Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Sign of differential length in work
- jonjacson
- · Replies 17 ·
Frequency domain and mesh currents
- Cocoleia
- · Replies 9 ·
How to Calculate the X-Component of the Magnetic Moment in a Rectangular Loop?
- marchcha
- · Replies 3 ·
Projectile Motion: Height of hammer thrown downwards
- aatari
- · Replies 1 ·
Why Is the Centripetal Acceleration Positive in Uniform Circular Motion?
- Rijad Hadzic
- · Replies 5 ·
Max Upward Force to Hold Bowling Ball on Wall
- mattbeatlefreak
- · Replies 20 ·
Does ω0 = ωf when radius of circular motion changes?
- Vitani11
- · Replies 11 ·
Determine the natural frequency
- cxz7410
- · Replies 2 ·
Electric field inside a spherical charge distribution with Gauss's law
- Cocoleia
- · Replies 5 ·
Finding Components of Velocity on a Ramp
- Natalie456
- · Replies 8 ·
Calculating Ozone Levels from Air Purifier Output: Converting mg/hr to ppb
- greengirl
- · Replies 3 ·
How are magnetic field lines affected by the rotation of the sun?
- Kara386
- · Replies 5 ·
Trajectory of a particle in a spinning fluid
- rulo1992
- · Replies 1 ·
Does a Sliding Mass on an Incline Have a Horizontal Acceleration Component?
- Natalie456
- · Replies 3 ·
Why does nebulosity around an O star show only continuous spectrum?
- Jade45
- · Replies 1 ·
Parameterization of a path to find work
- Vitani11
- · Replies 4 ·
Relationship of spring constant and torsion constant?
- NoviSad
- · Replies 7 ·
Toy car executing a vertical loop
- Jared C
- · Replies 2 ·
Quantities without unit of measure
- Caio Graco
- · Replies 36 ·
Electric field above a charged square loop
- Cocoleia
- · Replies 1 ·
How Does a Bungee Jumper's Energy Change During a Jump?
- patrickmoloney
- · Replies 14 ·
Light wave reaching A' and C' from moving frame S'
- ElPimiento
- · Replies 2 ·
Net electric field of a charged arc
- Jrlinton
- · Replies 5 ·
Calculating Capacitance in Closed Loop Circuits
- Jrlinton
- · Replies 1 ·
Gas Compression Temperature Change
- DaynaClarke
- · Replies 4 ·
Effect of mass on skid distance of car experiment
- NihalRi
- · Replies 7 ·
Pion lifetime and relativistic energy in a decay tube
- HelpPlease27
- · Replies 4 ·
Rounding experimental results to significant figures
- Silviu
- · Replies 2 ·
Confused about voltage & current -- Please check my understanding
- Barclay
- · Replies 2 ·
Angular momentum of a rotating door
- bananabandana
- · Replies 8 ·
Time for Non-Uniform Acceleration
- classi
- · Replies 1 ·
Electric field strength in an ink-jet printer
- pbj_sweg
- · Replies 1 ·
Thermodynamics -- Internal Energy of Water
- dlacombe13
- · Replies 8 ·
What angle should a swimmer aim to land directly across the starting position?
- WorkingHard2017
- · Replies 6 ·
Acoustic impedance and wave reflection at Al-Cu boundary
- Nerrad
- · Replies 5 ·
Why does total resistance increase when removing a bulb from a parallel section?
- AdkinsJr
- · Replies 6 ·
Archived How Do You Calculate Linear Drag Coefficient for Spherical Objects in Flight?
- Screwdriver
- · Replies 1 ·
Estimates of Percentage Errors in Cosomology
- resurgance2001
- · Replies 6 ·
Hall effect -- calculate carrier mobility and density
- Kara386
- · Replies 2 ·
Operational Amplifier Comparator Circuit
- Taniaz
- · Replies 27 ·
Where to place lenses in a two-prism optical system
- hromi2
- · Replies 5 ·
Value of resistor for full scale deflection with 10A
- SpiraRoam
- · Replies 1 ·
Static friction 2 boxes and force question
- weinbergshaun
- · Replies 19 ·
Why does the current need to be small when using an ohmmeter?
- IDK10
- · Replies 19 ·
Traveling and Standing Wave Equations
- Taniaz
- · Replies 10 ·
Tension, Spring and Moments of Inertia
- rahularvind06
- · Replies 11 ·
Thermal Expansion: Glass rectangle
- paulie
- · Replies 4 ·
What is the orbital period of an asteroid between Earth and Jupiter?
- TheBigDig
- · Replies 2 ·
Derivation of formula of normal acceleration
- Granger
- · Replies 7 ·
Energy Required to Lift an Object to Various Heights
- harveydinkle
- · Replies 2 ·
What is the volume of gas at state C?
- timetraveller123
- · Replies 5 ·
Does the Laser Blast the Goths?
- timetraveller123
- · Replies 18 ·
RC circuit current after switch opens with two resistors
- terryds
- · Replies 9 ·
Total charge and charge density on capacitor plates
- jlmccart03
- · Replies 17 ·
Magnitudes and Directions In Uniform Circular Motion
- Rodriesk
- · Replies 1 ·
What's the difference between W = 0.5 P Δ and W = P Δ for external work?
- fonseh
- · Replies 5 ·
Velocity from Acceleration-Time Graph
- aatari
- · Replies 2 ·
Distance between two events in a moving reference frame
- nagyn
- · Replies 11 ·
How long does it take to push this block at an angle?
- EthanVandals
- · Replies 7 ·
Find the velocity given coefficient of friction and radius?
- Kataryx
- · Replies 1 ·
Conservation of Energy, Down an Incline with a Spring
- RavenBlackwolf
- · Replies 6 ·
[PoM] Average rotational energy
- BRN
- · Replies 1 ·
Rock is being thrown horizontally off a cliff (2d motion)
- Rijad Hadzic
- · Replies 9 ·
How to find Torque without Coefficient of Friction?
- Tyler Riley
- · Replies 1 ·
Tension in rod AB using principle of moments
- OnlinePhysicsTutor
- · Replies 5 ·
What is the electric field at this point?
- Luke0034
- · Replies 2 ·
Torque needed to accelerate rail-mounted vehicle
- Ole Forsell
- · Replies 7 ·
What is the charge density on the insulator?
- Luke0034
- · Replies 1 ·
Flight time for projectiles at 0° and 30° with initial speed 100 m/s
- EthanVandals
- · Replies 7 ·
Evaluating a simple electrostatic field integral
- Taulant Sholla
- · Replies 5 ·
Deriving the period formula for symmetric potential oscillations
- Robben
- · Replies 10 ·
Relating stellar radius and temperature on the main sequence
- Physics Dad
- · Replies 1 ·
Theoretical model for damped harmonic oscillation.
- Daniel Sellers
- · Replies 3 ·
How to Calculate ΔU and ΔH for CO2 Heated Isobarically?
- dlacombe13
- · Replies 8 ·
Amusement Rotor Ride Explanation
- PhysicsCollegeGirl
- · Replies 6 ·
Calculating the Spring Constant from Force-Extension Graph
- Jadaa
- · Replies 6 ·
Determine the initial acceleration of the 15-kg block
- javii
- · Replies 2 ·
How Do You Calculate Terminal Voltage and Potential Difference in a Circuit?
- Adriano25
- · Replies 3 ·
What is the sine of the angle between two given vectors?
- Jovy
- · Replies 6 ·
What is the acceleration at the 5 s mark?
- aatari
- · Replies 12 ·
Effects of frequency on rate of emission of photoelectrons
- coconut62
- · Replies 11 ·
Using momentum conservation as holonomic constraint
- Dor_M
- · Replies 6 ·
What Is the Highest Temperature Reached in the Ideal Gas Cycle?
- weinbergshaun
- · Replies 4 ·
Heating Water with vapor at certain pressure
- DelfinDelfin
- · Replies 1 ·
Summing op amp circuit gives -3V but marked wrong
- Jayalk97
- · Replies 6 ·
Projectile motion of tabletop ball?
- Sagrebella
- · Replies 12 ·
Finding axial force N from fiber stress and strain
- billy722
- · Replies 6 ·
Kinematics>>Equations of Motion
- SunnyH
- · Replies 1 ·
Calculating Charge and Potential in a Series RC Circuit
- terryds
- · Replies 20 ·
(forces) Find the force problem
- Brittany W
- · Replies 3 ·
Why doesn't the gravity affect the torque along the z axis?
- Physicslearner1
- · Replies 11 ·
Why is the velocity at the cusp point equal to the final velocity on the hill?
- ButteredCatParadox
- · Replies 10 ·
What is the solution to the spring and disk rotation problem?
- Arman777
- · Replies 15 ·
Initial Voltage in an RC circuit with a Current Source and no Voltage Source
- Bassa
- · Replies 13 ·
Force to pull 85 kg roller over a step at 45 degrees
- mtig
- · Replies 9 ·
How can power and work be calculated using friction and known mass and distance?
- Alex126
- · Replies 8 ·
Solving specific heat problem with two materials
- HDTeach
- · Replies 7 ·
Conditions for waves to be coherent?
- MBBphys
- · Replies 1 ·
Potential Energy vs. Position Graphs
- sunnnystrong
- · Replies 4 ·