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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Does a falling mass make the spool rotate counterclockwise?
- Adriano25
- · Replies 8 ·
Magnetic field in an offset hole in a conductor cylinder
- zweebna
- · Replies 1 ·
Aeroplane follows circular trajectory-Tension? (geometry)
- Const@ntine
- · Replies 6 ·
Statics:Find the Tension in a rope holding a boom
- fishturtle1
- · Replies 4 ·
First Law of Thermodynamics issue
- ghostops
- · Replies 5 ·
Slipping transitioning to rolling without slipping
- lightofthemoon
- · Replies 6 ·
Max reaction force - ferris wheel
- krbs
- · Replies 12 ·
Showing the force on a magnetic dipole
- rebc
- · Replies 4 ·
Velocity of a satellite in a eccentric orbit
- farolero
- · Replies 5 ·
Maximum force so object on top wouldn't start sliding back
- Arquon
- · Replies 4 ·
Pressure in a Fluid-Filled Glass with a Side-Hole Tube: Is Pa = Pb = Pc?
- EMP
- · Replies 1 ·
Deriving Snell's law from plane wave superposition at interface
- zhouhao
- · Replies 4 ·
What is the amplitude of the resulting oscillations?
- yecko
- · Replies 21 ·
Find the minimum kinetic energy of two electrons in a 1D box
- danmel413
- · Replies 4 ·
Determining pressure at various altitudes using integration
- joseph_kijewski
- · Replies 5 ·
Kepler's Law for finding velocity
- Carpetfizz
- · Replies 9 ·
How Do You Build a Clock Using a Spring and Potential Energy?
- ikihi
- · Replies 18 ·
Moment of inertia of a falling tree at 17° angle
- RavenBlackwolf
- · Replies 11 ·
Internal energy and temperature change with heat transfer and work
- Nick88
- · Replies 1 ·
Shunt-wound DC motor: finding field and rotor currents, emf, and thermal losses
- David112234
- · Replies 13 ·
Ball dropped in air at 20m/s, why v=20 not v0=20
- MrGoATi
- · Replies 13 ·
How to show that Carnot engine is more efficient?
- flux!
- · Replies 1 ·
How Does Temperature Influence Total Resistance in Parallel Resistors?
- ravsterphysics
- · Replies 3 ·
Man Rows Boat: Force, Angle, Velocity Examined
- Const@ntine
- · Replies 15 ·
Solving for initial and final energy using conservation of energy
- Neon32
- · Replies 10 ·
What is the Thermal Efficiency of an Engine?
- yecko
- · Replies 5 ·
Determining hole size using laser interference
- Drizzy
- · Replies 6 ·
Conservation of energy hard problem.
- Neon32
- · Replies 8 ·
Finding ez in a unit vector equation
- hubluh
- · Replies 7 ·
Finding tension in a rope connecting two blocks on an incline
- yecko
- · Replies 17 ·
Time it takes for a capacitor to lose half of its energy
- sliperyfrog
- · Replies 9 ·
Finding electric field amplitude from laser force on reflecting surface
- Wyoming Physics
- · Replies 1 ·
A person walks on a rotating platform at constant speed
- bunchedupwalrus
- · Replies 11 ·
Rock Thrown from 32m Building: Vertical Velocity at 6m Question
- Jud Rice
- · Replies 4 ·
Elastic/Inelastic collision upon Traincrash
- TheChemist_
- · Replies 21 ·
What Is the Speed of the Comet at a Different Distance?
- Vanessa Avila
- · Replies 17 ·
Finding the astronaut's weight on a planet's surface
- Vanessa Avila
- · Replies 9 ·
Momentum conservation (ballistic pendulum)
- jakec
- · Replies 2 ·
How Do You Calculate the Propagation Speed of a Transverse Wave on a String?
- RavenBlackwolf
- · Replies 8 ·
Stuntman descending on rotating cylinder rope
- jakec
- · Replies 5 ·
X-ray photoelectric effect with 5 eV and 2.3 eV work functions
- Ekramul Towsif
- · Replies 3 ·
Understanding Forces and Motion in a 3D Coordinate System
- Const@ntine
- · Replies 4 ·
Finding velocity of point on rolling cylinder given polar motion equations
- doktorwho
- · Replies 17 ·
Calculating initial velocity in elastics collision
- blixel
- · Replies 2 ·
Relative velocity and acceleration between two accelerating cars
- Const@ntine
- · Replies 2 ·
Converting acceleration stated in terms of velocity to time
- k_squared
- · Replies 4 ·
Solve Acceleration of Rod's Centre of Mass
- Diganta28
- · Replies 1 ·
Experiment using a Wheatstone Bridge
- Taniaz
- · Replies 10 ·
What is the Magnetic Flux through a Loop with Opposite Magnetic Fields?
- ATT182
- · Replies 4 ·
Understanding Biot-Savart's Law for a Rotating Disc with Current Density
- Fips
- · Replies 1 ·
Ratio of wall collisions when temperature quadruples
- Any Help
- · Replies 1 ·
Q factor of an AM radio RLC circuit
- RyanP
- · Replies 4 ·
Significance of magnetic flux between wires
- Faiq
- · Replies 9 ·
Dielectric strength and breakdown voltage capacitor
- late347
- · Replies 4 ·
Did I understand sound refraction (am I doing it right)?
- Amar
- · Replies 2 ·
Magnetic field too large for electromagnet with carbon steel core
- StormDuck
- · Replies 7 ·
Where to place a weight on a bar so that the net torque is 0
- fishturtle1
- · Replies 5 ·
Discharging capacitor in RC circuit, confusing path
- horsedeg
- · Replies 3 ·
Spring's Potential Energy expression
- PhysicsIsInteresting
- · Replies 2 ·
Infinite Parallel wires Magnetic field
- Funnynick
- · Replies 8 ·
What is the Electric Potential of a Uniformly Charged Ring?
- Cantspel
- · Replies 15 ·
RC Circuit and current from a discharging capacitor
- horsedeg
- · Replies 9 ·
Directional Acceleration at Relativistic Speeds
- PhysicsLord
- · Replies 6 ·
Vomit Comet parabolic trajectory velocity and height at max altitude
- Const@ntine
- · Replies 11 ·
Vapor pressure over a water drop as a function of temperature and radius
- Frank Einstein
- · Replies 11 ·
Find the net work required to accelerate a cylinder
- blixel
- · Replies 7 ·
How Does Wavelength Influence the Power of a Wave on a String?
- ChloeYip
- · Replies 7 ·
Solving Boat Motor Engine Equations w/ Integration
- betty0202
- · Replies 4 ·
How can I accurately determine the time gained or lost by a clock?
- Vibhor
- · Replies 24 ·
Finding the gauge pressure at the bottom of a barrel
- Vanessa Avila
- · Replies 4 ·
Pulley rotational speed in block and tackle
- KentVibEngineer
- · Replies 3 ·
Rock falls from cliff-Initial Velocity?
- Const@ntine
- · Replies 3 ·
A simple angular velocity with two spheres problem
- dennislam
- · Replies 1 ·
Electromagnetic wave phasor conversion
- TheRedDevil18
- · Replies 2 ·
RMS speed ratio of helium to oxygen at 260K
- ChloeYip
- · Replies 6 ·
How to Analyze a Plutonium-Based Atomic Bomb?
- Sarah Madsen
- · Replies 20 ·
Position vs time graph simple harmonic motion phase constant
- Ly444999
- · Replies 2 ·
Calculating Hydrogen Mass from Ideal Gas Law
- ChloeYip
- · Replies 3 ·
Two particles undergoing circular motion
- Vibhor
- · Replies 28 ·
What Causes the Rod to Rotate?
- physics_rino
- · Replies 3 ·
Ice cube sliding off metal roof
- Carpetfizz
- · Replies 4 ·
Mass and pulley system (Rotational Dynamics)
- ikihi
- · Replies 9 ·
At what time is the velocity perpendicular to the acceleration
- hhhp8cec1
- · Replies 7 ·
Electron's energies and charge density in plate-capacitor
- late347
- · Replies 3 ·
How to find magnetic field in a square coil next to an RC circuit
- davidhowie34
- · Replies 5 ·
How Do You Calculate the Speed of a Mass in an Oscillating System?
- Adriano25
- · Replies 4 ·
What is the Maximum Altitude of a Model Rocket?
- Januz Johansen
- · Replies 9 ·
How to calculate the current of a stream of electrons
- ravsterphysics
- · Replies 2 ·
If a with respect to b, which is the independent variable?
- Zheng_
- · Replies 10 ·
Finding force and equilibrium from exponential potential energy
- betty0202
- · Replies 2 ·
Why does transformer secondary voltage not equal rated voltage?
- Clara Chung
- · Replies 3 ·
How Do You Calculate Changes in Particle Speed in Circular Motion?
- agargento
- · Replies 11 ·
Dynamics: Cannon ball and the moving gun
- rndaryam
- · Replies 2 ·
Moment of inertia of a hollow cylinder derivation
- Carpetfizz
- · Replies 3 ·
Why Does an Object Emit Every Color of Light?
- Drizzy
- · Replies 5 ·
When does the ball come to rest?
- Gopal Mailpalli
- · Replies 12 ·
Why does blocking a hose opening increase water distance by a factor of 4?
- joseph_kijewski
- · Replies 8 ·
Rigid Object Under net torque question
- stratz
- · Replies 7 ·
What is the value of b for a damped harmonic oscillator with given parameters?
- Jrlinton
- · Replies 2 ·
Luminosity of the Earth covered in bulbs
- Stendhal
- · Replies 2 ·