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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Find the resistance between the top and bottom faces of the cylinder
- mba444
- · Replies 11 ·
What Time Does the Wheel Come to a Stop?
- bluejade
- · Replies 2 ·
Is Kinetic Energy Derived from an Integral and Work Done?
- RoryP
- · Replies 3 ·
Does radiation pressure depend on the speed of the object?
- vertyu
- · Replies 1 ·
Question Newton's second Law: F= M * A
- Mark1991
- · Replies 1 ·
How Does a Painter Balance on a Board While Painting?
- turandorf
- · Replies 7 ·
Radiant Energy Absorbed by Person's Head with Hair
- grandprix
- · Replies 2 ·
How Many Lenses Generate a Real Image?
- Mark1991
- · Replies 8 ·
What Initial Speed Launches a Projectile to 270 km on the Moon?
- wadini
- · Replies 5 ·
Why Is Amplitude Maximal at w = 1/sqrt(LC)?
- dipset24
- · Replies 1 ·
How Does Friction Affect Motion on a Rotating Car Platform?
- Patta1667
- · Replies 1 ·
Finding resistance in a resistor?
- ninjadrummer8
- · Replies 1 ·
Force between two parallel electric dipoles with Coulomb's law
- kyrax
- · Replies 3 ·
Weight of barge on a bridge canal/acqueduct
- bigboss
- · Replies 17 ·
Angular Velocity; Given Coefficient of Friction and Radius
- Aljazera
- · Replies 7 ·
Why are truss structures and stranded cables stronger?
- codz30
- · Replies 1 ·
Minimum MgF2 film thickness for strong reflection at 531 nm
- Prophet029
- · Replies 3 ·
Buoyancy problem and density of ice
- ash4741
- · Replies 14 ·
Why can dot products be negative if magnitudes are always positive?
- Pupil
- · Replies 4 ·
What Is the Initial Temperature of Copper in a Mixed Substance System?
- bigboss
- · Replies 5 ·
How Deep is the Ocean Using Ultrasonic Waves?
- smillphysics
- · Replies 3 ·
Work energy theorem to find the maximum compression
- negatifzeo
- · Replies 2 ·
How can I calculate the mutual inductance between two rectangular loops?
- chrischros
- · Replies 1 ·
What is the Tension at the Ends of a Hanging Rope?
- Patta1667
- · Replies 6 ·
Is the Net Work Done Positive and Does It Function as a Heat Engine?
- groundhog92
- · Replies 1 ·
Finding the launch angle for a projectile and whether a glass tips over
- donotremember
- · Replies 6 ·
Electron moving through a uniform magnetic field
- bioradical
- · Replies 1 ·
Conservation of Momentum Set-Up
- alexander_i
- · Replies 2 ·
What is the Density Ratio of a Submerged Ball in a Fluid?
- MyNewPony
- · Replies 2 ·
Non-uniform Hanging Bar: Finding the Center of Mass
- typeinnocent
- · Replies 11 ·
Why do two methods for time to collision give different results?
- C_Ovidiu
- · Replies 7 ·
Amusement Park Physics: Solving for Friction Force in a Spinning Cylinder
- PeterPumpkin
- · Replies 3 ·
Tangent force on a rotating rod
- abomination5
- · Replies 2 ·
Calculating Time to Reach Initial Velocity from Acceleration-Time Graph
- Mandavi
- · Replies 3 ·
Transmission Line - Solve for frequency subject to phase angle
- Andrusko
- · Replies 9 ·
Calculating Displacement Vectors for Jasmine and Jack's Bike Rides to School
- 123phy
- · Replies 13 ·
Calculating Horizontal Force to Accelerate Shopping Cart
- Dave25
- · Replies 13 ·
Bullet embedded in wood on spring: finding spring constant and SHM properties
- groundhog92
- · Replies 4 ·
Pendulum with adjustable lengths
- dipset24
- · Replies 1 ·
Simple Harmonic Motion and hung spring
- grandprix
- · Replies 8 ·
Temperature and Heat - what am i doing wrong?
- grandprix
- · Replies 3 ·
Do two decelerating trains heading toward each other collide?
- Dave25
- · Replies 8 ·
What Is the Net Magnitude of the Electric Field at y = 0.200m?
- Digdug12
- · Replies 1 ·
Buoyance - pressure on brick immersed in water
- bigboss
- · Replies 5 ·
How Do You Calculate Neutron Flux in Neutron Activation Analysis?
- cortiver
- · Replies 2 ·
Accelerating wedge with friction
- Patta1667
- · Replies 9 ·
Electrical Potential Difference between parallel plates
- flak-spammer
- · Replies 8 ·
What is the Height of the Cart When It Stops Rolling Up an Inclined Board?
- Walid11
- · Replies 9 ·
Mechanical Vibrations (Pendulums)
- dipset24
- · Replies 2 ·
Minimum speed for ball to clear hemispherical rock of radius R
- blackboy
- · Replies 26 ·
What is the Speed of the Cart Launched by a Spring?
- Walid11
- · Replies 1 ·
Why Is My Calculation of the Center of Mass for a Uniform Wire Incorrect?
- toastie
- · Replies 1 ·
Solving a Kirchhoff's Law Problem: Finding the Equation for a Highlighted Path
- ninjadrummer8
- · Replies 4 ·
Force on 3rd Charge w/ 7.98nC: 3.17E-5N
- Digdug12
- · Replies 1 ·
Mountain climber Equilibrium Question
- simondsaid
- · Replies 2 ·
Weather balloon radius at liftoff using ideal gas law
- PrideofPhilly
- · Replies 4 ·
Temperature Change: Sum of Daily Changes
- PrideofPhilly
- · Replies 3 ·
Coefficient of Restitution between two balls
- bijou
- · Replies 3 ·
Calculate Coulombs Law: Charge, Current, and Power in Electrical Circuits
- ydna7
- · Replies 4 ·
Calculating Resonant Frequencies of Closed Air Columns
- qszwdxefc
- · Replies 4 ·
Coefficient of friction in snooker shots using kinematics
- bijou
- · Replies 2 ·
Finding kinetic friction coefficient for block 2M on a table
- JUniTo24
- · Replies 3 ·
Power Problem: Accelerating a Car over Track Distance
- twituksh12345
- · Replies 3 ·
How Do Kinetic and Potential Energies Change During a Ball's Ascent?
- nikan_ange
- · Replies 3 ·
Pulley and Mass on an Inclined Ramp
- theuniverse
- · Replies 3 ·
Conservation of kinetic energy and momentum in a collision
- sugaJ
- · Replies 2 ·
Does a toboggan's height on a frictionless slope depend on the slope angle?
- Amar.alchemy
- · Replies 9 ·
Calculating Charge Transfer between Objects
- alithefickle
- · Replies 3 ·
What is the Fermi energy of metallic potassium at 0K?
- joel.martens
- · Replies 3 ·
Classical Mechanics - Pulleys System
- TomAlso
- · Replies 3 ·
How Does a Capacitor's Energy Change Over Time?
- ninjadrummer8
- · Replies 1 ·
How can capacitive reactance be zero for no capacitor?
- bobaustin
- · Replies 4 ·
Why both teams pull equally hard but one team wins tug of war
- annatar
- · Replies 2 ·
How Do You Calculate Tension in a String with Mass and Acceleration?
- rchenkl
- · Replies 1 ·
Can an atom absorb a photon with non-resonant energy?
- Linday12
- · Replies 2 ·
What causes an object's acceleration to increase or decrease?
- bluejade
- · Replies 3 ·
Cube collision (with a pivot) and Angular momentum
- fblin
- · Replies 3 ·
Speed of car with changing mass problem
- bodensee9
- · Replies 1 ·
Coin sliding on spinning record with friction
- groundhog92
- · Replies 1 ·
Find the tensions in the strings
- MyNewPony
- · Replies 2 ·
Friction Problem with Pulley System: Determining Acceleration and Force
- groundhog92
- · Replies 1 ·
How Do You Calculate State Changes in a Monatomic Gas Thermodynamic Cycle?
- rchenkl
- · Replies 1 ·
What Are the Core Postulates of Einstein's Special Theory of Relativity?
- rchenkl
- · Replies 5 ·
Work Done By Friction on a Circular Ramp
- MyNewPony
- · Replies 2 ·
Banked Frictionless Curve, and Flat Curve with Friction
- Digitalx04
- · Replies 1 ·
Linear momentum head on collision
- desixcutie04
- · Replies 8 ·
3 capcitors (series? parallel?) i cant tell
- ninjadrummer8
- · Replies 3 ·
Calculating Velocity of Bullet at Ground Impact
- theuniverse
- · Replies 1 ·
Determining drift velocity of electrons at specific temperature
- mlbqd3
- · Replies 1 ·
Methods for measuring the density of a swimming pool water sample
- JPhysic
- · Replies 4 ·
Why Is Cosine Used to Calculate Induced Voltage in a Conductor?
- sponsoredwalk
- · Replies 1 ·
Error propagation for acceleration from d = ½at²
- Digitalx04
- · Replies 4 ·
Electricity- Power dissipation formula question
- cambalacus
- · Replies 2 ·
Calculating Gravity Using Angular Speed and Weight
- bodensee9
- · Replies 2 ·
How Much Water Escapes from a Pressurized Steel Vessel?
- 2020vision
- · Replies 10 ·
Rolling disk with point mass on edge
- vladimir69
- · Replies 4 ·
What is the dielectric constant of the slab on a parallel plate capacitor ?
- mba444
- · Replies 5 ·
How does Fermat's Principle apply to the concept of Heroes?
- nokia8650
- · Replies 2 ·
Fundamental Frequency of nylon string
- rchenkl
- · Replies 9 ·
Acceleration in one dimension
- yitriana
- · Replies 2 ·