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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Spinning Disk (circular motion)
- Trentonx
- · Replies 3 ·
Why do dust particles stay suspended in the gas?
- nyrychvantel
- · Replies 1 ·
Electrical Field of a Charged set of Spheres
- Snowman2526
- · Replies 3 ·
What values of F make the tension zero?
- HyperSniper
- · Replies 5 ·
Thermal efficiency in a reversible cycle for an ideal gas pV diagram
- clairez93
- · Replies 14 ·
What Is the Magnitude and Direction of the Position Vector on a Merry-Go-Round?
- Shatzkinator
- · Replies 10 ·
Determining Work from E-field Graph
- Dopefish1337
- · Replies 8 ·
Pressure and Forces within Fluids
- daisy497
- · Replies 2 ·
What does the y-int of a velocity-time graph represent?
- PhysicsJunkie
- · Replies 2 ·
What Determines the Absorption or Emission of Photons in Hydrogen Atoms?
- stickplot
- · Replies 8 ·
What are those glasses that show ROYGBIV called?
- iFat
- · Replies 1 ·
Calculating Force Exerted by Laser Beam on a Mirror
- Matthaeus_
- · Replies 7 ·
Electric circuit, reversing current
- -EquinoX-
- · Replies 14 ·
Youngs modulus isnt coming out as constant
- smolly
- · Replies 8 ·
How do I Solve for t in a Projectile Motion Equation?
- Tatjana
- · Replies 2 ·
Friction of an object being pulled up/down
- Intrusionv2
- · Replies 5 ·
Why is Work Calculated as Fdcosθ Even with Gravity?
- vivekfan
- · Replies 1 ·
Solving Moment Problem with Attached Image
- aeubz
- · Replies 2 ·
Electric field from potential and coordinate
- axgalloway
- · Replies 1 ·
Magnetic field of an infinite wire
- asi123
- · Replies 3 ·
2D inelastic collision and K of CM
- sci-doo
- · Replies 1 ·
Calculating Inclination of an Air Hockey Table
- Aiko
- · Replies 2 ·
Simple Work problem with block and friction.
- TwinGemini14
- · Replies 1 ·
What Is the Electric Potential of a Conducting Sphere Surrounded by a Shell?
- bmarvs04
- · Replies 5 ·
Spring gun ball speed including spring mass
- makeAwish
- · Replies 12 ·
Two wires, where is magentic field zero?
- FuzzyDunlop
- · Replies 1 ·
Induced current magnitude and direction in a 50-turn coil
- JSapit
- · Replies 3 ·
Race car kinetic energy and friction braking distance
- Kaln0s
- · Replies 2 ·
Why Does a Car Slide Downhill at a 45 Degree Incline Despite Equal Forces?
- MRGE
- · Replies 1 ·
Free fall with horizontal velocity
- skiwolf
- · Replies 6 ·
What Power Output is Needed for a Bicyclist to Overcome Drag and Friction?
- makeAwish
- · Replies 1 ·
How Much Power Does an Elevator Motor Need to Overcome Friction?
- gansta344u
- · Replies 11 ·
The gravitational slingshot effect
- pinkerpikachu
- · Replies 3 ·
Elastic collision with conservation of energy and momentum?
- zell_D
- · Replies 5 ·
Textbook with spring sliding, use work-energy thm to solve
- makeAwish
- · Replies 1 ·
Electron/proton kinetic electric energy
- bocobuff
- · Replies 1 ·
Calculating Friction Force on a Stationary Dancer on a Drawbridge
- klm
- · Replies 22 ·
Newton's Second Law for a System of Particles
- peaceandlove
- · Replies 5 ·
Understanding Energy Related Problems in Mechanics
- zell_D
- · Replies 12 ·
Moment of Inertia of a windmill or fan
- science4peace
- · Replies 1 ·
Magnetic Field of Two Wires where is zero
- hellogirl88
- · Replies 8 ·
What is the total capacitance for the RC circuit lab problem with given data?
- xswtxoj
- · Replies 2 ·
Finding unknown resistance of a resistor using a schematic drawing
- seanmcgowan
- · Replies 15 ·
Magnetic field at a point between two current carrying wires
- synergix
- · Replies 4 ·
How Strong is the Magnetic Field Inside a Toroid?
- hellogirl88
- · Replies 6 ·
How Do You Calculate Current and Power in Parallel Resistors?
- shemer77
- · Replies 4 ·
Evaporation and condensation problem
- Rocksta
- · Replies 5 ·
Damped spring-mass system equation of motion
- bengaltiger14
- · Replies 3 ·
Calculating the Capacitance of a Semicircular Dielectric Capacitor
- ganondorf29
- · Replies 2 ·
How Can You Accurately Measure Bendiness in Objects?
- MrPickle
- · Replies 5 ·
Solving the Swing Tension: A 25kg Child's Story
- tnutty
- · Replies 1 ·
Finding stopping distance given coefficient of kinetic friction and mass
- disque
- · Replies 1 ·
Imprtant phyishcs 1-2 Equations and
- NineTHOUSAND
- · Replies 2 ·
Test Question - Pulleys and Rubberbands
- Mgeiss
- · Replies 2 ·
Resistance for a sphere in a half sphere containing liquid
- TFM
- · Replies 19 ·
Can a skidding car stop in 50 ft on a 20° incline?
- tnutty
- · Replies 5 ·
Finding the angle of an electric field with respect to an axis
- CentreShifter
- · Replies 7 ·
Solving an Easy Physics Problem: Work Done on a Truck (9120 kg)
- jabbie3
- · Replies 3 ·
Horizontal distance traveled by a package dropped from a plane at 75 m/s and 45 m height
- Falcon4
- · Replies 3 ·
Conservation of Momentum and Mechanical Energy
- TG3
- · Replies 3 ·
Velocity of cart launched by spring
- TG3
- · Replies 5 ·
Conservation of Linear Momentum and kinetic energy of explosion
- peaceandlove
- · Replies 3 ·
Work done by gravity and change in GPE for a 92.1 kg climber scaling a 33.8 m cliff
- jabbie3
- · Replies 3 ·
Work done by gravity on a snowboarder descending a 19° ramp
- jabbie3
- · Replies 4 ·
What Is the Speed of the Current in the River?
- Malgrif
- · Replies 1 ·
Can watts help determine an object's velocity from its internal force?
- bluej774
- · Replies 7 ·
How Much Force Did Josie and Charlotte Apply to the Sandbag?
- disque
- · Replies 2 ·
Understanding Capacitors: Polarization and Charge Distribution
- zoner7
- · Replies 1 ·
How Do Two Balls Dropped from a Window Hit the Ground Simultaneously?
- mike_302
- · Replies 1 ·
Electric potential and capacitance (semicircle problem)
- jimen113
- · Replies 6 ·
Charge on spheres connected by wire
- Dopefish1337
- · Replies 1 ·
Speed of Impact of electrons in a television.
- Yavko2510
- · Replies 2 ·
Net electric field at center of square with four point charges
- Snowman2526
- · Replies 6 ·
How to Determine the Location of a Charge from Electric Field Measurements?
- Brit412
- · Replies 3 ·
Calculating Stopping Distance of a Cyclist
- a.mlw.walker
- · Replies 9 ·
Calculating voltage from multiple point charges
- Eric_meyers
- · Replies 1 ·
Finding the mass of a ball bearing using a balance and twelve cans
- rkimbel
- · Replies 3 ·
Calculate the Mass of a Ball Bearing (Millikan Experiment)
- rkimbel
- · Replies 1 ·
Help with work and kinetic energy problems
- LocknLoad
- · Replies 7 ·
How Far Does the Camera Fall Before the Skydiver Catches It?
- Vaz17
- · Replies 76 ·
Calculating Trajectory Motion of Ball Hit at 40.0m/s
- p47n15
- · Replies 3 ·
Physics3, question on intensity, power, wavelength
- Yroyathon
- · Replies 7 ·
Finding comet speed at different orbital distances
- jamagner
- · Replies 7 ·
Boulder being pulled up by a chain. Find max acceleration
- Wobble
- · Replies 3 ·
Physics3 question on light, radiation pressure
- Yroyathon
- · Replies 3 ·
Cannot find the formula for tension
- dhago07
- · Replies 2 ·
What Angle Should a Football Kicker Use for Maximum Hang Time on a 65 Yard Kick?
- twenty5
- · Replies 43 ·
What is the Tension in a String Holding a Ball in Motion?
- codz30
- · Replies 4 ·
Finding the angle where a box on an inclined ramp starts to slip
- rwcollings
- · Replies 8 ·
Electron in a parallel plate capacitor
- Expresso
- · Replies 4 ·
What Is the Coefficient of Rolling Friction for a Low-Pressure Bicycle Tire?
- toxsic
- · Replies 2 ·
Electric Potential: Calculating Midway Point
- synergix
- · Replies 2 ·
Magnetic Energy formulas, units, and examples
- Clarkie
- · Replies 1 ·
Does a circle of unit vectors have zero divergence?
- salman213
- · Replies 1 ·
How Do You Effectively Apply Free Body Diagrams in AP Physics Problems?
- DrDanger
- · Replies 1 ·
Absorbed photons, emmited photons
- stickplot
- · Replies 2 ·
Solving Two Problems: 500 kg Cart on a 9 m Loop-the-Loop
- jromega3
- · Replies 1 ·
Finding the electic field inside a sphere
- radenm
- · Replies 2 ·
Solving an Equation with Cosine
- salman213
- · Replies 5 ·
Rotational motion and conservation of energy problem
- haydn
- · Replies 3 ·