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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V-I Characteristics of Forward/Reverse Bias Diodes
- TyErd
- · Replies 5 ·
How Does Special Relativity Affect the Mass of Colliding Particles?
- coppersauce
- · Replies 1 ·
Maximize the magnetic field in a solenoid
- anonymousphys
- · Replies 1 ·
Rigid Body Motion: Sphere on Inclined Plane
- hellsnake
- · Replies 3 ·
How Do You Calculate Time-Dependent Current in an RL Circuit?
- semc
- · Replies 3 ·
Egg Launch and Recover-I need NASA level help
- clinresga
- · Replies 2 ·
What is the radius of a heliosynchronous orbit
- LadiiX
- · Replies 1 ·
Why does the man on a horse get thrown forward when the horse stops?
- nilic1
- · Replies 8 ·
Electric flux through cube with nonuniform electric field
- Brad155
- · Replies 1 ·
Satellite in 12-hour equatorial orbit: radius, speed, and passes
- LadiiX
- · Replies 1 ·
Finding acceleration using kinetic friction, final velocity, weight, and force
- wowdusk
- · Replies 1 ·
Need Answers for AP Physics B 2004 Exam To check work.
- Jishent
- · Replies 3 ·
Qn on Rotational Kinetic Energy
- lavieenrose
- · Replies 1 ·
What is the Angular Velocity of a Falling Physical Pendulum?
- HoloBarre
- · Replies 1 ·
What is the Average Friction Force Experienced by a Bullet Piercing a Sandbag?
- juggalomike
- · Replies 2 ·
Normal Modes and Frequencies of Coupled Oscillators?
- philnow
- · Replies 5 ·
How Much Work Does a Tow Truck Perform When Pulling a Car?
- magnifik
- · Replies 1 ·
Tension in Rope A vs. Rope B: Which is More?
- DU145
- · Replies 2 ·
What Determines the Outcome in These Momentum and Collision Scenarios?
- SoulInNeed
- · Replies 2 ·
Elastic collision of hockey puck
- mybrohshi5
- · Replies 1 ·
What Initial Current Flows When S is Closed in a P241B Coaxial Cable Circuit?
- mathman44
- · Replies 3 ·
Faraday's Law: Conducting rod moving across a magnetic field
- choco_moo
- · Replies 2 ·
Calculating Final Velocities in an Elastic Collision on an Air Track
- stevethepirat
- · Replies 5 ·
Calculating Expansion Cracks Width for Concrete Highway -30°C to +32°C
- Trizz
- · Replies 6 ·
Bullet-Block Collision Kinetics
- stevethepirat
- · Replies 2 ·
Alternating current LR current
- FARADAY JR
- · Replies 1 ·
Waves travelling through mediums, destructive interference.
- Ush
- · Replies 7 ·
Simple Harmonic Oscillation: Solving for Period, Frequency, Energy, and Velocity
- jmm21242
- · Replies 1 ·
Why is the current the same in resistors connected in series?
- Puchinita5
- · Replies 1 ·
Determining Steady-State Current and Voltages in Inductive-Resistive Circuit
- ghostbuster25
- · Replies 11 ·
Cannon fires 235 m in 47 s with unknown angle
- passmorea
- · Replies 3 ·
Calculate Initial Velocity of Object Thrown Vertically
- Brittykitty
- · Replies 8 ·
Maximum voltage across three 100Ω resistors with 25W power limit
- TyErd
- · Replies 2 ·
Centripetal force problem ( not enough givens?)
- saikisen
- · Replies 4 ·
Calculating Lens Power for New Eyeglasses
- matt72lsu
- · Replies 7 ·
2 swinging balls (pendulum) problem
- awiest82
- · Replies 9 ·
Real Object, Images formed by a single converging or diverging lens
- skibum143
- · Replies 5 ·
Working out distance for a package traveling space
- ghostbuster25
- · Replies 9 ·
Point charge above xy plane, find surface charge density
- satchmo05
- · Replies 5 ·
Light beam incident on glass: angle of incidence is twice the refraction angle
- skibum143
- · Replies 5 ·
Conservation of mechanical energy of pendulum
- mybrohshi5
- · Replies 4 ·
Centrifugal and circular motion
- clavin
- · Replies 3 ·
Waves question, finding new frequency,
- Ush
- · Replies 18 ·
Problem with power and potential energy
- costas
- · Replies 1 ·
Car with constant power up and down a symmetric hill
- theskyiscrape
- · Replies 5 ·
How Do You Calculate the Acceleration of a Board on Rolling Tubes?
- costas
- · Replies 1 ·
Age of the Universe: Solve for t_0
- NeedPhysHelp8
- · Replies 3 ·
What happens to Earth's charge when you remove a volume of soil?
- satchmo05
- · Replies 1 ·
Rotational Energy, finding speed of rotation. Simple Problem.
- Ebola_V1rus
- · Replies 2 ·
Tuning Forks and Frequency: Finding Length
- stevenbhester
- · Replies 4 ·
Electric Field strength of sphere
- james6008
- · Replies 1 ·
What causes a car to skid outwards on a circular turn?
- clavin
- · Replies 1 ·
Finding Electric Potential at P, Q and R in a Earthed Circuit
- thereddevils
- · Replies 6 ·
What is the tension in the cable?
- huybinhs
- · Replies 6 ·
Calculating Proton Displacement, Force & Current in a Magnetic Field
- thisisfreaky
- · Replies 1 ·
How to Calculate Capacitance for Two Slanted Conducting Plates?
- blackblanx
- · Replies 3 ·
What Is the Correct Resistance for Optimal LED Operation?
- TyErd
- · Replies 2 ·
Which Equation Determines the Time for the Leaning Tower of Pisa to Fall?
- roam
- · Replies 3 ·
Calculating height (projectile motion)
- roam
- · Replies 1 ·
Magnetostatics - force on wire
- victorlee2
- · Replies 1 ·
How Do You Calculate Ib, Ic, and Rb in a Transistor Amplifier Circuit?
- TyErd
- · Replies 14 ·
Time Dilation and Frame of Reference
- Kawakaze
- · Replies 11 ·
Tension in a pendulum (probably just me being stupid)
- downwithsocks
- · Replies 15 ·
How Do You Calculate the Density of Oil in a Multi-Tube Setup?
- okgo
- · Replies 1 ·
How Many Kilocalories are Produced When a Truck Decelerates?
- kee23
- · Replies 7 ·
Understanding Force and Friction: Solving a Connected Box Problem
- popo902
- · Replies 12 ·
Football kicked 52 yards horizontally to a goal 10 ft high
- cellfoneguy
- · Replies 1 ·
Calculating Distance for Plastic Leprechaun Launch
- gcarreau
- · Replies 3 ·
Force to hold nozzle with given flow rate and velocity
- kt102188
- · Replies 1 ·
Can a Skier Experience Weightlessness on a Parabolic Ski Slope?
- TyErd
- · Replies 15 ·
Determine the magnitude of the tension in the clotheline
- stateofdogma
- · Replies 3 ·
Finding EMF Required for a 22A, 5 Ohm Heater Coil
- kriegera
- · Replies 3 ·
Calculating Spring Constant from Conservation of Energy Equation
- Ajeezy
- · Replies 1 ·
Water Waves - Universal Wave Equation
- kylepetten
- · Replies 2 ·
Force applied on a falling mass
- Deadstar
- · Replies 3 ·
Charging Time for RC Circuit with Capacitor and Resistor
- RougeSun
- · Replies 9 ·
Coefficient of friction - bullet traveling through a block
- mybrohshi5
- · Replies 2 ·
Time interval between amplitude maxima in coupled oscillation
- philnow
- · Replies 8 ·
How to Calculate Time Required for 11 Light Years @ 0.9c
- doc.madani
- · Replies 6 ·
What is the resistance of a 20-mile aluminum wire transmission line?
- kriegera
- · Replies 5 ·
Find wavelength in double slit experiment
- k77i
- · Replies 8 ·
Moment of inertia of a cylinder with variable density
- yang09
- · Replies 11 ·
Friction Ramp Problem (I'm challenging a score received on a test)
- shankman
- · Replies 7 ·
Finding total resistance in parallel circuit
- kriegera
- · Replies 5 ·
Photon Starship, energy momentum
- George231086
- · Replies 1 ·
How Do You Convert GW/bcf to J/m^3 for Energy Storage?
- HelpMeh
- · Replies 1 ·
Calculating expended energy in a battery
- sdoyle1
- · Replies 2 ·
What happens when two charged spheres are brought into contact?
- Gyoza06
- · Replies 4 ·
Work on a proton/Electic Potential
- sdoyle1
- · Replies 1 ·
Electric Field of Non-Conducting Cylinder
- farhanafzal
- · Replies 1 ·
Solving the Problem: A 150g Ball Thrown Vertically
- theskyiscrape
- · Replies 2 ·
How Accurate Can an Atwood Machine Measure Gravity?
- Johnny0290
- · Replies 2 ·
Ballistic Cylinder: Angular Velocity After Bullet Impact
- lew44
- · Replies 1 ·
How Does Charge Distribution Affect Electric Field and Potential in a Sphere?
- stooge
- · Replies 1 ·
Mechanics with vectors question
- simpleas123
- · Replies 1 ·
Interpreting distance, velocity and acceleration graphs
- SoConfused__
- · Replies 2 ·
Bicycle Wheel Radius Calculation
- LTZach
- · Replies 1 ·
Why Does Calculating Bullet Transit Time Yield Different Results?
- ZzZerozZ
- · Replies 2 ·
Proving turns per length on a solenoid
- anonymousphys
- · Replies 1 ·
How Far Does the Earth Move When I Jump Off a Table?
- Paymemoney
- · Replies 6 ·