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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Finding the position where the electric field is zero
- JohnnyLaws
- · Replies 2 ·
Find the partial diameter error of the surface area of cylinder
- abobik
- · Replies 3 ·
Charge density in sphere that makes constant radial E-field inside
- prosteve037
- · Replies 14 ·
Car overtaking with constant acceleration at 2.0 m/s²
- Syw
- · Replies 22 ·
Force exerted on block B by Block A when being pushed on a frictionless surface
- yashboi123
- · Replies 3 ·
Question(s) Regarding Magnitude of Force (Window Washer Problem)
- mazia
- · Replies 3 ·
Change in volume of sphere with change in temperature
- MatinSAR
- · Replies 19 ·
Q： Why is it a reversible adiabatic process but not isentropic?
- tracker890 Source h
- · Replies 9 ·
Is the Photoelectric Effect Proof That Light Is a Particle?
- sss1
- · Replies 35 ·
Tension in cable D is equivalent to the tension in cable B?
- yashboi123
- · Replies 8 ·
Sequences of measurements in quantum mechanics
- ellenb899
- · Replies 9 ·
Is the normal force at the top of a rollercoaster loop always directed upwards?
- mancity
- · Replies 5 ·
Foucault Pendulum at the North Pole
- Hak
- · Replies 9 ·
What is the Largest Quantum Number for Li3+ with a 60 Å Orbital Radius?
- hassony
- · Replies 2 ·
Why is momentum equal to mass times velocity?
- logicgate
- · Replies 7 ·
Potential at a point inside a solid non conducting uniformly charged sphere
- Rhdjfgjgj
- · Replies 4 ·
Why is there are precession frequency here?
- simphys
- · Replies 1 ·
How Does Centripetal Force Influence the Flight of a Rubber Band?
- Anonim2831
- · Replies 6 ·
Calculating relative velocity -- Jumping between two moving trains
- verkamp
- · Replies 3 ·
Ohm's Law confusion -- How to handle an incandescent bulb?
- hendrix7
- · Replies 7 ·
Calculating Torque on this Square
- Addie M
- · Replies 20 ·
The velocity of a satellite rotating around the Earth
- yashboi123
- · Replies 3 ·
Net displacement with signed distances: which formula to use?
- Remle
- · Replies 6 ·
Brightness of two lamps in a circuit having a changing magnetic field
- songoku
- · Replies 10 ·
Which material has the greatest Young's Modulus?
- songoku
- · Replies 2 ·
How many discs will slide off the board as it decelerates?
- Lotto
- · Replies 17 ·
Correct energy transformation about circuit with EMF, a resistor and a motor
- songoku
- · Replies 11 ·
Momentum in a Head-on collision
- Rayan
- · Replies 2 ·
Wave reflection when rope connects to stiffer rope
- AsemEzzat
- · Replies 22 ·
Assistance in cutting down unneeded information in physics report
- mostafaelsan2005
- · Replies 7 ·
2 masses connected by spring, one is pulled, how much does the spring stretch?
- Obliv
- · Replies 3 ·
Questions about speed and motion of a toy car on a conveyor belt
- Tonyapplepan
- · Replies 11 ·
Diffrence between resolving vector to components and find projections
- Mohmmad Maaitah
- · Replies 4 ·
Two Equations for Average Velocity?
- Spooky123
- · Replies 2 ·
Do two cars stop before colliding in 3.2 and 5.1 seconds?
- valleyldp
- · Replies 13 ·
How can a transistor behave as a switch in the saturated region?
- sachin
- · Replies 5 ·
Electric field in a second dielectric given a 2 dielectric system
- willDavidson
- · Replies 2 ·
Atwood at an incline accelerating down
- Enginearingmylimit
- · Replies 2 ·
Coherent interference at a low photon flux rate
- tistemfnp
- · Replies 3 ·
Ball bouncing off wall: impulse and collision deformation
- Aerisk16
- · Replies 1 ·
What is the rocket's initial acceleration?
- JoeDGreat
- · Replies 6 ·
Working mechanism of straws and siphon
- sss1
- · Replies 1 ·
Magnetic field in a solenoid with rectangular cross-sectional area
- Hak
- · Replies 25 ·
Calculations involving different Dielectrics and Capacitors
- as2528
- · Replies 7 ·
Why Does Torque Equilibrium Not Solve for Fcy in Static Equilibrium Problems?
- Sunwoo Bae
- · Replies 9 ·
Rod at rest in S' making different angles in two frames
- James Chase Geary
- · Replies 6 ·
Why can a fluid that satisfies the continuity equation cross streamlines?
- tracker890 Source h
- · Replies 14 ·
Finding inner and outer surface charge density of a shell using Gauss' law
- Wmdajt
- · Replies 4 ·
What force is needed to break a rope?
- Lotto
- · Replies 8 ·
Particle experiencing only an angular force, determine the r dot
- flinnbella
- · Replies 15 ·
A circuit involving two non-linear resistances (incandescent lamps)
- Jan Vesely
- · Replies 14 ·
Q: Confusing Conservation of Mass Flow Rate and Conservation of Flow Rate
- tracker890 Source h
- · Replies 19 ·
Why Was My Thread Closed on the Physics Forum?
- imbumb
- · Replies 22 ·
Is My Approach to Calculating Relative Velocity Correct?
- Aurelius120
- · Replies 20 ·
Difficulty in deciding when to apply work energy theorem
- physicsissohard
- · Replies 2 ·
Rydberg constant for hydrogen atom and Balmer series
- sss1
- · Replies 2 ·
Work done by gravity on a car rolling down a hill
- physicsmaster123
- · Replies 4 ·
Basketball thrown straight up from the ground
- yashboi123
- · Replies 1 ·
Why does air exit the system if its mass stays constant?
- tracker890 Source h
- · Replies 9 ·
Problem with when to use Force and Energy. What compresses spring/
- physicsissohard
- · Replies 3 ·
Interpreting velocity and acceleration terms in rotating reference frames
- Master1022
- · Replies 2 ·
Fresnel equations for light at diamond-air interface
- Davidllerenav
- · Replies 5 ·
Estimating Error in Wavelength from Graphical Approach
- PhysicsRock
- · Replies 11 ·
What will the final velocity of the particles be?
- Lotto
- · Replies 7 ·
Faraday's law -- Confusion about which Area to use in calculations
- yymm
- · Replies 3 ·
Switching reference frames between two intersecting lines
- John3509
- · Replies 10 ·
Why is there no acceleration in the southern/y direction?
- yashboi123
- · Replies 10 ·
Coaxial semi-infinite solenoid and superconducting disc
- Hak
- · Replies 39 ·
I need feedback on MCQ test in IJSO style
- AlexJicu08
- · Replies 26 ·
Ratio of Excited Neon Atoms in 5s compared to 3p
- jjson775
- · Replies 4 ·
What force is needed to push out this slab on the bottom of the stack?
- Lotto
- · Replies 10 ·
What is the Resultant Force from adding these two forces?
- DIANAWIELT
- · Replies 20 ·
Explain the phenomenon of decrement of angular momentum
- AyushNaman
- · Replies 3 ·
Why is my gravity acceleration measurement only 4.68 m/s²?
- feynmansorange
- · Replies 7 ·
Consideration of number of significant figures in experimental quantities
- f3sicA_A
- · Replies 6 ·
Converting 1672 MeV to mass in kg using E=mc²
- Saibot
- · Replies 8 ·
Verification of ideal gas law experiment
- Voltux
- · Replies 5 ·
Calculating components of a third-quadrant vector
- Joe_mama69
- · Replies 2 ·
Standard angles for vectors (Mechanics)
- Joe_mama69
- · Replies 4 ·
Calculate the torque that is produced by this force on a cylinder
- MatinSAR
- · Replies 5 ·
Inductance Puzzle involving coplanar conducting rings
- Hak
- · Replies 5 ·
The theory behind sound generation from spinning objects
- Juan2g19
- · Replies 7 ·
Box on treadmill connected to a spring
- MigMRF
- · Replies 8 ·
I need opinions on a Projectile Motion problem that I made up
- AlexJicu08
- · Replies 11 ·
How Does Lenz's Law Explain the Jumping Ring Phenomenon?
- sss1
- · Replies 8 ·
Resolving Velocity Components in Constrained Motion
- decentfellow
- · Replies 6 ·
Charge repelling a mass on a frictionless incline
- DanielGuh
- · Replies 9 ·
What is a Solid Angle and How is it Calculated?
- j04015
- · Replies 22 ·
Needs clarity on this displacement vector diagram
- Chijioke
- · Replies 3 ·
RLC circuit resonance experiment
- Shreya
- · Replies 10 ·
Accelerating pulley upward at g as equivalent to gravity
- physicsissohard
- · Replies 1 ·
Problem with Dynamic blocks on a fixed inclined plane
- physicsissohard
- · Replies 10 ·
Why are they using Cosine instead of Sine for Cross Product?
- yashboi123
- · Replies 2 ·
When does the car overtake the runner in a kinematics problem?
- Physics_is_beautiful
- · Replies 5 ·
How much work is done to hold a book at a constant height?
- ktsa
- · Replies 10 ·
Are the Battery Capacity Calculations for Electric Vehicles Correct?
- PhysicsTest
- · Replies 4 ·
About critical damping resistance of a ballistic galvanometer
- phymath7
- · Replies 6 ·
Statics problem on the resolution of forces
- CIA16
- · Replies 18 ·
Olympiad question on destructive interference
- Glenn G
- · Replies 3 ·