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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Series parallel capactitive circuit
- freshbox
- · Replies 32 ·
How to show force R^2=(Q-24)^2 + 7^2
- physicshawk
- · Replies 8 ·
Rotating Bucket Dynamics: Oil vs. Water Surface Shapes
- rbwang1225
- · Replies 5 ·
I with an AP Physics Momentum/Collision problem
- akitokunx
- · Replies 4 ·
Gravitational attraction question
- physninj
- · Replies 1 ·
Calculating Resistance and Power in a Simple Circuit
- warnexus
- · Replies 5 ·
Finding Rotational Kinetic Energy of Sphere on Ramp
- joel amos
- · Replies 6 ·
Calculating Current and Resistance: "17V, 3C, 25J
- warnexus
- · Replies 2 ·
(easy) Finding variables with mirror equation
- classi
- · Replies 2 ·
Find Stored Energy - 8uF, 1uF, 50V
- warnexus
- · Replies 3 ·
Projectile thrown so distance from launch point always increases
- Phys student
- · Replies 17 ·
Tension in a pendulum rope at 20 degrees
- PhoniexGuy
- · Replies 6 ·
Finding the point where gravitational forces on a satellite balance
- mtayab1994
- · Replies 6 ·
How long does it take for the sound to travel a known distance in a well?
- Confusedkid34
- · Replies 9 ·
Three Blocks Attached by Strings
- Bashyboy
- · Replies 12 ·
RL and RC filter phase angle formulas
- unscientific
- · Replies 18 ·
Integration of an equation by hand
- Hannibal123
- · Replies 2 ·
Why Is Work Done by Gravity Zero for a Satellite in Orbit?
- Bashyboy
- · Replies 15 ·
Which one of these 3 graphs represents Hooke's law?
- JayLu8173
- · Replies 1 ·
Finding general solution of motion of forced harmonic oscillator
- Redgal
- · Replies 1 ·
Why simple series-parallel rules fail for this resistor network
- carlos125
- · Replies 5 ·
Car speeding up around a circle
- ooccoo
- · Replies 5 ·
Solving for x in energy conservation equation
- nchin
- · Replies 1 ·
Elastic collision: why does mass cancel in momentum conservation?
- nchin
- · Replies 3 ·
What is the area of a receiving antennae with an angular spread of θ = λ/d?
- Biosyn
- · Replies 1 ·
Solving Collision and Kinetics Problems in 2D
- doub
- · Replies 1 ·
Why does mass cancel in elastic collision momentum equation?
- nchin
- · Replies 1 ·
Finding the Thickness of Polystyrene in a Capacitor
- warnexus
- · Replies 11 ·
A boat moving because of the wind
- sapz
- · Replies 4 ·
How Do You Determine the Coefficient of Friction Between Two Sheets of Paper?
- huymai
- · Replies 7 ·
Mass connected with three springs-Oscillations
- Tanya Sharma
- · Replies 13 ·
Velocity equation for quadratic drag, vertically thrown
- Hannibal123
- · Replies 4 ·
Solve Vector Car Problem: Find Mag & Dir of Displacement
- Violagirl
- · Replies 1 ·
Optics Problem (Curved Mirror + Lens)
- D__grant
- · Replies 8 ·
Isolating r in the gravitational force formula
- Apollinaria
- · Replies 21 ·
Finding total resistance between points A and B
- warnexus
- · Replies 5 ·
Differential equations of motion
- aiisshsaak
- · Replies 1 ·
How Can Calculus Determine the Velocity on a Zip Line?
- trest
- · Replies 11 ·
Calculating Tension in a Rope for a Slowing Object
- badshar
- · Replies 2 ·
Projectile motion: cliff impact at 5.5s with component breakdown
- Apollinaria
- · Replies 5 ·
What type of energy is the e in mass–energy equivalence equation?
- Esoremada
- · Replies 2 ·
Conservation of momentum theory question
- Apollinaria
- · Replies 6 ·
Is My Flow Rate Calculation Correct?
- Ross891
- · Replies 4 ·
Ferryboat crossing river with 4 m/s speed and 3 m/s current
- L_0611
- · Replies 1 ·
String vibrating in third overtone causes pipe resonance
- murrskeez
- · Replies 5 ·
Intense physics question, mix of radioactive decay and electromagnetism
- skg94
- · Replies 4 ·
Basic DC Circuit/Kirchoff problem with 2 power supplies
- wellcoughed
- · Replies 6 ·
Change in speed of the bullet after striking an object
- omc1
- · Replies 7 ·
When to use cos vs sin for torque in equilibrium problems?
- nchin
- · Replies 2 ·
Force with friction, pulleys and cords
- saructk
- · Replies 5 ·
What is total equivalent resistance and power dissipated?
- Apollinaria
- · Replies 29 ·
How Do You Calculate Momentum and Kinetic Energy of a Moving Truck?
- ChessFanatic
- · Replies 3 ·
Using Cramer's Rule to find needed equations
- Final9mare
- · Replies 1 ·
How to find applied force when given force of friction (constant velocity)
- HelloImAsh
- · Replies 4 ·
Cylinder pulled by string rolling without slipping friction
- nchin
- · Replies 2 ·
Help with calculus problems for tomorrow's test
- Scofield001
- · Replies 3 ·
Relativity Q / Characteristic decay times
- CAF123
- · Replies 5 ·
Concentric infinite conducting cylindrical shells, outer one grounded
- CaptainP
- · Replies 5 ·
Equation of velocity with quadratic drag, vertical throw
- Hannibal123
- · Replies 8 ·
Are the 1-ohm and 3-ohm resistances in series in this circuit?
- carlos125
- · Replies 8 ·
How to find the magnitude of the electric field?
- Apollinaria
- · Replies 13 ·
How to find the speed of an ion using V, T, m, q?
- Apollinaria
- · Replies 8 ·
Why does the Coriolis acceleration have a minus sign?
- Curious2013
- · Replies 3 ·
Mass of cylinder from hanging weight fall time
- doub
- · Replies 3 ·
Elastic collisions of a moving ball hitting a stationary ball
- doub
- · Replies 13 ·
Why Is PET Imaging Contraindicated for Patients with Titanium Dental Implants?
- BrnoStudent
- · Replies 1 ·
Centripetal Force - trying to find time
- cdornz
- · Replies 8 ·
Terminal Velocity of a Ball Given Velocity and Acceleration
- blradlof
- · Replies 9 ·
Diffusion of Fick's Law and Young's modulous
- yeung2743
- · Replies 1 ·
Simple Harmonic Oscillation on a guitar string
- kgal
- · Replies 10 ·
Time for 212 g of water to boil in a 1219 W microwave
- yaylee
- · Replies 3 ·
Flow velocity at midpoint of conical nozzle
- Ross891
- · Replies 17 ·
Field lines on parallel plates with same charge
- mrcotton
- · Replies 3 ·
How do you determine 'r' in Torque calculations?
- PhizKid
- · Replies 1 ·
Simple Harmonic Motion Problem 4
- thunderhadron
- · Replies 38 ·
Moment of inertia and Atwood Machine
- doub
- · Replies 3 ·
Sound waves question - vibrations and amplitudes
- FlorenceC
- · Replies 13 ·
Dynamics- effect caused be angle, friction
- PRITEC
- · Replies 2 ·
Isobaric Process, finding Change in Internal Energy
- yaylee
- · Replies 2 ·
Rocket Equation and Orbit questions?
- picklepie159
- · Replies 4 ·
Isobaric Process: Finding Q, E, W.
- yaylee
- · Replies 1 ·
Expectation value of momentum times position particles in a box
- adebola1
- · Replies 1 ·
Conceptual difficulties with the generation and description of EM waves
- ak71
- · Replies 1 ·
Latent Heat + Specific Heat Problem
- yaylee
- · Replies 3 ·
Which angle do I need for the torque?
- PhizKid
- · Replies 6 ·
Odd result in simple mechanics problem
- gsmith
- · Replies 3 ·
Calculating Current in a Series Circuit
- warnexus
- · Replies 4 ·
Finding the radius for torque from a cable
- PhizKid
- · Replies 6 ·
At What Point Does the Boy Lose Contact with the Ice?
- NilliNilli
- · Replies 9 ·
Tangential acceleration, Inertia, and Torque
- JLPG
- · Replies 23 ·
What will be the velocity of flow ?
- BrnoStudent
- · Replies 11 ·
Monatomic gas, Isochoric Process.
- yaylee
- · Replies 3 ·
Total mechanical work, solving for x
- Nano-Passion
- · Replies 2 ·
Calculating the Initial Height of a Hailstone for Complete Melting on Impact
- DLH112
- · Replies 6 ·
Calculating Heat Transfer in a Cavity Block Wall with Windows
- Darth Frodo
- · Replies 4 ·
Max distance up incline plane with variable friction
- PhizKid
- · Replies 5 ·
How to work with non-constant forces?
- PhizKid
- · Replies 5 ·
Gravitational Force of a Point Particle Between Two Spherical Shells
- Ishida52134
- · Replies 4 ·
Solving work energy problems, with velocity and friction as givens.
- nickyak
- · Replies 3 ·