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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How to Calculate Moment of Inertia for Different Door Rotations?
- tangibleLime
- · Replies 3 ·
Moment of inertia of a rotating bar
- pat666
- · Replies 2 ·
Finding Optimal Elevation Angles for a Field Goal: A Kinematics Trig Problem
- GunnaSix
- · Replies 5 ·
Maximum speed for a vehicle to pace another at constant velocity
- charlievictor
- · Replies 1 ·
Eddy current losses - solid/laminated cores
- satchmo05
- · Replies 2 ·
Up, anti-up quark annihilation Feynman diagram
- Sonko
- · Replies 1 ·
Moment of inertia and kinetic energy of a rotating particle
- pat666
- · Replies 12 ·
Speed of 4.00 kg block before hitting floor using energy methods
- pat666
- · Replies 28 ·
Finding unknown resistance and EMF in a three-resistor circuit
- PhilCam
- · Replies 14 ·
Toy car flywheel energy and angular velocity
- EzaMoo
- · Replies 3 ·
How Do You Calculate Energy Delivered to an Inductor Over Time?
- sinned4789
- · Replies 1 ·
Tour Submarine: Deep View 66 Can Descend to What Depth?
- rijo664
- · Replies 3 ·
Electric field from exponential charge density using Gauss' law
- zSanityz
- · Replies 13 ·
Pressure of person on chair Question
- rijo664
- · Replies 7 ·
How Is Buoyancy Calculated for a Cube Suspended in Mercury and Water?
- patricks
- · Replies 1 ·
How Do You Calculate Fragment Velocities Post-Explosion in Projectile Motion?
- red123
- · Replies 1 ·
Calculating Current in a Rotating Loop Using Faraday's Law
- satchmo05
- · Replies 1 ·
Finding the mach number of an aircraft
- jmm5872
- · Replies 3 ·
Focal Length of Lens: Solving for f with Object and Image Distances
- sp1974
- · Replies 5 ·
Calculating Angular Momentum for a Particle Moving in the xy Plane
- mybrohshi5
- · Replies 10 ·
Collision Avoidance - Constant Deceleration
- Beamsbox
- · Replies 2 ·
Newton's Law Problem, involves n-t frame or r-t frame
- jlopez
- · Replies 2 ·
Question from simple lens diagram (camera)
- ZedCar
- · Replies 6 ·
Divergence of magnetic flux density
- Defennder
- · Replies 16 ·
Calculating Tension, Work, and Power in Elevator Systems
- y7lee
- · Replies 7 ·
Acceleration of 4kg Object w/ Force at 37 Degrees
- zafer
- · Replies 2 ·
How Do You Determine the Allowed Radii in a Quantized Angular Momentum Scenario?
- scoldham
- · Replies 5 ·
How Do You Calculate Object Distance in Lens Equations?
- sp1974
- · Replies 5 ·
Why Was My Calculation of a -4.2 Diopter Lens's Focal Length Rejected?
- sp1974
- · Replies 2 ·
Why Is Weight Expressed in Scientific Notation in Physics Problems?
- YayPhysics
- · Replies 2 ·
Question on nuclear/quantum mech. unit of physics, its due 10pm tonight
- physicsboy321
- · Replies 1 ·
Coefficient of restitution factors
- DV10
- · Replies 3 ·
What Frequency Photon Ionizes an Atom from n=2 State?
- sskk221
- · Replies 3 ·
How Long Does a Ball Take to Fall Back Down After Being Thrown Upward?
- manzoor
- · Replies 3 ·
A conduction coil and 2 resistors
- Karol
- · Replies 4 ·
Spy satellite telescope mirror size for 1-inch angular resolution
- BurnieMac
- · Replies 1 ·
How Much Electrical Power Does a 75% Efficient Pedal-Operated Generator Produce?
- lemon
- · Replies 2 ·
Swinging a Ball on a String: Who is Doing the Work?
- teres
- · Replies 5 ·
How Do You Calculate the Force of a Falling Object Compressing a Spring?
- Edinator
- · Replies 1 ·
Ratio of masses for maximum energy transfer in elastic collision?
- gaobo9109
- · Replies 5 ·
So, very amateur question regarding element combinations
- Boquito17
- · Replies 4 ·
Rotational kinematics of a 0.750 m diameter turntable
- pat666
- · Replies 31 ·
Fan blade tip speed after 10 seconds of coasting to stop
- tangibleLime
- · Replies 9 ·
What is the resonator of a trumpet?
- chem_is_lovex
- · Replies 1 ·
Suspended object moment of inertia
- pat666
- · Replies 25 ·
Magnetic field and wire current
- dmsgo89
- · Replies 3 ·
Quadratic Equations and kinetics
- mode656
- · Replies 9 ·
Work to assemble four point charges at square corners
- GlobalDuty
- · Replies 1 ·
How Does Incline Angle and Friction Affect Block and Flywheel Dynamics?
- pat666
- · Replies 11 ·
Six rotational and projectile motion problems
- adnama
- · Replies 1 ·
Mechanical energy/efficiency problem
- Flatshoe
- · Replies 6 ·
Recirculating DE Mixture Problem
- The0wn4g3
- · Replies 2 ·
How Large Will the Air Bubble Be When It Reaches the Surface?
- mparsons06
- · Replies 9 ·
Projectile motion fountain question
- gaobo9109
- · Replies 2 ·
Determination of Grease Viscosity Using Sliding Block Experiment
- Louisa88
- · Replies 1 ·
Why Does the Angular Momentum Change When the Wheel is Turned Upside Down?
- mybrohshi5
- · Replies 2 ·
Solving Simultaneous Equations and Understanding Exponential Properties
- 3nder
- · Replies 5 ·
Maximum velocity of circular motion
- lemon
- · Replies 30 ·
Bucket falling from cylinder: tension, speed, time and axle force
- pat666
- · Replies 5 ·
Calculating time constant in RC circuit
- Hitman6267
- · Replies 2 ·
How Does a Changing Magnetic Field Affect Nearby Electric Fields?
- DeadFishFactory
- · Replies 3 ·
Potential energy stored in a spring
- zafer
- · Replies 1 ·
Angular Acceleration: Understanding [omega]^2/Time
- Tom83B
- · Replies 2 ·
What height is KE equal to PE for a 4kg ball thrown at 40m/s?
- zafer
- · Replies 7 ·
Potential and kinetic energy of 80kg man on swing at 1/12 period
- Patrickas
- · Replies 9 ·
Calculating Volume Change for an Air Bubble Rising from Depth
- toadslayer11
- · Replies 1 ·
4kg block pulled with 5N force for 5s: find speed, acceleration, and distance
- Xintong
- · Replies 1 ·
Calculating Spring Constant and Work Done on a Compressed Spring
- member 247426
- · Replies 4 ·
Orbiting Satellite Energy Conservation
- oasis13
- · Replies 1 ·
Calculating No-Load Voltage for DC Generator
- xbebopx
- · Replies 1 ·
Calculating Maximum Elevation of Top Ball After Collision
- Crebble32
- · Replies 2 ·
Find Initial Angle to Hit Target 100m Away with Rifle at 30deg Angle
- Crebble32
- · Replies 4 ·
Boy Sliding Down Frictionless Ice: Conservation of Energy
- slayer16
- · Replies 1 ·
Calculating Power: Torque on a 20 Kg Rod Pivoted at 6m | 500 Rad Rotation
- b577phaty
- · Replies 1 ·
Shrodinger equation/Particle in a box
- Linus Pauling
- · Replies 1 ·
Finding the total gravitational potential energy of a gas cloud
- TheTourist
- · Replies 1 ·
Coefficient of kinetic friction, need today
- an9890
- · Replies 3 ·
Probability of finding a particle given psi squared graph
- Linus Pauling
- · Replies 4 ·
How Efficient is a Carnot Air Conditioner at 76°F Indoors and 96°F Outdoors?
- noname1
- · Replies 3 ·
Angular Speed: Man Moves 2m from Turntable Center
- squintyeyes
- · Replies 3 ·
Simple Harmonic Motion - position
- jalamb90
- · Replies 1 ·
With two provided metals, find which one is the magnet.
- BraedenP
- · Replies 8 ·
Solving for y-intercept on a wavefunction graph
- Linus Pauling
- · Replies 8 ·
Finding angular acceleration of 2 masses on a rod
- umdece4
- · Replies 1 ·
What is the best experimental method for determining the charge of an electron?
- Sassenav22
- · Replies 2 ·
Pully/block system on an incline
- b577phaty
- · Replies 5 ·
Efficiency of Power Line Transmission
- yeah:)
- · Replies 13 ·
Calculate Velocity of Skydiver: Mass M, Air Drag Coefficient D
- Crebble32
- · Replies 2 ·
Find mass of steam using the 'Ideal Gas Equation'.
- Lenstonbain
- · Replies 1 ·
Tuning a Trumpet for Cold Weather Performance
- crosbykins
- · Replies 4 ·
Frequency of Photons in Hydrogen Gas: 100 Electrons in n=3 Orbit
- abohn1
- · Replies 1 ·
Why is l=3 for the orbital angular momentum of a hydrogen 6f state?
- Linus Pauling
- · Replies 1 ·
What Volume Flow Rate Keeps Pressures Equal in a Bending Pipe System?
- rechitzy
- · Replies 1 ·
Where Does a Particle in Harmonic Motion Have Maximum Speed?
- jwxie
- · Replies 1 ·
(Very) Short Question on Nuclear Reaction
- bleedblue1234
- · Replies 3 ·
Energy and pulleys (Atwood's machine i think)
- pat666
- · Replies 2 ·
How is lateral displacement (reflection/refraction) derived?
- zell_D
- · Replies 2 ·
Finding Q(point charge) with an angle, mass, and radii only
- Sakuraba_Neku
- · Replies 4 ·
Calculating Velocity After a Force is Applied
- cheerspens
- · Replies 1 ·