Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Plane waves, phase difference question
- goldilocks
- · Replies 1 ·
Ge-Si alloy composition and phosphorus doping in silicon
- fredrick08
- · Replies 4 ·
Finding Linear Acceleration of a Yo-Yo
- kudoushinichi88
- · Replies 4 ·
What is the Maximum Velocity of Two Blocks on a Spring?
- Cade
- · Replies 4 ·
Momentum and velocity at certain distance?
- MechaMZ
- · Replies 5 ·
How do you find the initial speed?
- Hannah :)
- · Replies 5 ·
Solving Friction Problem: Acceleration of Lower Block
- crazy_nuttie
- · Replies 5 ·
What Is the Extra Force on Each Train Due to Coal Transfer?
- UFeng
- · Replies 7 ·
Projectile Motion without Initial velocity
- Disoo
- · Replies 1 ·
What is the Acceleration of an Elevator with Friction?
- Oblivion77
- · Replies 4 ·
Hydrogen -Energy State Transitions
- Berdi
- · Replies 2 ·
Classical electron radius from rest mass energy
- tnutty
- · Replies 5 ·
Gravitational Potential Energy of a rocket fired straight up
- genPhysics
- · Replies 1 ·
Work Problem: Climbing 3000m Mountain with 50kg Woman
- genPhysics
- · Replies 1 ·
Change in internal energy in air
- S1CkFiSh
- · Replies 2 ·
Billiard ball bouncing off cushion at different angles
- CaptFormal
- · Replies 3 ·
How to Calculate Gravitational Potential Energy for a Swinging Toy?
- stanton
- · Replies 1 ·
Find the electrical field of a Spherical Shell
- RedPhoenix
- · Replies 3 ·
Biot Savart, Electrons, and Cirucular Currents
- cwatki14
- · Replies 3 ·
Finding net force on a race car and catching baseball
- dagitt
- · Replies 1 ·
Solving Cable Tension and Moment Magnitude Problem
- sapphire4770
- · Replies 3 ·
Total kinetic energy of two protons
- Zvaigzdute
- · Replies 2 ·
Acceleration of Forces at Angles
- kcrox
- · Replies 1 ·
How Does a Dual Ring Charge Configuration Affect Electric Potential?
- tag16
- · Replies 1 ·
Two blocks, pulley, 10 kg mass on 30° incline with friction
- katzmeow9
- · Replies 4 ·
What is the ranking of particle speeds in a constant magnetic field?
- Suy
- · Replies 6 ·
Gravitational and elastic energy
- pdrjuarez
- · Replies 1 ·
Free body diagram Incline Problem
- imdapolak
- · Replies 1 ·
How Fast Was the Bullet Before Hitting the Block?
- CaptFormal
- · Replies 1 ·
Increase in entropy for 2.1×10⁷ kg ice avalanche descending 0.55 km
- S1CkFiSh
- · Replies 2 ·
Magnitude of the maximum torque on a current loop.
- shaizen
- · Replies 2 ·
How Do You Calculate the Combined Momentum of Two Joggers?
- CaptFormal
- · Replies 1 ·
How Do You Calculate Work Required to Move a Charge Near a Charged Ring?
- BustedBreaks
- · Replies 4 ·
Finding magnitude and direction of A+B where A = -4i - j and B = 8i - 2j
- Loppyfoot
- · Replies 4 ·
Moment of inertia and torque for a grinding wheel
- tjohn101
- · Replies 7 ·
Coils of wire with current in a magnetic field
- Oijl
- · Replies 3 ·
Calculating Magnetic Force on a Wire in a Uniform Magnetic Field
- Suy
- · Replies 2 ·
Fraction Simplification of Impedances and Resistances
- Jordash
- · Replies 2 ·
Emission Spectra: which electrons?
- Elly
- · Replies 4 ·
Calculating Total Electric Charge in a 50kg Sample of Water
- dtrain121
- · Replies 2 ·
How Far Should a Pilot Release a Bomb to Hit a Target?
- MorganJ
- · Replies 3 ·
Physics Problem: Tension Calculation for Two Bodies on a Frictionless Surface
- Fanekaz
- · Replies 2 ·
How Do You Find the Initial Speed of a Baseball in Projectile Motion?
- Dirac1239
- · Replies 8 ·
Mag and Direction of 3d Vectors
- Loppyfoot
- · Replies 2 ·
How Do You Calculate Charge in a Polarized Molecule?
- asc6429
- · Replies 5 ·
How to Calculate the Ball's Trajectory to Land in the Can?
- 2011vlu
- · Replies 1 ·
Circular Motion and Radius of Curvature
- ThatMathGuy
- · Replies 1 ·
Calculate the gravitational potential energy of the child-Earth system
- Chuck 86
- · Replies 1 ·
Tough Energy problem Law of conservation of energy
- Senjai
- · Replies 1 ·
Equilibrium applications of Newton's law of motion II
- pookisantoki
- · Replies 5 ·
Changing radius and centripetal force
- caljuice
- · Replies 2 ·
Find the spring constant and speed?
- sonutulsiani
- · Replies 22 ·
Nonequilibrium applications of Newton's laws of motion
- pookisantoki
- · Replies 4 ·
Calculate Flux in a closed Triangle
- RedPhoenix
- · Replies 1 ·
Two Spheres connected by a wire.
- BustedBreaks
- · Replies 1 ·
How Do You Calculate the Average Error in Measurements?
- lauralovesyou
- · Replies 1 ·
Equilibrium applications of Newton's laws of motion III
- pookisantoki
- · Replies 1 ·
Calculating Taylor Series for $\frac{1}{|R-r|}$ with R>>r
- industrygiant
- · Replies 1 ·
Newton's second law and direction of force
- neutron star
- · Replies 3 ·
Blender blades angular acceleration calculation
- tjohn101
- · Replies 7 ·
Equilibrium applications of Newton's law of motion
- pookisantoki
- · Replies 3 ·
Finding Acceleration in Circular Kinematics without Degrees or Radians
- rottweiler
- · Replies 4 ·
Statuc and kinetic frictional forces
- pookisantoki
- · Replies 4 ·
Calculate the Force between Charges
- wizard.ubit
- · Replies 1 ·
Why Can't Ohm's Law Be Applied Here?
- songoku
- · Replies 2 ·
What Happens When a Bug Collides with a Big Rig Windshield?
- alexc1ut
- · Replies 1 ·
What Force is Needed for 1.5 m/s² Acceleration in the +y Direction?
- DaOneEnOnly
- · Replies 1 ·
Quick thing How did they get this?
- neutron star
- · Replies 1 ·
Electric forces, net force = zero
- johnnyies
- · Replies 2 ·
Crossing a River: Find Speed Needed to Swim from A to B
- hover
- · Replies 2 ·
Electromagnetism, find magnitude and direction of the resulting force on wire.
- RaDitZ
- · Replies 1 ·
Projectile Motion: Firing to Reach Target at Diff. Height
- Bob123456
- · Replies 1 ·
How to derive the ficticious force due to a moving frame of reference?
- semc
- · Replies 1 ·
Two blocks held against each other
- kishley
- · Replies 2 ·
Water jet from fire hose reaching window 20 m high and 60 m away
- Dmmd
- · Replies 8 ·
Block held in equilibrium on incline by Force F, Find magnitidue of Force F?
- miamirulz29
- · Replies 17 ·
Work-Energy Theorem: Effect of increasing speed vs stopping distance.
- Senjai
- · Replies 2 ·
How Do You Calculate the Coefficient of Friction on a Sloped Surface?
- PhysicsIsRuff
- · Replies 6 ·
Finding intial velocity given vertical and horizontal displacement
- bigdaddydark7
- · Replies 2 ·
Elliptical Orbits velocity and distance
- garva
- · Replies 1 ·
Two blocks on 30° incline with different friction coefficients
- seraphimhouse
- · Replies 4 ·
Finding distance using vector components
- LadyTwi
- · Replies 6 ·
Conservation of momentum problem and kinematics ?
- mychellbella
- · Replies 1 ·
Banked curve min/max velocities
- ndoc
- · Replies 1 ·
What is the Centripetal Acceleration of a Disc After Spinning Up?
- dsimpson
- · Replies 1 ·
Thermal Expansion of two Metals
- xavior6
- · Replies 1 ·
Calculating Tension in a Frictionless Slope Problem
- juliadufosse
- · Replies 3 ·
Basic Acceleration and Distance Problem
- balllla
- · Replies 11 ·
How is dθ/dt related to v/r in circular motion?
- emyt
- · Replies 4 ·
How to Determine Vector C Using Vectors A and B?
- warfreak131
- · Replies 1 ·
What Are the Solar Panel Requirements for Meeting the US' Electrical Needs?
- sonutulsiani
- · Replies 7 ·
How does acceleration change if mass increases by a factor of 7?
- jeffc93
- · Replies 2 ·
Horizontal spring problem with friction?
- peachy112girl
- · Replies 2 ·
What is the Y-Component of a Baseball's Acceleration at Half Its Terminal Speed?
- pedro_infante
- · Replies 1 ·
Calc Tension of 2 Angles: 590-N Ball Suspended from Cords
- neutron star
- · Replies 5 ·
Find the acceleration at 4000rpm
- thedarkone80
- · Replies 3 ·
Solving for Height of Falling Flowerpot
- mmoadi
- · Replies 1 ·
Kinetics question in 2 dimensions
- carolyn89012
- · Replies 13 ·
Introductory Vector Equation Illustrated by a Moving River - Picture Included
- to819
- · Replies 3 ·
A hydrogen atom in uniform electric field
- brasilr9
- · Replies 17 ·