modification of Wheatstone Bridge
- songoku
- · Replies 5 ·
Electric field outside a uniformly charged sphere
- eric11201120
- · Replies 3 ·
What would the angle φ be for this deflected laser beam?
- aracali
- · Replies 8 ·