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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What is the most efficient way to solve a wheel and axle system problem?
- chikis
- · Replies 15 ·
Why Is Friction Opposite to Wheel Acceleration in Rolling Motion?
- 1MileCrash
- · Replies 2 ·
Why Does Heat Stop Flowing When Q=TS in Thermal Equilibrium?
- zezima1
- · Replies 5 ·
How far the aircraft slides before it comes to rest ?
- Colin19
- · Replies 3 ·
Why does a voltmeter read zero across an inductor immediately after a switch closes?
- theBEAST
- · Replies 4 ·
Physics Finding Total Distance?
- RichardT
- · Replies 32 ·
How is the Time Constant Calculated in an RC Circuit?
- theBEAST
- · Replies 3 ·
System under matrix addition (+) and matrix multiplication (.) is a field
- sam_0017
- · Replies 1 ·
Two cups are filled with the same level of Water - one has ice cubes.
- dnkim64
- · Replies 3 ·
Calculate Height of Building from Velocity-Time Graph
- azizlwl
- · Replies 6 ·
Resonant frequency and capacitive reactance in LC circuit
- aurao2003
- · Replies 3 ·
Heat exchange between ice and water reaching equilibrium
- FPIsaac
- · Replies 2 ·
Why does my solid cylinder rolling problem give 29.24° instead of the right answer?
- Anya91
- · Replies 6 ·
Block moving on a frictionless loop
- phosgene
- · Replies 2 ·
Forces On A Ramp Finding Acceleration Question?
- justinh8
- · Replies 6 ·
2 Parallel connected cables resistance.Going from Diamater (mm) to m^2?
- Totter
- · Replies 7 ·
Force on electron outside solenoid with changing current
- Simon777
- · Replies 1 ·
Have manometer given density and mass
- p.mcnamara
- · Replies 1 ·
Conservative/ Non conservative forces problem
- shaggyace
- · Replies 1 ·
Calculate the Motor Efficiency when?
- Totter
- · Replies 1 ·
Electromagnetism problem-ΣE on a point
- cotsiospower
- · Replies 3 ·
Describe how to show charge is proportional to pd on a capacitor
- jsmith613
- · Replies 16 ·
What is the Radius of Bohr Atom Orbitals?
- aisha1929
- · Replies 1 ·
Mass spectrometer - no deflection
- jsmith613
- · Replies 14 ·
Having Trouble Calculating Moments in Physics?
- Taylor_1989
- · Replies 3 ·
How to Calculate the Surface Area for Nickel Plating with Given Parameters?
- Totter
- · Replies 1 ·
Accelaration in a vertical circle
- mazz1801
- · Replies 2 ·
Proving T=H+q*h in a Catenary Spanned Cable
- dirk_mec1
- · Replies 7 ·
Potential Differences on an Electrical Circuit
- forestmine
- · Replies 8 ·
Why Is Some Energy Wasted in a Boiler System?
- MuhammadIslam
- · Replies 8 ·
Calorie to Heat Conversion: Cheese Food Experiment
- jaedonsmami23
- · Replies 3 ·
Angular Momentum(Turntable and blob collision)
- MRMooneyham
- · Replies 6 ·
Gravitational Potential Energy and Kinetic Energy
- tcross420
- · Replies 21 ·
Error Calculation: 1/a with Error
- jmher0403
- · Replies 1 ·
Calculating Average Force Exerted on Child Swing
- gbaby370
- · Replies 3 ·
Safety Valve/Pressure System question
- atay5510
- · Replies 3 ·
Calculating Power with Constant Velocity
- zaddyzad
- · Replies 25 ·
Find the minimum velocity for bucket in circular motion
- Tui
- · Replies 2 ·
Acceleration of atwood machine with angled mass and friction
- huzjm
- · Replies 5 ·
Double-Slit Experiment using water
- rabcdred
- · Replies 2 ·
Info hunt \ maximum frictional force
- Colin19
- · Replies 8 ·
How to Simplify Resistor Networks: Parallel and Series Connections
- thiefjack
- · Replies 1 ·
What Is the Acceleration of the Metal Bar After Closing the Switch?
- kimberlyann9
- · Replies 3 ·
What is the Resistance R for 295 Watts Dissipation in a Network of Resistors?
- QuarkCharmer
- · Replies 4 ·
Two hockey players colliding and locking skates
- nesan
- · Replies 2 ·
What Is the Force Between Plates of a Parallel-Plate Capacitor?
- jean28
- · Replies 2 ·
What is the angular size of the moon as viewed from Earth's surface?
- monke
- · Replies 8 ·
Find wavelength of a quantum of electromagnetic radiation
- trivk96
- · Replies 10 ·
Trying to verify these work relations
- creative9k
- · Replies 2 ·
Angular velocity, acceleration. and moment of inertia
- bfusco
- · Replies 7 ·
Conservation of energy involving a spring
- EEintraining
- · Replies 2 ·
What is the relationship between period, frequency, and angular velocity?
- bfusco
- · Replies 5 ·
Place a 3rd charge so net force is 0
- jakerue
- · Replies 1 ·
How Fast Should a Centrifuge Spin to Achieve Specific Acceleration?
- bfusco
- · Replies 5 ·
Calculating Particle Momentum in High Energy Physics Experiments
- fatimae
- · Replies 1 ·
What is the Tension Force and Charge of Two Separated Balls in Equilibrium?
- fawk3s
- · Replies 9 ·
Work required to assemble eight identical charged particles
- marichriaddi
- · Replies 1 ·
Show that the total relativistic energy of a proton
- duggielanger
- · Replies 4 ·
Kinematics - marbles rolling down a ramp and into sand
- jsmith613
- · Replies 7 ·
How Is v=rω Derived in the Context of Rotational Motion?
- slimnexus
- · Replies 4 ·
Travelling towards a traffic light and doppler effect.
- Lengalicious
- · Replies 1 ·
Gravitational Forces Question Tricky
- XcKyle93
- · Replies 6 ·
Question (body immersed in fluid)
- manal950
- · Replies 16 ·
A rod hanging by two strings find theta
- tullijo34
- · Replies 17 ·
SHM pendulum: different answers from energy vs geometry method
- Oz Alikhan
- · Replies 3 ·
What is the Origin of the Friction Force in Surfer's Motion on a Wave?
- Hernaner28
- · Replies 2 ·
Which of the following is vector and which is scalat
- vkash
- · Replies 4 ·
Calculating Forces and Friction in a Two-Block System with a Spring
- Leata
- · Replies 1 ·
Moment of a rod of varying thickness
- lordsnowbrood
- · Replies 15 ·
Achieve a state of static equilibrium
- Colin19
- · Replies 7 ·
Angular Velocity and Inertia in a Collision
- corey2014
- · Replies 9 ·
The rate at which a damped, driven oscillator does work
- cowey19
- · Replies 3 ·
Calculating Acceleration of a System with Two Crates on a Horizontal Surface
- Genericcoder
- · Replies 4 ·
Why Does Replacing 3.0 Ω Resistor Affect Current Through 6.0 Ω?
- Miike012
- · Replies 5 ·
Electric Potential, Capacitance and charge of a Geiger Counter
- inevitable08
- · Replies 1 ·
Calculate the angle between the displacement vector and the force vector
- Absolutism
- · Replies 3 ·
Why is P=IV giving the wrong answer for circuit question C?
- Miike012
- · Replies 7 ·
A Very, Very Interesting Problem
- thedjoker
- · Replies 1 ·
Momentum and impulse question # 2
- Ereny
- · Replies 6 ·
Electric Potential of three concentric spheres
- emailanmol
- · Replies 2 ·
Solving non-series (L)RC problems?
- jehan60188
- · Replies 2 ·
Speed of light in glass from critical angle for total internal reflection
- NickP89
- · Replies 5 ·
Prove that if A⊆B then C-B⊆C-A
- ozarga
- · Replies 2 ·
The Electric Field of a Uniformly Charged Disk
- Skoth
- · Replies 1 ·
Bullets, block, and conservation of linear momentum
- bphy
- · Replies 1 ·
Finding the Angular Velocity of a Merry-Go-Round
- PeachBanana
- · Replies 6 ·
Avogadro's Principle and number of moles + thermodynamics problem
- Awesome-o
- · Replies 1 ·
Deriving density formula for hollow cylinder
- mtje
- · Replies 1 ·
Refrigerator cycle entropy and minimum work required
- roam
- · Replies 3 ·
Thermal energy to be dissipated in an hour
- dani123
- · Replies 3 ·
Physics Forces Problem: Helicopter lifting a truck
- XcKyle93
- · Replies 2 ·
Are the 3 Resistors in Parallel? Check Here!
- Miike012
- · Replies 2 ·
Book dropped on spring conservation of energy
- EEintraining
- · Replies 9 ·
Collision between two balls, determine the speed of other ball
- dani123
- · Replies 1 ·
Centripetal force/motion experiment
- ibwm
- · Replies 10 ·
Linearization of Inverse Proportionality
- max0005
- · Replies 4 ·
What are the conclusions you can make from this graph?
- Count Duckula
- · Replies 1 ·
Momentum and kinetic energy of collision between two identical railroad cars
- dani123
- · Replies 1 ·
Oscillation and Rotation: Can You Solve These Equilibrium and Motion Problems?
- benf.stokes
- · Replies 1 ·
Find velocity of gun and bullet on frictionless surface
- dani123
- · Replies 2 ·