Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Finding friction force on a dragster from acceleration and driving force
- ital_dj
- · Replies 2 ·
Waves: velocity, frequency, wavelength
- bleucat
- · Replies 1 ·
True or false: index of refraction and relativistic velocity addition
- dietcokemaste
- · Replies 1 ·
Net Force of object changing velocity
- ital_dj
- · Replies 6 ·
How to Solve a Gauss' Law Problem in a Spherical Region?
- dpd069
- · Replies 2 ·
Calculating Work: Pushing a Block Up a Frictionless Incline
- featherua08
- · Replies 2 ·
What is the relationship between work, power, and lifting an object?
- MoreZitiPlease
- · Replies 4 ·
What font should I use for lab reports?
- MoreZitiPlease
- · Replies 1 ·
Conservation of energy of an elevator cable
- iamkristing
- · Replies 5 ·
Challenging Problem - System of Masses - Try It
- coolchewy
- · Replies 2 ·
Electric Potential and Spheres
- cjosephson
- · Replies 4 ·
What Is the Capacitance of a Parallel-Plate Capacitor with Circular Plates?
- physicsbhelp
- · Replies 6 ·
Some more magnetic field/induction questions
- cse63146
- · Replies 26 ·
Electric Conductors and Storage
- sparkscience
- · Replies 2 ·
How Is Work Calculated in a Diesel Engine Thermodynamic Cycle?
- EngNoob
- · Replies 1 ·
Calculating Impulse and Average Force for a Ball Dropped on a Floor
- iamkristing
- · Replies 2 ·
Recording power and lumens for light bulbs.
- pebbles
- · Replies 1 ·
Finding inner radius a to minimize max electric field in coaxial cable
- jesuslovesu
- · Replies 1 ·
How Do Equilibrium Conditions Relate to Forces in a Bridge Member?
- student45
- · Replies 3 ·
Optics: Distance of Key in swimming pool
- circle_square
- · Replies 2 ·
NPN Transistor: Facts, Power Supply, Queisecent Point
- sanado
- · Replies 1 ·
Can You Calculate the Pinger's Angle Using Hydrophone Data?
- Number2Pencil
- · Replies 2 ·
Skier gliding on horizontal snow after descending a hill
- netwerky
- · Replies 3 ·
Static Equilibrium - board problem
- Seraph404
- · Replies 1 ·
Man Walks Up Stairs: Work Done?
- cronusmin
- · Replies 5 ·
Why Does Plate Separation Affect Capacitance?
- Djenko
- · Replies 2 ·
Calculating Maximum Lead Shot Capacity of Tin Can
- drobtj2
- · Replies 1 ·
Finding net force from three point charges
- petern
- · Replies 3 ·
Beam Deflection in a Television Tube
- daimoku
- · Replies 2 ·
Making current and voltage in phase
- snoweangel27
- · Replies 1 ·
Simple Harmonic Motion of a gun
- peaches1221
- · Replies 5 ·
Why Does the Equation mg = mv^2/r Work for Calculating Satellite Altitude?
- ys2050
- · Replies 1 ·
Some magnetic field/induction questions
- cse63146
- · Replies 13 ·
Calculating Transverse Velocity of a Star
- grscott_2000
- · Replies 2 ·
How Do You Calculate Tension in a Wrecking Ball Support Cable?
- BMK
- · Replies 3 ·
Zero Torque and Static Equilibrium pulley problem
- just.karl
- · Replies 1 ·
Two-stage Carnot engine efficiency with three temperatures
- LandOfStandar
- · Replies 6 ·
What is the Time Constant for a Capacitor Circuit with Changing Capacitance?
- jcpwn2004
- · Replies 17 ·
How Do You Calculate Young's Modulus from Wire Stretching Data?
- cstout
- · Replies 2 ·
Motion in two dimensions question. At wit's end.
- Hekmat123
- · Replies 4 ·
Rotational kinematics and energy
- dethbyphysics
- · Replies 2 ·
Rolling Motion without slipping Problem
- adca14
- · Replies 3 ·
Magnitude of change in linear momentum
- studypersist
- · Replies 3 ·
How Do You Calculate the Electric Force on a Charge at the Corner of a Square?
- bastige
- · Replies 9 ·
Calculating Photon Detection in Radiation Physics with 30 Degree Incident Angle
- _Andreas
- · Replies 2 ·
Ridid body equilibrium, tension in hanging wires
- clope023
- · Replies 7 ·
Solving Pushing Two Blocks Kinetic Energy
- nitrik
- · Replies 1 ·
Optical process in semiconductors
- Defennder
- · Replies 2 ·
What is the Limiting Velocity of an Electric Toy Car with Constant Power?
- alice137
- · Replies 7 ·
Time dilation on Helios satellite traveling to Jupiter
- wowolala
- · Replies 1 ·
Heat transfer of stainless steel
- bill nye scienceguy!
- · Replies 1 ·
Energy to heat 100 m³ of diatomic air by 1°C in insulated house
- ~christina~
- · Replies 1 ·
What is the magnitude of the Reaction Force?
- jj8890
- · Replies 1 ·
Calculating Magnetic Field of a Toroid Using Ampere's Law
- snipaj9696
- · Replies 1 ·
Effect of Melting Bob on Pendulum Time Period?
- proyasha
- · Replies 9 ·
Solving Capacitor Questions with Different Plate Areas
- jcpwn2004
- · Replies 8 ·
Easiest Cylinder to Balance - angular acceleration
- mike115
- · Replies 1 ·
Minimum initial velocity for box to reach skier on 30° incline
- ochatesme
- · Replies 2 ·
Finding amplitude in SHM for a mass on a spring
- chukie
- · Replies 3 ·
How Strong is the Magnetic Field of a Bar Magnet at a Distance?
- cse63146
- · Replies 4 ·
What is the induced emf in a coil in a changing magnetic field?
- cse63146
- · Replies 17 ·
Magnitude of force. solving for x
- bastige
- · Replies 4 ·
Simple Energy conservation, PE = KE + PE
- Scrum
- · Replies 1 ·
How Do You Calculate the Final Temperature of a Metal and Water Mixture?
- defult986
- · Replies 1 ·
How Does Light Travel Through Different Media?
- BuBbLeS01
- · Replies 7 ·
Car driving around a banked curve (with friction)
- TA1068
- · Replies 3 ·
What is the width of the aperture?
- BuBbLeS01
- · Replies 1 ·
Solve Ray Tracing Problem: Image Location for 6.3 cm from Convex Mirror
- BuBbLeS01
- · Replies 1 ·
Elasticity and simple harmonic motion
- peaches1221
- · Replies 1 ·
Max Angle of Incidence for Light Ray in Water-Glass System
- BuBbLeS01
- · Replies 2 ·
Deriving angular frequency for simple harmonic motion
- AlexYH
- · Replies 2 ·
Conceptual Question on Net Torque
- klopez
- · Replies 6 ·
Moment of Inertia/ Kinetic Energy of ice skater
- klopez
- · Replies 4 ·
Potential Energy and energy conservation
- kyin01
- · Replies 2 ·
How Do You Calculate Current in a Half-Full Gasoline Gauge?
- potato987
- · Replies 1 ·
Solving String Tension: Wavelength, Speed and Frequency
- gillyr2
- · Replies 4 ·
Strength of electrostatic force
- bastige
- · Replies 3 ·
Copper penny failling between poles of magnet
- bishy
- · Replies 3 ·
Train Question: Max Acceleration 0.756m/s^2
- madahmad1
- · Replies 2 ·
What does x = 1/2gt² + v₀t + x₀ represent and what is g?
- hamudi786
- · Replies 11 ·
What are the effects of different braking scenarios on cars and occupants?
- Keith Warron
- · Replies 2 ·
Lets say you have a system with four capacitors(c1,c2,c3,c4)
- eyehategod
- · Replies 3 ·
Curious Case of the Spinning Flywheel Briefcase
- louie3006
- · Replies 3 ·
Calculate Magnitude of Torque for Flywheel
- sealedhuman77
- · Replies 1 ·
Is Ball Bouncing Considered Simple Harmonic Motion?
- bpw91284
- · Replies 4 ·
Center of Mass and Moment of Inertia
- sealedhuman77
- · Replies 3 ·
Rotational Energy of 3 Point Masses along a Rigid Rod
- shenwei1988
- · Replies 1 ·
Relativity and energy conservation
- imphat
- · Replies 3 ·
Rectangular coil current problem
- obot
- · Replies 3 ·
Energy and momentum + radioactive decay
- imphat
- · Replies 5 ·
Why is emitter current larger than collector current in an NPN transistor?
- sanado
- · Replies 13 ·
Solving Mass of N Loss from Cu at 20C to 77.3K
- ~christina~
- · Replies 2 ·
Block on inclined plane with spring: find particular solution and amplitude
- smithy100
- · Replies 1 ·
Physical Principles of DVD Technology
- Jaar-Gilon
- · Replies 1 ·
Finding moments of pulleys with mass and tensions.
- jrrodri7
- · Replies 6 ·
Metal tube instrument notes are flat and out of tune
- WinPin
- · Replies 16 ·
Clay projectile sticking to wooden block with friction
- Sheneron
- · Replies 6 ·
Why isn't the amplitude at x = 6 cm equal to zero?
- chukie
- · Replies 1 ·
Finding initial velocity of airtrack glider from displacement and time
- valdez237
- · Replies 1 ·
Solving the differential equation dy/dt = t²y(t)
- janemba
- · Replies 10 ·