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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Finding angular velocity of homemade motor from battery specs
- spinflick
- · Replies 3 ·
Newtonian fluid mechanics: Navier-Stokes equation
- Feodalherren
- · Replies 3 ·
What is the Correct Free Body Diagram for a Pulley System?
- Goofball Randy
- · Replies 6 ·
Tension in string at lowest point when bob just completes one rotation
- Jimmy87
- · Replies 8 ·
Fluids Viscosity: Calculating with a Flat Plate Viscometer
- suspenc3
- · Replies 3 ·
Why use 0 degrees for one of two forces acting at an angle?
- Moose100
- · Replies 9 ·
Change in potential energy of proton between two point charges
- KayDe
- · Replies 3 ·
Finding wavelength from phase difference between two points on a string
- hobmarcus
- · Replies 4 ·
What mistake did I make in my time-dependent force problem solution?
- Loststudent22
- · Replies 10 ·
Newton's Second law with Friction
- SnakeDoc
- · Replies 4 ·
Can Euler-Lagrange Equations Explain Mirages?
- Jillds
- · Replies 2 ·
Maximum kinetic friction-combined with a projectile problem
- Poetria
- · Replies 2 ·
How do I apply KCL and Ohm's Law to find nodal equations?
- physior
- · Replies 13 ·
What is the potential difference across a sensitive instrument?
- gracy
- · Replies 47 ·
Trolley accelerated by 50 N then 20 N force
- **Mariam**
- · Replies 7 ·
Is the Scattered Voltage Data in My Experiment a Result of Measurement Error?
- physicsnerd26
- · Replies 13 ·
Finding resistance and power from capacitor voltage equation
- samjohnny
- · Replies 2 ·
Tension in a chain partly on a smooth sphere
- mooncrater
- · Replies 4 ·
*Net* thermal energy exchanged?
- Greg777
- · Replies 1 ·
How do I normalize a wavefunction in three dimensions?
- Lily Wright
- · Replies 1 ·
Path of Light in Time-Varying Refractive Index: Straight or Curved?
- arpon
- · Replies 3 ·
Solving a Container Pressure Problem
- V711
- · Replies 10 ·
Time taken for energy to drop 95% in damped SHO
- Phynos
- · Replies 3 ·
What is the correct formula for acceleration for SHM
- dilton_8000
- · Replies 6 ·
Force of Gravitation, Determining dM
- TimeInquirer
- · Replies 6 ·
Velocity of fluid in venturi tube
- Dennydont
- · Replies 1 ·
Work done isothermal, adiabatic ideal gas
- Samuelriesterer
- · Replies 1 ·
Conservation of angular momentum of an an engine flywheel
- henry3369
- · Replies 1 ·
What is the ratio of t1 to t2 for a particle executing SHM?
- Saurav.1905
- · Replies 3 ·
Electric field of solid cylinder inside hollow concentric cylinder
- Zanker
- · Replies 1 ·
Resonance frequency of a spring with 9 mm elongation
- sugz
- · Replies 17 ·
Estimates on accelerations for different objects
- samrox126
- · Replies 4 ·
What Was the Initial Frequency of the Trumpet Player?
- sugz
- · Replies 2 ·
For a circular motion period to length and mass question.
- Blobikins
- · Replies 2 ·
Calc Errors: Calculating Tolerance in Physics
- Jimmy87
- · Replies 1 ·
Motion of two constrained masses
- PhMichael
- · Replies 1 ·
What is the magnitude of the force?
- nmi13
- · Replies 1 ·
What is the significance of F less than Fmax in the strong nuclear force graph?
- Jimmy87
- · Replies 3 ·
Is the ball's speed increasing?
- Westin
- · Replies 3 ·
Probability distribution for a rotating gas
- physiks
- · Replies 14 ·
Can a thermodynamic heat engine include all these processes?
- distalphalanx
- · Replies 2 ·
Parallel plate capacitor with glass dielectric inserted between plates
- samjohnny
- · Replies 11 ·
A ball rolls without slipping in a cylindrical trough
- Philethan
- · Replies 9 ·
Where is the electric field zero
- fallenshadow95
- · Replies 1 ·
Viscosity of liquid for falling sphere viscometer
- Dennydont
- · Replies 6 ·
Finding Thevenin Voltage in a Complex Circuit
- sugz
- · Replies 6 ·
Mechanics (Non-inertial systems and Fictitious Forces)
- Physicstcd14
- · Replies 2 ·
Understanding Electrostatic Charges: A Short Quiz
- Donald Fisher
- · Replies 4 ·
What is the resultant angle of three forces acting on an object?
- goonking
- · Replies 12 ·
Particle on a slope with friction question
- Jackelkes95
- · Replies 6 ·
Finding the *Time* it takes for yo-yo to travel 1 meter?
- Eugene Han
- · Replies 19 ·
Newton's Second Law - Polar Coordinates
- Rectification
- · Replies 6 ·
Conservation of Mechanical Energy on a Roller Coaster
- Foopyblue
- · Replies 11 ·
How Do You Calculate the Velocity After a Bullet Embeds in a Block?
- Westin
- · Replies 1 ·
The period of the spring without ignoring its mass
- Philethan
- · Replies 7 ·
Electric Field Work on Moving Charge
- david84
- · Replies 1 ·
Current through capacitor-resistor circuit before and after switch closure
- timnswede
- · Replies 6 ·
Proportions Projectile Motion Problem
- gg5467
- · Replies 1 ·
Conservation of Momentum with Collisions
- Sadiebunkins
- · Replies 1 ·
Calculating Mass using F=ma and Friction
- Drew552
- · Replies 27 ·
Alculate the x-component of the electric field
- ybad
- · Replies 5 ·
Calculating Elastic Force and Projectile Motion: Energy/Work Questions
- Madeline1844
- · Replies 5 ·
Simple Harmonic Easy Qualitve problem, something I'm not getting
- Jediknight
- · Replies 2 ·
Ball launched from 1.9m at 40 m/s, 10°: why is flight time 3.3s not 1.65s?
- Calpalned
- · Replies 1 ·
Statics Problem istributed Loads
- Chandasouk
- · Replies 3 ·
Simple Harmonic Motion oscillation amplitude
- sugz
- · Replies 5 ·
Stored Energy Difference Between Capacitors
- 8008jsmith
- · Replies 7 ·
Can Forces Acting on an Object Be Zero?
- Nick PG
- · Replies 5 ·
Acceleration question -- Deceleration of a baseball being caught by a player
- Rasofia
- · Replies 4 ·
Find apogee distance, speed, and T of Earth satellite
- oddjobmj
- · Replies 12 ·
Gravity Problem two shells, one inside other on particle
- Jediknight
- · Replies 5 ·
Mechanics, question about generalized coordinates
- Coffee_
- · Replies 9 ·
Angle of total acceleration of an object in circular motion
- TheKShaugh
- · Replies 2 ·
How Does Pendulum Motion Affect Work and Kinetic Energy Calculations?
- stateofdogma
- · Replies 31 ·
Aeroplane Projectile Homework: Determine Velocity
- Ahmad Hossain
- · Replies 11 ·
What Is the Fake Gravity on a Circular Space Hotel Orbiting Earth?
- anthonyslvtr
- · Replies 1 ·
Simple circular motion conceptual question
- RJLiberator
- · Replies 14 ·
Suppose that you are standing on a train accelerating at 0.1g
- Gina Alaniz
- · Replies 10 ·
Magnetic field at the center of a loop
- Nicki
- · Replies 4 ·
The coefficient of friction by spring compression
- Teacup_in_space
- · Replies 1 ·
Photon Emission and Energy Levels
- Sheepwall
- · Replies 1 ·
Negative sign in Biot-Savart calculation for circular loop field
- Paintjunkie
- · Replies 23 ·
Why are larger transformers more efficient than smaller ones?
- Alexander Max
- · Replies 2 ·
Vertical post held by two cables - angle calculation
- Ryan Lau
- · Replies 5 ·
What Was the Initial Speed of the Freight Car?
- Meagan
- · Replies 11 ·
What is the minimum tension in the string?
- Ryan Lau
- · Replies 18 ·
Equilibrium position of a charge between other 2 charges
- Bedeirnur
- · Replies 12 ·
Equipotential surface of a infinite plane?
- squirrelschaser
- · Replies 1 ·
Horizontal Projectiles. Degree or Radian mode in calculator?
- Rasofia
- · Replies 1 ·
I knowing what i'm looking for -- alpha particle colliding with lead nucleus
- Eric Peraza
- · Replies 5 ·
Statics Question -- Bar and roller resting on a circular surface
- dksland
- · Replies 5 ·
Converting Chord Length to Radians: A Confusing Concept?
- Isquarey
- · Replies 8 ·
Using Energy Equations to find Final Velocity
- Foopyblue
- · Replies 5 ·
Wave Velocity Calculation: y = 0.02 sin[ pi(30x - 400t)] in SI units
- sugz
- · Replies 2 ·
Special theory of relativity, a collision between two partic
- alizeid
- · Replies 4 ·
(Answered) Finding new potential difference after switch is closed?
- 190793
- · Replies 23 ·
Finding the Maximum Positive Transverse Velocity of a Transverse Wave
- sugz
- · Replies 6 ·
How can i find the coefficient of kinetic friction?
- ciara0682
- · Replies 17 ·
Phase of simple harmonic motion at t=2s for x=5sin(πt+π/3)
- sugz
- · Replies 7 ·