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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If you've already taken the AP Physics C Examination
- Gear300
- · Replies 1 ·
Minimum Force to Prevent Slipping Down Plane
- cryptoguy
- · Replies 4 ·
Coulomb's Law Question with Charges on x-axis
- Sabellic
- · Replies 2 ·
What is the torque on a crate being carried up stairs at an angle?
- Niles
- · Replies 15 ·
Calculating Average Acceleration and Force of Dragster and Driver
- rr92890
- · Replies 7 ·
Checking my capacitor solution
- i_island0
- · Replies 10 ·
Help with modeling problems from homework attachment
- magicuniverse
- · Replies 4 ·
Calculating the final velocity of a compressed-air launched projectile
- swbluto
- · Replies 4 ·
Can plastic allow me to see magnetic fields and where can I find it?
- KLE xy
- · Replies 3 ·
Finding projected force along line
- Saladsamurai
- · Replies 15 ·
What is the controversy- current and resistance
- i_island0
- · Replies 11 ·
Average acceleration of Suzie stopping with roller blades
- rr92890
- · Replies 5 ·
Distance To Center of Earthquake?
- mrlucky0
- · Replies 2 ·
What is the angle of projection?
- cryptoguy
- · Replies 4 ·
Where do the rotation coordinate transformation equations come from?
- raintrek
- · Replies 8 ·
Recoil velocity of canoe and person throwing a stone
- Jacque77
- · Replies 2 ·
Capacitor Charge Calculation: C1 and C2 in Series
- i_island0
- · Replies 3 ·
Falling body in a non-inertial reference frame
- karnten07
- · Replies 5 ·
Hooks and pulleys (torque and force)
- Niles
- · Replies 18 ·
Wavelength and velocity of waves between two nodes
- H^w
- · Replies 4 ·
Spring-coupled masses
- *best&sweetest*
- · Replies 4 ·
Coeffiecient of friction question
- paneity
- · Replies 1 ·
Understanding Atom Structure and Radiation for Physics Students
- DEWANA
- · Replies 7 ·
Bead on string in equilibrium with horizontal force
- CathyLou
- · Replies 5 ·
Calculate Red Light Wavelength in Liquid | Angle of Refraction
- rhxoehwhfh
- · Replies 4 ·
How Can You Solve Challenging Mechanics Problems?
- magicuniverse
- · Replies 11 ·
Pendulum Damping Force Calculation
- geordieman101
- · Replies 3 ·
Finding Angle of Refraction with Given Angles
- rhxoehwhfh
- · Replies 2 ·
Which Medium Has a Lower Index of Refraction: C or D?
- rhxoehwhfh
- · Replies 4 ·
Time for light to travel 54 cm through glycerine
- rhxoehwhfh
- · Replies 6 ·
Finding the period from Z(t)=5sin(2π/3·t)
- wowolala
- · Replies 2 ·
Equipartition theorem and chlorine
- PeterPoPS
- · Replies 1 ·
Deriving and Integrating Terminal Velocity Equation for Position
- Joza
- · Replies 1 ·
Projectile Motion With Drag [Aprox's are Welcome]
- Ikeness
- · Replies 2 ·
Parallel and series resistor networks with voltage and current
- jam7cacci
- · Replies 9 ·
Elastic Collision of a 90kg ball
- Lyphta
- · Replies 2 ·
How Does Sucking on a Straw Affect Pressure in a Child's Mouth?
- gills
- · Replies 1 ·
Can Photons and Electrons Cause Inelastic Collisions in Quantum Physics?
- tsochiu
- · Replies 11 ·
Calculating Angular Acceleration of a Washer's Tub
- smd1991
- · Replies 1 ·
Force exerted by rope at 48° dragging crate 25 m with 11400 J
- pebbles
- · Replies 1 ·
Calculating Work: 15.0N Object Moved 3.00m with a 60.0N Force
- blue__boy
- · Replies 2 ·
Charge from excess electrons and electron repulsion distance
- Jimmy215
- · Replies 1 ·
Finding flight time for a projectile launched at 62 degrees
- pebbles
- · Replies 2 ·
What is the Damping Coefficient in a Pendulum's Dampened Oscillation?
- GreenLantern674
- · Replies 1 ·
Why is the effective spring constant for springs in series the reciprocal of the sum?
- xxx7r1s7axxx
- · Replies 6 ·
Physical pendulum with movable mass on rod
- JolleJ
- · Replies 18 ·
What is the roller coaster's final speed at the bottom?
- irrrjntlp
- · Replies 2 ·
Find the Image of a Point Object at a Glass Sphere
- pardesi
- · Replies 4 ·
Fruit cell emf varying with temperature
- D_o_S
- · Replies 1 ·
Solved: Value of Infinity for Hydrogen Atom Wavelength
- alexlee33
- · Replies 4 ·
How Do You Calculate the Moment of Inertia for a Tennis Racket?
- metalInferno
- · Replies 7 ·
Why is friction in the same direction as applied force in rolling motion?
- metalInferno
- · Replies 5 ·
Gravitational potential energy of ball
- pebbles
- · Replies 25 ·
Solve Momentum Problem: Mass of Gas for Course Correction of 30 Degrees
- pebbles
- · Replies 5 ·
Meteors will strike earth at what speed?
- gills
- · Replies 2 ·
Electric Flux Calculation for Uniform Field in Closed Shoe Box - [SOLVED]
- Kajayacht
- · Replies 2 ·
Finding Basis of 5x5 Matrix: A - A^T
- ND3G
- · Replies 1 ·
Angular velocity - different ans by conserv E and momentum
- catkin
- · Replies 10 ·
Kinetic and poetenial energy of a roller coaster loop
- Cate
- · Replies 3 ·
Calculating Velocity of a Crate on an Incline Using Spring Constant and Mass
- KAT444
- · Replies 9 ·
Finding the acceleration of an object problem
- DJW
- · Replies 11 ·
How Does Friction Affect the Motion of Three Blocks?
- complexc25
- · Replies 3 ·
Two charges, find collision point
- DaNiEl!
- · Replies 4 ·
Find the Net Torque on Pulley with Masses M1 and M2
- Gravitino
- · Replies 8 ·
Finding the Image Distance for a Mirrored Sphere
- pardesi
- · Replies 3 ·
Sun's gravitational pull problem
- jperk980
- · Replies 1 ·
Calculating Power of Melting Ice with Thermoelectric Heater/Cooler
- lastoftheligh
- · Replies 9 ·
What is the Change in Velocity of a Model Airplane in a Circular Motion?
- aham925925
- · Replies 25 ·
Ball of putty hits rod (rotation)
- jonnyboy
- · Replies 3 ·
Why is gamma the same for both observers in the Lorentz transformation?
- Tedjn
- · Replies 7 ·
Understanding Spring Constant: 8.0kg Stone Compression
- JFlash
- · Replies 1 ·
Hydraulic lift: baby on piston raises car
- predentalgirl1
- · Replies 1 ·
Formula given acceleration and distance
- Pure_Anarchy
- · Replies 3 ·
How Do You Calculate Projectile Altitude on the Moon?
- MellowOne
- · Replies 12 ·
Finding Velocity for Work and Energy Problem
- petern
- · Replies 4 ·
Law of sine/cosines to find resultant force
- Saladsamurai
- · Replies 6 ·
How to Calculate Tension in a Hanging Sign Supported by Two Ropes
- physicsma1391
- · Replies 6 ·
Tension in a rope on frictionless pulley
- simon360
- · Replies 32 ·
Determine the radius of the electron's orbit.
- Frogger Man
- · Replies 13 ·
Can Water Be Sucked from a Vacuum?
- SciencePF
- · Replies 9 ·
How can I find the resultant force using only the law of cosines and sines?
- Saladsamurai
- · Replies 9 ·
Calculating Proton Speed in 0.1T Magnetic Field
- jbuck886
- · Replies 3 ·
Banked road need to find the angle
- LDRshipphysic
- · Replies 3 ·
Need help finishing Physics Problem, almost have answer.?
- Frogger Man
- · Replies 9 ·
Finding smaller sphere mass from gravitational force between two spheres
- Spongemonkies
- · Replies 4 ·
Work done by gravity, lawn mower power, and cart kinematics
- kingsrock783
- · Replies 1 ·
Destructive interference of different wave shapes and ambulance Doppler shift
- tornzaer
- · Replies 7 ·
What Is the Current Distribution in a Parallel Circuit with Three Loads?
- swathi
- · Replies 1 ·
Forces on a Box in a Moving Truck
- wyclefchick
- · Replies 3 ·
How can radiation be stopped by different materials?
- sciencefreak
- · Replies 3 ·
Understanding Undamped Oscillations
- jonnyboy
- · Replies 2 ·
Calculating Entropy Change of a Wire Conduction
- pizzafihop
- · Replies 3 ·
Work done by kinetic frictional force
- Jacque77
- · Replies 5 ·
Would doubling the mass make an object slide down a wall faster or slower?
- pyroknife
- · Replies 3 ·
Velocity and distance for body falling in 1/r² force field
- chem_master
- · Replies 25 ·
Angular momentum and oscillation of disk
- jonnyboy
- · Replies 1 ·
Derivation of Simple Harmonic Motion for a Spherical Bowl
- merryjman
- · Replies 2 ·
How far along a bridge can I walk before the cable breaks?
- Joza
- · Replies 6 ·
Calculating Charge on a Capacitor in an RC Circuit
- Ryo124
- · Replies 5 ·
At what time will the policeman catch up with the car?
- faunmia
- · Replies 3 ·