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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Current due to magnetic monopole passing through a wire loop
- versine
- · Replies 6 ·
Pressure change in pipe due to sudden closure of valve
- phantomvommand
- · Replies 1 ·
Finding the potential difference between 2 points in a circuit
- ellieee
- · Replies 6 ·
[Electrical force] 2 balls hanging from ceiling, angled
- sea333
- · Replies 35 ·
Understanding Spherical Symmetry of Electron Clouds in External Fields
- versine
- · Replies 1 ·
[Electrical force] 2 balls hanging from ceiling
- sea333
- · Replies 40 ·
What is the Role of Torque in Holding a Sphere Against a Wall?
- vibha_ganji
- · Replies 5 ·
Input Resistance of this BJT Amplifier
- IronaSona
- · Replies 12 ·
[Electrical force] Electrical charge in equilateral triangle
- sea333
- · Replies 12 ·
Swinging a hanging copper ring with a bar magnet
- versine
- · Replies 6 ·
Electron acceleration between charged plates giving unrealistic speed
- Jrads
- · Replies 2 ·
Force Diagrams for a Combined Mass
- rmiller70015
- · Replies 5 ·
Gauss's Law application in Electrostatics
- vcsharp2003
- · Replies 1 ·
Magnitude of electric field E on a concentric spherical shell
- vcsharp2003
- · Replies 17 ·
How to Derive the Range of a Projectile on an Inclined Plane?
- Redwaves
- · Replies 9 ·
What Causes Overcharging and Excess Voltage in Car Batteries?
- versine
- · Replies 3 ·
Force on a dipole in a non uniform electric field
- Shreya
- · Replies 14 ·
How can I convert units correctly?
- lb beatz
- · Replies 1 ·
Flux density and Divergence of Electric field
- Shreya
- · Replies 2 ·
Extended thinking problem from textbook
- This Is Me
- · Replies 9 ·
Electron motion after collision in a magnetic field
- jjson775
- · Replies 12 ·
How Is Ampere's Law Applied to Calculate Magnetic Fields?
- This Is Me
- · Replies 3 ·
Why does integrating from R to r give opposite signs in two methods?
- phantomvommand
- · Replies 7 ·
Hiking the Appalachian Trail: A Beginner's Guide
- ayans2495
- · Replies 3 ·
Kinetic and potential energy of a particle attracted by charged sphere
- fatpotato
- · Replies 6 ·
Signs of the voltage drops in this LC Circuit
- LCSphysicist
- · Replies 2 ·
Why Does the Trigonometric Function in the FEM Calculation Differ?
- LCSphysicist
- · Replies 3 ·
Rear Clock Ahead Effect (Special Relativity)
- PhDeezNutz
- · Replies 6 ·
Cutoff frequency for this RLC circuit
- IronaSona
- · Replies 12 ·
Maintaining Component Temperature with Water Bath
- river928323
- · Replies 4 ·
Speed of train car when sand spilling out from it
- songoku
- · Replies 17 ·
The work that is necessary to pull a hanging chain
- Rikudo
- · Replies 6 ·
Finding Specific Heat of a solid
- sarahjohn
- · Replies 4 ·
Design a linear phase low pass filter
- R4721s
- · Replies 6 ·
Measuring the length of a moving Beam in two different directions
- kimiko333
- · Replies 44 ·
Time dilation for a simple problem — Light propagating inside a moving bus
- name
- · Replies 12 ·
I to start with this Rotations problem
- Sarah2325
- · Replies 11 ·
Speed and apparent weight of person in reverse bungee jumping
- songoku
- · Replies 9 ·
Tension of string acting on stone moving in horizontal circular motion
- songoku
- · Replies 19 ·
Kinematics problem -- Calculating where a dropped stone will hit a car
- physicslover12
- · Replies 5 ·
Why Does Momenergy Have a Magnitude Equal to Mass?
- Ashshahril
- · Replies 2 ·
Finding the period of pulley system
- songoku
- · Replies 22 ·
How to Visualize a 4 vector (e.g. a velocity)?
- Ashshahril
- · Replies 1 ·
Quality of an oscillating electron
- PragmaticYak
- · Replies 2 ·
River Boat Problem: Minimizing Travel Time
- this_is_harsh
- · Replies 2 ·
Logs sliding in a pickup truck that stops suddenly
- ellieee
- · Replies 12 ·
Passengers in Sudden Plane Vertical Drop: Effects
- ellieee
- · Replies 25 ·
What is the difference between electric flux and electric flux density?
- Shreya
- · Replies 6 ·
Is my interpretation of the Atwood's Machine problem correct?
- KingBreak
- · Replies 8 ·
Force on pulley with two masses and normal force
- vibha_ganji
- · Replies 1 ·
Finding frequency of microwaves
- songoku
- · Replies 14 ·
Calculate the volume change with gas temperature for this piston in a cylinder
- Istiak
- · Replies 15 ·
How do I plot phase difference in LTSpice for a circuit?
- IronaSona
- · Replies 1 ·
Degeneracy of the energy level
- hidemi
- · Replies 6 ·
Finding the voltage of the circuit (resistor ladder)
- deskochan
- · Replies 10 ·
Opposite Induced Currents in Circuit Explanation
- ellieee
- · Replies 2 ·
Finding path difference of EM waves received by radio telecopes
- songoku
- · Replies 3 ·
Solid angle in an optics problem (artificial irradiance of the Earth)
- baseballfan_ny
- · Replies 15 ·
Finding electric field at a point between two charges
- Thickmax
- · Replies 13 ·
Finding time t in Atlantic plane flight kinematics
- Thickmax
- · Replies 25 ·
Centripetal Acceleration grade 12 (forces on a bird pulling out of a dive)
- Physicsstudent2
- · Replies 7 ·
Do I need an upward force in a free body diagram for accelerating masses?
- Physicsstudent2
- · Replies 6 ·
Work done by 100 N force on 4 kg block pulled at 60 degrees
- ZurraMath
- · Replies 4 ·
Explain the Schrodinger equation
- Huzaifa
- · Replies 3 ·
Expression for the magnitude of an electric field
- mousey
- · Replies 5 ·
Can I shift a wave by 2π to get the opposite phase?
- Thickmax
- · Replies 8 ·
Magnetic field - General current in a cube
- pieuler
- · Replies 4 ·
Struggling to find solution to 1D wave equation in the following form:
- Ibidy
- · Replies 8 ·
Relation between Electric field and Magnetic field?
- Gaurav
- · Replies 12 ·
Equilibrium of a stiff plate on inclined planes
- aang
- · Replies 45 ·
Is Fgy the Same as FN in a System with Two Masses and Friction?
- danielsmith123123
- · Replies 5 ·
A.C. generator -> why does the current reverse?
- ellieee
- · Replies 2 ·
Time Dependence of Wave Function
- sarahjohn
- · Replies 2 ·
Infinite Square Well with Multiple Particles
- sarahjohn
- · Replies 2 ·
How to Calculate Heat Generated on R2 After Finding Voltage and Charge?
- aang
- · Replies 10 ·
Equilibrium of rectangular plate on two inclines at 90° angle
- thevinciz
- · Replies 31 ·
Mean Free Path (Introductory Thermal Physics)
- warhammer
- · Replies 8 ·
Eddy currents in electromagnetic train
- Einstein44
- · Replies 3 ·
Finding current in RLC series circuit at 1 kHz
- IronaSona
- · Replies 2 ·
Rail Car with a Sail in the Wind
- MaratZakirov
- · Replies 36 ·
Net electrostatic force between three charges
- mousey
- · Replies 11 ·
Average acceleration of an arrow by a bow
- rxhim631
- · Replies 2 ·
Trouble with Plasma Frequency Calculation
- Blanchdog
- · Replies 5 ·
Number of ways for total spin-1
- tanaygupta2000
- · Replies 5 ·
Gr. 12 Dynamics -- A performer being lifted up by two ropes
- danielsmith123123
- · Replies 8 ·
Determine the direction of a spin state given the state
- Foracle
- · Replies 6 ·
Difference between N/m^2 and N/m^-2
- elecone
- · Replies 2 ·
Average acceleration of a car changing speed and direction
- danielsmith123123
- · Replies 1 ·
Can you use speed and velocity interchangeably?
- ellieee
- · Replies 5 ·
When an object is accelerating, does speed, velocity, or force change?
- ellieee
- · Replies 2 ·
Calculate number of photons absorbed
- Luxdot
- · Replies 56 ·
Identifying which region in the conductor experiences a greater force
- ellieee
- · Replies 3 ·
Projectile motion problem (moving ships firing a projectile)
- Istiak
- · Replies 6 ·
A mass collides with an inclined plane
- Rikudo
- · Replies 15 ·
How Does Vorticity Relate to Blood Flow Dynamics?
- ELLE_AW
- · Replies 2 ·
Standing waves between two speakers in phase
- MaherJ
- · Replies 15 ·
Light bulb brightness with AC supply
- ellieee
- · Replies 12 ·
How long does it take for the disk to stop rotating?
- Istiak
- · Replies 12 ·
Find the center of mass of an arc
- Istiak
- · Replies 3 ·
How Does a Ping Pong Ball Behave in Zero Gravity?
- robax25
- · Replies 23 ·