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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Clear misconception: Angular Momentum of Merry Go Round vs Ice Skater
- fignewtons
- · Replies 1 ·
Calories generated in brakes of a machine
- Karol
- · Replies 6 ·
Express the moment (torque) as a function of theta
- tentoes
- · Replies 9 ·
Contact forces between four overlapping see-saws with 50 kg acrobats
- cmcd
- · Replies 6 ·
Find the electric potential V(r)
- Zamarripa
- · Replies 1 ·
Find the total electrostatic energy stored in the configuration
- ghostfolk
- · Replies 6 ·
How Fast Does a Ball Travel When Dropped from 5 Meters?
- hafiz ns
- · Replies 3 ·
Equivalent resistance of the circuit
- Krowek
- · Replies 6 ·
Focal Length of a Plane Glass: How to Measure and Understand Its Infinite Power
- hafiz ns
- · Replies 2 ·
Transverse velocity of a standing wave
- jhans11
- · Replies 2 ·
How Does Speed Affect Car Stopping Distance?
- HaLAA
- · Replies 3 ·
Reference Frames: Up and Down a River
- TheDestroyer123
- · Replies 1 ·
Glancing angle vs deviation angle in X-ray diffraction
- gxc9800
- · Replies 1 ·
Force and work on a sliding feraligatr on a 30° incline
- Chillitsphysics
- · Replies 1 ·
Monkey and Hunter:Projectile Motion
- TheDestroyer123
- · Replies 1 ·
Ball thrown upwards: Acceleration and Velocity
- helloimsam
- · Replies 1 ·
Rotational Physics - Bead on spinning ring
- AgentRedfield
- · Replies 5 ·
Representing distributed loads with singularity functions
- princejan7
- · Replies 2 ·
What is the water speed as it leaves the nozzle?
- hitemup
- · Replies 4 ·
Why does the del operator remove the exponential in a plane wave?
- baby_1
- · Replies 1 ·
Why are there two answers to (b)?
- hitemup
- · Replies 2 ·
Falling Dumbbell: Determine Force vs Angle
- sergiokapone
- · Replies 30 ·
Why does the product nucleus have Z or Z+1 electrons in beta minus decay?
- gxc9800
- · Replies 6 ·
Compare forces exerted between the Tennis Racquets
- DanielC90
- · Replies 6 ·
What is the velocity of standing waves in a pipe based on resonance distances?
- Karol
- · Replies 1 ·
Free Body Diagram of a Truck with a Box
- Cinnamon
- · Replies 4 ·
2D Momentum Question on pool balls
- SpyIsCake
- · Replies 3 ·
What is the effective spring constant and velocity of a bungee jumper?
- toad22
- · Replies 1 ·
Heating 200 liters of water from 10°C to 65°C with coal gas
- Karol
- · Replies 8 ·
Using a prony brake to determine motor torque
- dotmatrix
- · Replies 12 ·
What is the correct frequency for a 20 cm pipe with open and closed ends?
- Karol
- · Replies 1 ·
Friction Force of a rubber ball
- I <3 Physic
- · Replies 3 ·
Newton's 2nd Law: Find Forces w/ Constant Speed, 38°
- c2015cg
- · Replies 5 ·
Calculating Average Distance Diffused
- fishes
- · Replies 2 ·
How can internal energy change if no heat flows in an adiabatic process?
- Arun Raja
- · Replies 2 ·
Electric Flux through a sphere from a point charge
- deedsy
- · Replies 2 ·
Field due to point charges - extremely strange error
- Ngineer
- · Replies 7 ·
Find Equilibrium Point of Large L Pendulum Suspended at Radius R
- PeteSampras
- · Replies 1 ·
Longitudinal standing waves in gas
- Karol
- · Replies 1 ·
Calculating Capillary Amount Given Aorta Blood Flow
- casualdehyde
- · Replies 1 ·
Circuit consists only of voltage source and current source
- needhelp171
- · Replies 20 ·
Solving for Speed on a Roller Coaster's Top of Hill
- SilverAu
- · Replies 6 ·
Energy released by condensing steam back to liquid water
- corydm
- · Replies 1 ·
Spherical Charge Distribution - Electric Field Intensity
- deedsy
- · Replies 3 ·
Calculating Magnetic Force on a Moving Charge
- camel-man
- · Replies 9 ·
Relativistic momentum conservation
- Frank Einstein
- · Replies 8 ·
Why does potential rise equal potential drop in an ideal circuit?
- AGGENGR
- · Replies 3 ·
Using Freudenstein's equations to find instantaneous centers in a 4 bar linkage
- Luchekv
- · Replies 9 ·
Identify emission line spectrum
- desmond iking
- · Replies 16 ·
Thermo physics (Phase diagram Phase changes)
- tvtokyo
- · Replies 1 ·
What Mistakes Are Made in Solving Damped Oscillator LCR Circuit Problems?
- pondzo
- · Replies 3 ·
Solving Gauss' Law for Electric Field Around Spherical Shell
- radiator0505
- · Replies 7 ·
Finding Unknown Currents in a Two-battery Complex Circuit
- gerfken
- · Replies 2 ·
What is the charge on the insulating sphere?
- Maltesers123
- · Replies 5 ·
Calculating the Increase in Energy for a Capacitor with Concentric Spheres
- renegade05
- · Replies 2 ·
Differential equation for an LCR circuit
- pondzo
- · Replies 9 ·
How Does the Tension in a Child's Neck Muscles Change on a Water Slide?
- nate9519
- · Replies 3 ·
Classic Waves Interference Problem with Wedges
- alingy1
- · Replies 17 ·
Is this the correct set up for the electric field?
- ghostfolk
- · Replies 2 ·
How Do Horizontal and Vertical Movements Differ in Subducted Plates?
- neongoats
- · Replies 1 ·
What percentage of the bits on a CD is dedicated to error-correction?
- hitemup
- · Replies 4 ·
Spherical Aberration Estimation
- Parmenides
- · Replies 1 ·
Free body diagram for accelerating truck with sliding box
- Phoenix23
- · Replies 1 ·
Mass of a weight attached to a body
- AndrejN96
- · Replies 8 ·
Heisenberg momentum uncertainty
- leehufford
- · Replies 4 ·
Confusion over the reduction of force for pulleys
- Calpalned
- · Replies 1 ·
Can Static Friction Keep a Child Safe on a Rotating Cone Ride?
- nate9519
- · Replies 9 ·
Finding equivalent resistance using KVL and KCL with a 2.3Ω resistor
- mikil100
- · Replies 10 ·
Sphere suspended in accelerating truck on a hill
- nate9519
- · Replies 4 ·
Velocity of radio waves question
- max1995
- · Replies 2 ·
Final temperature of 100g ice at -15°C mixed with 200g water at 25°C
- jonan_evans
- · Replies 6 ·
Having trouble with significant figures
- hitemup
- · Replies 2 ·
When does a motorbike catch a car accelerating ahead?
- APett
- · Replies 9 ·
Ping pong and golf ball dropped in vacuum: same acceleration or velocity?
- Max Leo
- · Replies 5 ·
Conservation of Energy of a slide
- hlha227
- · Replies 10 ·
Time of Fall for a Pencil Dropped at an Angle
- Satvik Pandey
- · Replies 27 ·
Deriving Units for Current Density - J=I/A Length
- AGGENGR
- · Replies 4 ·
Newton's Laws of Motion (Is my theory correct?)
- math989
- · Replies 2 ·
Equivalent Capacitance in a circuit
- carpelumen
- · Replies 7 ·
Energy levels for mass confined to 1D box
- SalfordPhysics
- · Replies 4 ·
This is about MOMENTUM (Practice Test #3 Question #1)
- gcombina
- · Replies 10 ·
Does Swapping Linear and Non-Linear Springs in Series Change System Behavior?
- user977784078
- · Replies 3 ·
Kinetic energy and friction force?
- Jessica Sweet
- · Replies 9 ·
Work needed to move opposite charges farther apart
- mikil100
- · Replies 5 ·
Linearization of non linear systems
- theBEAST
- · Replies 1 ·
Net magnetic field due to two wires
- carpelumen
- · Replies 1 ·
Archived Are you wondering what you've gotten yourself into with physics?
- ezfzx
- · Replies 5 ·
Archived Find MathType Resource: Answers Here
- Oneatatime
- · Replies 3 ·
Potential energy of a particle in a system
- Claudia Sanchez
- · Replies 2 ·
Newton's Laws of Motion Question
- I <3 Physic
- · Replies 1 ·
Moment of inertia about a ceiling fan?
- physicsbaig
- · Replies 13 ·
Work done by kinetic friction force without coefficient?
- Jessica Sweet
- · Replies 9 ·
Why Does Bulb A Dim When the Switch Closes in a Circuit with Real Batteries?
- Feodalherren
- · Replies 5 ·
Conservative force and potential energy
- coconut62
- · Replies 3 ·
Train with constant acceleration, catching it with constant velocity?
- timnswede
- · Replies 12 ·
Minimum force to push a 200 kg refrigerator across a wooden floor
- mememe1245
- · Replies 14 ·
Baseball rolled off 20-foot roof into pool
- Elle1121
- · Replies 3 ·
Free particle wave function behavior
- lants
- · Replies 5 ·
Finding the tension in a rope when acceleration is balanced
- Shadow236
- · Replies 7 ·