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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State Space Model of an RL Circuit
- YoshiMoshi
- · Replies 1 ·
Rotational motion: Conservation of energy doesn't work....
- Johnnnnnnnn
- · Replies 11 ·
Physics: Circular motion and the orbital speeds of satellites
- YMMMA
- · Replies 2 ·
Peak wavelength and Spectral Bandwidth
- says
- · Replies 4 ·
Convert a spherical vector into cylindrical coordinates
- Mulz
- · Replies 9 ·
How Far Will a Block Travel Up a 32-Degree Ramp with Initial Speed of 3.7 m/s?
- Cantphysics
- · Replies 2 ·
What is the minimum force at this angle that will move the box?
- zehkari
- · Replies 12 ·
Projectile Motion - object that is shot at an angle of 55 degrees
- Yellowkies_3275
- · Replies 8 ·
Half Atwood machine: acceleration after inital force
- arturo
- · Replies 3 ·
Circular Motion: Swinging a rock on a string in a vertical circle....
- Student4Life
- · Replies 1 ·
Variation of potential energy with height
- jasonchiang97
- · Replies 4 ·
Formula to calculate the charge in a sphere
- elleo
- · Replies 4 ·
Driven Oscillation: Springboard diving
- Beth N
- · Replies 1 ·
Physics: transverse wave & wavelength & motion
- YMMMA
- · Replies 15 ·
Archimedes' principle -- Which box will sink first as we add coins....
- dkk
- · Replies 4 ·
An electron & a proton are each placed in an electric field
- amyc
- · Replies 1 ·
Find Her Acceleration (2 ice skaters pushing a 3rd skater)
- Austin Gibson
- · Replies 7 ·
How to calculate a coefficient of performance (COP)
- Screwed
- · Replies 12 ·
"How far did the car move while braking?"
- Austin Gibson
- · Replies 14 ·
Physics homework help regarding energy and friction
- Dan_321
- · Replies 4 ·
Finding Charge & Tension of a Suspended Cork Ball
- amyc
- · Replies 3 ·
A question about contact forces and friction
- devilish_wit
- · Replies 6 ·
Introductory Physics - Finding "little g"
- MaximusDecimus
- · Replies 5 ·
Deriving Lorentz Transformation
- Arman777
- · Replies 4 ·
Physics: wavelength of sound waves
- YMMMA
- · Replies 8 ·
Missing info from this question? (Max. acceleration possible for a vehicle)
- sp3sp2sp
- · Replies 3 ·
Acceleration in an inertial reference frame
- Swag ranger
- · Replies 3 ·
What's the Total Force Exerted on the Skater?
- Austin Gibson
- · Replies 4 ·
Finding nearest neighbour equilibrium distance
- Cocoleia
- · Replies 4 ·
Difficult time with motion graphs & dynamics
- devilish_wit
- · Replies 1 ·
Compton Scattering- finding photon wavelength
- PhysicsInNJ
- · Replies 5 ·
How Do Compatible Observables Determine Common Eigenstates?
- jasonchiang97
- · Replies 23 ·
What will the wave velocity be in this string?
- Zakiyah Afrin
- · Replies 15 ·
I'm stuck This is a combination of dynamics and free fall
- devilish_wit
- · Replies 2 ·
Is Bernoulli's Equation Applicable for Finding Pressure in Hydraulics Problems?
- fayan77
- · Replies 7 ·
I have a hard time with kinematics involving inclined planes
- devilish_wit
- · Replies 4 ·
How to Determine Electric Flow Through a Square Surface Due to a Nearby Charge?
- Est120
- · Replies 9 ·
Are the answer choices wrong? (electric potential energy)
- lorx99
- · Replies 10 ·
Euler-Lagrange equation on Lagrangian in generalized coordinates
- zhaos
- · Replies 6 ·
How much time for this person to drive across time zones? (vectors)
- Shaq
- · Replies 18 ·
Electric Field Inside Concentric Spheres
- lorx99
- · Replies 7 ·
Complex Kinematics and Dynamics
- Vraj Patel
- · Replies 8 ·
The Mystery of Human Luminosity: A Comparison to Daily Energy Intake
- Xalkias
- · Replies 2 ·
Calculating acceleration of a falling orange
- mr.plow
- · Replies 10 ·
Projectile motion: Two objects are kicked upward at different angles....
- shayshay00
- · Replies 5 ·
Electromagnetic field acting on a conducting infinite plate
- papercace
- · Replies 1 ·
Physics: vertical motion and velocity/kinematics
- YMMMA
- · Replies 8 ·
Correct usage of Ampère's law for calculating B-field outside parallel wires?
- papercace
- · Replies 4 ·
Significant figures in practical investigation report
- winkyinky146
- · Replies 4 ·
Calculate RPM given the force of a torsion spring
- saaaaam
- · Replies 3 ·
Physics Homework -- block pressed against a wall is sliding....
- sophia026
- · Replies 4 ·
Physics: Projectile Motion - Maximizing Soccer Ball Distance/Hang-Time
- YMMMA
- · Replies 34 ·
Frequency and wavelength of a wave on a vertical rope
- Helloworld
- · Replies 4 ·
Potential due to Uniform Charge Distribution (3d)
- lorx99
- · Replies 5 ·
Electric Potential Integral Question Confused
- lorx99
- · Replies 2 ·
What Condition Ensures Refracted and Incident Rays Have the Same Direction?
- YMMMA
- · Replies 4 ·
SAT physics question -- Flag on a bicycle being ridden in the wind....
- YMMMA
- · Replies 6 ·
Young's Modulus Experiment With a Glass Screen
- Jeremy Feng
- · Replies 1 ·
SHM: Planet Problem Homework Statement
- komarxian
- · Replies 2 ·
Force applied on the pulley of a system
- SakuRERE
- · Replies 8 ·
Find the missing force when the boy is pulled
- issacnewton
- · Replies 35 ·
Finding the acceleration of two masses on a pulley system
- Jpyhsics
- · Replies 66 ·
Thermodynamics of a Single-Component Ideal Gas
- TRB8985
- · Replies 1 ·
Can Twine Support a 15-N Picture Without Breaking?
- SakuRERE
- · Replies 3 ·
Conservation of Energy: Spring PE: Toy gun on spring
- DracoMalfoy
- · Replies 4 ·
Potential of parallel plate capacitor
- cookiemnstr510510
- · Replies 2 ·
Complex Kinematics and Dynamics
- Vraj Patel
- · Replies 7 ·
Conceptual Question: Block on a wedge on a frictionless surface
- msun5040
- · Replies 2 ·
Acceleration and Tension in a Two-Block System on an Inclined Plane
- SakuRERE
- · Replies 8 ·
Electric Potential at Radius R of Concentric Spheres
- lorx99
- · Replies 7 ·
SR - Time dilation, space-time diagram, and radio signals
- PaRaXeRoX
- · Replies 1 ·
Energy of a crystal in thermal equilibrium
- patrykh18
- · Replies 1 ·
Optics Problem with a Double Lens System
- blizzardof96
- · Replies 1 ·
Fraunhofer Diffraction Pattern Ratio of Power Densities
- says
- · Replies 34 ·
Two blocks, a fixed pulley and friction
- SakuRERE
- · Replies 4 ·
Highest Frequency emitted by bremsstrahlung
- Blanchdog
- · Replies 7 ·
Determining net force using Gauss' Law
- cookiemnstr510510
- · Replies 8 ·
What is the relationship between tension and mass in a system with friction?
- SakuRERE
- · Replies 6 ·
Quick question about uncertainty in using a stopwatch
- NicolaiTheDane
- · Replies 7 ·
Spring Potential Energy: Horizontal Spring Problem
- DracoMalfoy
- · Replies 6 ·
Combine the expressions for tension and solve for acceleration
- asusal
- · Replies 3 ·
Truck carrying a box, friction problem
- GrF58
- · Replies 10 ·
How Do You Calculate Robot Arm Motion to Reach Specific Coordinates?
- Kernul
- · Replies 11 ·
Use Gauss' Law to find E-field, tricky problem
- cookiemnstr510510
- · Replies 3 ·
Create the free-body diagram for the scenario below.
- Clare
- · Replies 3 ·
Momentum and collision related problem
- Finn007
- · Replies 16 ·
-- The drawing shows three particles far away from....
- Clare
- · Replies 7 ·
Forces on a Block and Friction on a Surface
- JessicaHelena
- · Replies 8 ·
Calculating a ratio in Free Fall motion
- vAhmed
- · Replies 7 ·
Calculate the electric field in all of space for a non conducting sphere
- cookiemnstr510510
- · Replies 2 ·
Electric field of spherical shell
- starstruck_
- · Replies 2 ·
How do masses and pulleys behave in a balanced system with different weights?
- Amir80om
- · Replies 10 ·
Vectors and Two Dimensional Motion
- Eagleq8
- · Replies 16 ·
Calculating the capacitance of a system of two plates tilted at a small angle
- cookiemnstr510510
- · Replies 2 ·
Prove the following identity [Einstein notation]
- Mulz
- · Replies 3 ·
Derivation of electric potential charged disk from ring
- cookiemnstr510510
- · Replies 6 ·
Finding minimum force to pull the napkin out from under the tea cup
- Jpyhsics
- · Replies 7 ·
Variation in mass and binding energy in nuclear reactions
- Krushnaraj Pandya
- · Replies 5 ·
Finding the Coefficient of Friction in a Spring-Block Incline System
- Puneet Tanwar
- · Replies 2 ·
Resonant Lengths in open air column question
- BadDriver
- · Replies 6 ·