Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Acceleration of a Block Sliding Down a Wedge
- Bling Fizikst
- · Replies 3 ·
Calculating velocity of a particle if distances are constant
- anthraxiom
- · Replies 11 ·
How to find motional emf w/o an equation for mag field?
- sequoiasprout
- · Replies 7 ·
Calculating the voltage across capacitors and resistors with switches
- radioglava
- · Replies 2 ·
Find V-I characteristic for this circuit with ideal diode
- zenterix
- · Replies 2 ·
Acceleration of the midpoint of a light rod
- Bling Fizikst
- · Replies 3 ·
Work Done in slowly pulling a thread
- Bling Fizikst
- · Replies 28 ·
Field of contact forces
- Manish_529
- · Replies 6 ·
Determine the Thevenin equivalent circuit
- zenterix
- · Replies 2 ·
Angular Momentum Problem: Mouse walking on a rotating turntable
- thebeegchung721
- · Replies 5 ·
Earthing of two parallel conducting plates
- palaphys
- · Replies 11 ·
Purcell 1.77 Electron jelly
- Rob2024
- · Replies 2 ·
How can voltage between unlike charges decrease with proximity?
- Brian_D
- · Replies 4 ·
Wave interference, "beats" problem
- Brian_D
- · Replies 19 ·
Aerodynamics of a helicopter blade
- mathisrad
- · Replies 4 ·
Which pairs of these diagrams represent equivalent circuits?
- syllll_213
- · Replies 4 ·
Catenary cable with balloon: finding horizontal tension and height
- mcastillo356
- · Replies 11 ·
Capacitor with dielectric material exercise
- Voidness
- · Replies 7 ·
Direction and magnitude of electric field produced by current change
- songoku
- · Replies 8 ·
Average battery current in battery charger
- Antoha1
- · Replies 7 ·
Questions about a capacitor with 4 parallel plates
- palaphys
- · Replies 14 ·
Drop of voltage between terminals while conductive rod is rotating
- Antoha1
- · Replies 5 ·
Motion puzzle: Bird flying between a train and a platform
- anthraxiom
- · Replies 84 ·
Debugging a Kelvin Water Dropper
- Silloky
- · Replies 10 ·
Electric displacement field density equation
- lys04
- · Replies 1 ·
Calculating of currents in a circuit
- Antoha1
- · Replies 2 ·
Force to move a 24 tonne truck one foot in one second
- Rev. Cheeseman
- · Replies 10 ·
Why does the propagation constant in the Helmholtz equation include j?
- baby_1
- · Replies 3 ·
Record Player Physics
- OutdoorInnovator
- · Replies 7 ·
Dielectric boundary value problems
- lys04
- · Replies 2 ·
Polarisation of dielectric materials
- lys04
- · Replies 5 ·
Capacitors, equipotentials, and electric fields
- palaphys
- · Replies 5 ·
How do you calculate the pull of this piston?
- vdance
- · Replies 27 ·
Coin sliding on a table slides across an expanding fabric tape
- yo yo
- · Replies 1 ·
Combined tensions of an RLC series circuit with AC current
- Thai777
- · Replies 3 ·
Terminal velocity and acceleration
- physicals
- · Replies 7 ·
Clarifying the Definition Total/Stagnation Pressure (p₀) in Bernoulli'
- John1704
- · Replies 2 ·
A particle's momentum in a magnetic field
- Antoha1
- · Replies 3 ·
Calculation of charge flowing through a loop
- Antoha1
- · Replies 7 ·
Height of the image of my friend on the film
- syllll_213
- · Replies 2 ·
Why Was My Answer of 63 cm for the Focal Length of a Converging Lens Incorrect?
- syllll_213
- · Replies 1 ·
Drone dragging a hose behind it
- ethanesh
- · Replies 24 ·
Torque biomechanics
- Naucus
- · Replies 6 ·
(Answer check) for a work problem
- helloword365
- · Replies 3 ·
Question related two different ways to do solution
- helloword365
- · Replies 1 ·
CO₂-powered metric racer car design for maximum speed
- sophiasxxn_134
- · Replies 14 ·
Force acting on one side of a fluid
- palaphys
- · Replies 22 ·
Confusion regarding surface tension direction and force balance
- palaphys
- · Replies 39 ·
Convert to Center of Mass Reference Frame
- rdemyan
- · Replies 9 ·
How far from the point of release will the ball hit the ground?
- Mohammad Ishmas
- · Replies 16 ·
Irodov 1.23 confusion: Calculate distance traveled and time elapsed for this decelerating particle
- anthraxiom
- · Replies 2 ·
What is force? How can we interpret the full definition of force?
- wondu12345ABCD
- · Replies 6 ·
Calculate velocities in COM reference frame for 2D collision
- rdemyan
- · Replies 27 ·
Inclined plane problem
- Vidrinho
- · Replies 13 ·
AP physics 2: Phase change in thin film interference
- AAONA
- · Replies 1 ·
Calculate the speed and angle of the center of mass before a collision
- rdemyan
- · Replies 3 ·
Mass oscillating on a vertical spring
- BadAtPhysic
- · Replies 2 ·
Friction direction change in a inclined circular bend (car on a road)
- pgirl1729
- · Replies 11 ·
Induced current and force on circular loop in varying magnetic field
- songoku
- · Replies 4 ·
Problem on Radiation Pressure
- Mohammad Ishmas
- · Replies 33 ·
Quick Physics Questions I found online and need explanations solving
- Candice123
- · Replies 10 ·
Calculate the energy transferred given the voltage, current and time
- GARV ARORA
- · Replies 5 ·
This 3 mass atwood problem is confusing me
- Thai777
- · Replies 4 ·
Left-to-Right Wave — How Does Particle X Move?
- Physical_Fire
- · Replies 23 ·
Computing the moment of inertia for a rotary inverted pendulum
- Remusco
- · Replies 5 ·
Ball on a string thrown around a spool
- kekpillangok
- · Replies 3 ·
Network Analysis, Kirchhoff's Laws, changing current source to voltage
- Emo_Jesus
- · Replies 4 ·
Graphs of RC Circuit Responses
- stunner5000pt
- · Replies 3 ·
The problem of one tube and two balls on a plane
- crazy lee
- · Replies 60 ·
Calculating the Forces on a Charge
- GodlessStar
- · Replies 7 ·
Ambiguous Problem Statement on Determining Speed of Aircraft
- vcsharp2003
- · Replies 13 ·
How does a transistor act as an amplifier?
- Aurelius120
- · Replies 6 ·
How do I find the intersection of the wrench's LOA?
- daisy7777
- · Replies 4 ·
Momentum: why don't the two carts become one?
- paulb203
- · Replies 32 ·
How to calculate the errors in the measured period of a pendulum?
- Lotto
- · Replies 6 ·
Series and Parallel Circuits using symmetry
- psandadi
- · Replies 10 ·
How is the slider connected to the switch?
- Physical_Fire
- · Replies 6 ·
Thermal expansion of a glass rod and a metal ruler
- Brightly
- · Replies 8 ·
A problem from a physics national competition
- Jim Alexandridis
- · Replies 13 ·
Change in entropy of the surroundings in an irreversible process
- palaphys
- · Replies 14 ·
Surface current of superconducting sphere in magnetic field
- Jan05
- · Replies 1 ·
Force of car pushing on a truck
- syllll_213
- · Replies 25 ·
Force needed to raise a backpack
- syllll_213
- · Replies 1 ·
Uniform circular motion angle relationship
- syllll_213
- · Replies 6 ·
Simulating a Rotary Inverted Pendulum in Python
- Remusco
- · Replies 15 ·
Pressure of water coming out of a hose nozzle
- mr_sparxx
- · Replies 7 ·
Focal length of the eyepiece lens in a compound microscope
- tellmesomething
- · Replies 7 ·
Find the magnitude of the child's acceleration
- chwala
- · Replies 7 ·
Why are these forces not included in the solution? (Torque Problem)
- mathandphysics
- · Replies 12 ·
Why do compasses always point in the wrong direction?
- ulrichburke
- · Replies 6 ·
Charge on disk with non uniform surface charge density
- songoku
- · Replies 12 ·
Optics problem with a glass lens immersed in water
- tellmesomething
- · Replies 3 ·
Can a rest frame be chosen for a system of two photons?
- sHimprinten
- · Replies 7 ·
1-dimensional kinematics - final velocity of 2 trains in opposing direction
- syllll_213
- · Replies 3 ·
Total energy of a wave on a string
- Brian_D
- · Replies 2 ·