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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Calculating Energy Absorption by an Eardrum Exposed to Sound Waves
- jmb07
- · Replies 4 ·
Magnitude of the force on this segment of wire ?
- mba444
- · Replies 1 ·
Finding lens power for near point 35 cm to see at 25 cm
- prat
- · Replies 2 ·
Magnetic force of a falling ball
- mba444
- · Replies 4 ·
Calculate the current in the coil
- mba444
- · Replies 15 ·
Conservation of energy of a spring problem
- Amar.alchemy
- · Replies 2 ·
Calculate height given KE and mass
- Sandman327
- · Replies 3 ·
Calculalting displacement, distance and acceleration
- doc.madani
- · Replies 2 ·
What is the relationship between gas composition and molecular distance?
- songoku
- · Replies 10 ·
Perfect Ball on Perfectly Frictionless Ramp - Does it Roll or Slide?
- PeterPumpkin
- · Replies 14 ·
When does kinetic energy equal potential energy in x=10sin(πt+π/3)?
- jrodss
- · Replies 4 ·
High altitude balloon gas expansion
- Gmanme
- · Replies 3 ·
Electric field above a uniformly charged dielectric disk
- coffeem
- · Replies 3 ·
Magnetic field magnitude for rectangular coil with torque
- mba444
- · Replies 2 ·
Why does a stream of water gradually narrow as it descends in height?
- RoyalCat
- · Replies 7 ·
Uniform circular motion - frequency vs. centripetal force.
- titaniumfever
- · Replies 3 ·
How Do You Calculate Cursor Velocity in Physics Problems?
- Apprentice123
- · Replies 14 ·
Calculating Deceleration and Force: Car and Trailer Braking Forces
- Apprentice123
- · Replies 2 ·
Magnetic force on wire in four-wire square configuration
- OsDaJu
- · Replies 4 ·
Astronaut's Kinetic Energy inside shuttle at liftoff
- ctamasi
- · Replies 3 ·
Calculating Car Acceleration on a 3% Slope at 88.5 km/h
- Apprentice123
- · Replies 8 ·
Determine the maximum theoretical speed expected for a car
- Apprentice123
- · Replies 10 ·
Ball thrown down vs up with same initial velocity
- bluejade
- · Replies 6 ·
Circular motion vector question
- sponsoredwalk
- · Replies 2 ·
Angular Momentum of a Ferris Wheel
- quantum13
- · Replies 3 ·
Potential difference between points a and b in resistor network with batteries
- mba444
- · Replies 3 ·
Average force opposing a proton
- Sandman327
- · Replies 4 ·
What Was the Initial Charge on Sphere A in the Conducting Spheres Problem?
- a85liz
- · Replies 1 ·
Calculating Force F Required for Frictionless Blocks to Remain at Rest
- annatar
- · Replies 1 ·
How Does the Biot-Savart Law Apply to a Square Loop in a Plane?
- sebb1e
- · Replies 4 ·
Magnetic Field Vector due to Infinitely long wire
- ed2288
- · Replies 6 ·
Why does Coulomb's law predict force at infinity?
- amanara
- · Replies 2 ·
Spring Harmonic Oscilation in Gravitational Field
- hi-bob
- · Replies 11 ·
Electric field finding third charge
- physics10189
- · Replies 4 ·
Circular Motion (twirling of a ball on a string)
- jva9
- · Replies 2 ·
Average acceleration of the ball
- knightassassin
- · Replies 7 ·
Can the angle of refraction be equal to the angle of incidence?
- bobaustin
- · Replies 2 ·
Definition of what 1 horsepower is
- Dave25
- · Replies 3 ·
Standards of Length, Mass, and Time
- knightassassin
- · Replies 5 ·
Calculate Average Acceleration for Kinematics Question
- AlbanyHS
- · Replies 2 ·
What is the unit of Magnetic charge?
- Ejaz Shah
- · Replies 2 ·
GRE-level conceptual questions
- ejs12006
- · Replies 3 ·
Three springs in series with weight between first and second spring
- fuzzyorama
- · Replies 9 ·
Why does resistance increase exponentially at high current on a V-I graph?
- ninjadrummer8
- · Replies 9 ·
How do you find the coefficient of kinetic friction?
- Dave25
- · Replies 3 ·
Determine the current at start-up and the battery discharged
- Apprentice123
- · Replies 2 ·
Calculating Charge, Current, and Energy in a Simple RC Circuit
- Apprentice123
- · Replies 11 ·
How Do You Calculate the Linear Speed of a Car Based on Tire Rotation?
- JaKaL
- · Replies 4 ·
Momentum and Kinetic Energy Equation for Elastic Collisions
- AussieBec
- · Replies 23 ·
What Equations Are Used in Hydraulic Braking Systems?
- AussieBec
- · Replies 1 ·
Calculating Desired Length for Capacitor with Specific Capacitance
- Apprentice123
- · Replies 17 ·
Electric Dipole: Calculate Electric Field at a Distance
- vipertongn
- · Replies 1 ·
Can Human Body's Capacitance Destroy Sensitive Electronic Equipment?
- Apprentice123
- · Replies 10 ·
Normal Force and Tension on suitcase strap
- purcell2
- · Replies 1 ·
Determining whiskey mass in barrel at Loch Ness using kinematics and buoyancy
- jmb07
- · Replies 1 ·
Where Do the Rocks Meet in a Kinematics Problem?
- mrlucky0
- · Replies 6 ·
Kinetic Friction Coefficient Problem
- iamtrojan3
- · Replies 2 ·
Finding car acceleration from a dangling tassel's angle
- purcell2
- · Replies 1 ·
Finding Irms for rectified half wave
- metasolid
- · Replies 4 ·
Finding Moment of Inertia of Infinitely Thin Hoop using a Double Integral
- opticaltempest
- · Replies 7 ·
Hooke's Law and suspended objects
- annatar
- · Replies 5 ·
Maximum range of projectiles from enemy ship over mountain
- blackboy
- · Replies 9 ·
Force Required To Prevent Breaking an Ankle
- MyNewPony
- · Replies 9 ·
Is a Sine Wave Always Transverse?
- iirwin
- · Replies 2 ·
Electrostatic force of attraction between two particles
- Midgela25
- · Replies 3 ·
How Would Changes in Coulomb's Law Affect Electrostatic Interactions?
- kyrax
- · Replies 2 ·
Simple Pendulums: Calculating Time to Attain Greatest Speed
- alyse!!
- · Replies 2 ·
Calculating Impulse Without Force or Time
- Skye425
- · Replies 2 ·
What Affects the RMS Speed Difference Between Helium Atoms and Molecules?
- barrylwires
- · Replies 1 ·
Magnetic force on a rigid semicircular wire
- Maxwellkid
- · Replies 26 ·
The ideal spring and simple harmonic motion
- abvebstr19@co
- · Replies 5 ·
Doppler Effect: Speed of Sound and Wind Question
- Perrin
- · Replies 4 ·
Musical Tube and String (Standing wave)
- turandorf
- · Replies 1 ·
Rotational accel to linear accel
- chloechloe
- · Replies 2 ·
Carnival ride problem (horizontal circular motion)
- xshadow93x
- · Replies 4 ·
Intensity and Power of isotropic sound
- turandorf
- · Replies 1 ·
Energy of translation and energy of rotation
- chloechloe
- · Replies 2 ·
Net force and maximum speed for sled sliding down 40m slope with friction
- Chris101
- · Replies 13 ·
Is magnetic induction at a point on a conductor zero or infinite?
- ananthu
- · Replies 8 ·
Energy transferred to eardrum from 110 dB sound source
- ryoon4690
- · Replies 1 ·
How do I solve a series wiring problem with two resistances and a 12-V battery?
- runfast220
- · Replies 9 ·
Simple Harmonic Motion and time calculation
- weskerq8
- · Replies 3 ·
Finding the third leg of a sailor's journey with vectors
- me!ü
- · Replies 4 ·
Having the hardest time with this class
- pokori
- · Replies 1 ·
What happens to angular velocity when there is no force of acceleration?
- chloechloe
- · Replies 1 ·
Finding fish weight using spring oscillation periods
- jmb07
- · Replies 2 ·
Find the resistance between the top and bottom faces of the cylinder
- mba444
- · Replies 11 ·
What Time Does the Wheel Come to a Stop?
- bluejade
- · Replies 2 ·
Is Kinetic Energy Derived from an Integral and Work Done?
- RoryP
- · Replies 3 ·
Does radiation pressure depend on the speed of the object?
- vertyu
- · Replies 1 ·
Question Newton's second Law: F= M * A
- Mark1991
- · Replies 1 ·
How Does a Painter Balance on a Board While Painting?
- turandorf
- · Replies 7 ·
Radiant Energy Absorbed by Person's Head with Hair
- grandprix
- · Replies 2 ·
How Many Lenses Generate a Real Image?
- Mark1991
- · Replies 8 ·
What Initial Speed Launches a Projectile to 270 km on the Moon?
- wadini
- · Replies 5 ·
Why Is Amplitude Maximal at w = 1/sqrt(LC)?
- dipset24
- · Replies 1 ·
How Does Friction Affect Motion on a Rotating Car Platform?
- Patta1667
- · Replies 1 ·
Finding resistance in a resistor?
- ninjadrummer8
- · Replies 1 ·
Force between two parallel electric dipoles with Coulomb's law
- kyrax
- · Replies 3 ·
Weight of barge on a bridge canal/acqueduct
- bigboss
- · Replies 17 ·