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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I dont get how ice skaters angular momentum is conserved when arms are drawn in?
- calculus_jy
- · Replies 8 ·
Find separation between these two particles - kinematics
- a150daysflood
- · Replies 14 ·
Square Coil, Round Hole and mutual inductance
- KidA
- · Replies 2 ·
An incline plane, friction, and a pulley.
- Idioticsmartie
- · Replies 18 ·
Questions about magnetism and its uses in devices
- grade11
- · Replies 2 ·
How to Calculate Time and Height in a Skateboarding Jump
- Iniuria12
- · Replies 10 ·
How Does Magnetism Influence the Functionality of Telephones?
- grade11
- · Replies 1 ·
How Does Dimensional Analysis Prove mH Equals Force in Magnetism?
- bhaskarb
- · Replies 2 ·
Maximum pressure in a three-process thermodynamic cycle with isothermal compression
- cochrad
- · Replies 3 ·
Will the block move with a parallel force?
- ron_jay
- · Replies 6 ·
Intro to moving charges in a particle
- grade11
- · Replies 6 ·
Electric Flux and Charges on the Surface of a Sphere
- lugita15
- · Replies 2 ·
Differences between delta W or dW
- dx+dy
- · Replies 2 ·
How to calculate effective resistance?
- ritwik06
- · Replies 4 ·
Calculating Mass of Cylinder in Rotational Dynamics Problem
- Kyleman
- · Replies 2 ·
Formulas for torque and velocity in simple algebra
- misty
- · Replies 3 ·
How Is the Equation a Dot Product in Momentum Problems?
- mohdhm
- · Replies 7 ·
Vector Potential: Proving Partial Derivative of A = E
- captain
- · Replies 1 ·
Unable to visualize the concept of Torque.
- RipClaw
- · Replies 4 ·
Block, spring, and mass problem
- kiwikahuna
- · Replies 2 ·
Sinusoidal current i = 10sin(942.5t): find frequency, period, and time to 8A
- salvatorecaine
- · Replies 3 ·
Stationary point charge in increasing magnetic field
- jimmyjets
- · Replies 1 ·
What is the magnitude of the impulse from the spike?
- andrewn
- · Replies 2 ·
Electric Potential: Explaining Differences
- MIA6
- · Replies 21 ·
Rate Of Turn and Turn Radius of an aircraft
- Newton1Law
- · Replies 2 ·
Lorentz Contraction in Supersonic Jets
- Benzoate
- · Replies 5 ·
Correcting for room temperature and atmospheric pressure
- iyun
- · Replies 8 ·
Exploring the Law of Conservation of Momentum in a Fall and Impact Scenario
- Googi_b
- · Replies 3 ·
Relavistic velocity lorentz transformation problem.
- Benzoate
- · Replies 3 ·
Orbitals around the nucleus problem
- ksssudhanva
- · Replies 5 ·
How do you calculate weight distribution on a table's four legs?
- rdx
- · Replies 29 ·
How Does Time Dilation Affect Supersonic Jet Pilots?
- Benzoate
- · Replies 1 ·
Equivalent Force Calculation for Fixed Quadrant Block with Sliding Rope Tensions
- kingsgambit
- · Replies 3 ·
What is the Input Impedance of a Circuit at Low and High Frequencies?
- ineedmunchies
- · Replies 2 ·
What does potential energy mean and how does spring constant work?
- MIA6
- · Replies 23 ·
Finding the momentum of the each balls
- Niles
- · Replies 7 ·
Understanding Centripetal Force: Solving for Tension
- i.mehrzad
- · Replies 1 ·
Speed of information(2) - simple example with a mass hanging in a cable
- louk
- · Replies 4 ·
Friction on an Inclined Plane: Kinetic or Static?
- stakar11
- · Replies 2 ·
How is Thermal Energy Converted in a Ballistic Pendulum?
- grade11
- · Replies 18 ·
Integrating with volume element (d^3)x
- captain
- · Replies 1 ·
Free body diagram of a person sitting on a wheeled chair
- Simfish
- · Replies 3 ·
What RPM Must a Shaft Reach for Arms to Extend Perpendicular?
- treborly45
- · Replies 17 ·
How Do Newton's Laws Apply to a Tug-of-War on Ice?
- Alyce777
- · Replies 3 ·
How are the known dimensions of spacetime proven?
- GammaBurst
- · Replies 1 ·
Why do cars of different masses roll down a slide at different speeds?
- cremedelacreme
- · Replies 2 ·
What does it mean to be 'quantized'?
- MIA6
- · Replies 5 ·
Finding Glide Angle of Cessna-182 Plane at 136 km/h
- yoinka
- · Replies 2 ·
How Does Binding Energy Affect Nuclear Fission Reactions?
- BMWPower06
- · Replies 4 ·
Why Does Coulomb's Unit Measurement Include Seconds?
- ehrenfest
- · Replies 4 ·
Electric Field outside a cylinder
- t_n_p
- · Replies 50 ·
What is the electric potential energy of a hydrogen atom in a circular orbit?
- t_n_p
- · Replies 27 ·
What is the optimal angle for a banked curve on a roller coaster?
- Amy54
- · Replies 1 ·
What is a wavefront? sine or cosine graph?
- MIA6
- · Replies 10 ·
Gravitational potential energy - problem
- zinc79
- · Replies 6 ·
Calculating Acceleration of a Cylinder on an Incline
- muppet
- · Replies 2 ·
A simple differential equation question.
- MathematicalPhysicist
- · Replies 1 ·
Galilean transformation problem
- Benzoate
- · Replies 12 ·
What does the variable k represent in E=(p²/2m)-(ke²/r)?
- patapat
- · Replies 3 ·
Calculating Tank Velocity and Stopping Time Due to Rain Drops
- MathematicalPhysicist
- · Replies 6 ·
Calculating Final Velocity of an Object with Power Input
- HalfThere
- · Replies 9 ·
Riding With a Particle: Measuring Its Lifetime
- cshelbythec
- · Replies 2 ·
Conservation of energy of falling chimney
- James01
- · Replies 3 ·
Velocity selector: when can net force equal zero in perpendicular E and B fields?
- jesuslovesu
- · Replies 3 ·
Why do different coordinate systems give different equations for pulley tension?
- frostchaos123
- · Replies 6 ·
What is the half life of the isotope?
- mike2007
- · Replies 7 ·
Solving a Physics Problem Involving Two Blocks Connected by a Cord
- Edwardo_Elric
- · Replies 1 ·
Nuclear reaction or chemical reaction
- mike2007
- · Replies 3 ·
Do Nuclear Reactions Create New Elements?
- mike2007
- · Replies 1 ·
Chemical element and chemical property
- mike2007
- · Replies 1 ·
Meter internal resistance conversion and supply line losses
- CL39
- · Replies 2 ·
How Do You Analyze the Electric Field Created by Two Charges?
- t_n_p
- · Replies 17 ·
How Does Friction Affect the Stability of a Block on an Accelerating Wedge?
- asdifnlg
- · Replies 9 ·
Why Isn't Kinetic Energy Always Conserved with Momentum?
- Oerg
- · Replies 11 ·
Why wavelength matters in diffraction
- MIA6
- · Replies 3 ·
What Is the Effect of Inserting a Dielectric Slab into a Charged Capacitor?
- mXCSNT
- · Replies 5 ·
Does Gas Density Influence Expansion When Heated?
- s.p.q.r
- · Replies 2 ·
Producing X-Rays from a Television Picture Tube
- mike2007
- · Replies 2 ·
Amusement Park ride - maximum period of rotation
- avsj
- · Replies 2 ·
How Does Angular Velocity Change as a Particle Slides Down a Sphere?
- James01
- · Replies 1 ·
Some vectors and buried treasure.
- niyati
- · Replies 3 ·
Gravitational Force(Why the negative sign?)
- Gunman
- · Replies 5 ·
Calculating Velocity and Momentum in Inelastic Collisions
- mwahx3
- · Replies 3 ·
SAT Question concerning Newton's Third Law
- yellowenigma
- · Replies 2 ·
Force and work for suspended bag, ramp, and action-reaction pairs
- Niles
- · Replies 7 ·
Finding Initial Velocity in 2D Kinematics Problems
- fredrancour
- · Replies 2 ·
Why Does Special Relativity Create Discrepancies Between Time Frames?
- Oerg
- · Replies 9 ·
Circular Motion: Acceleration Direction
- mwahx3
- · Replies 1 ·
Heat turn iron to gold if heated?
- mike2007
- · Replies 2 ·
How fast does light travel in 1 ft?
- dan001
- · Replies 14 ·
Pendulum swing -basic trig problems
- mujadeo
- · Replies 12 ·
Find unit vector and cross product
- Edwardo_Elric
- · Replies 4 ·
Projectiles, Momentum, and work
- blader324
- · Replies 15 ·
Stretched spring -find coeff of friction
- mujadeo
- · Replies 13 ·
Expert golfer's single displacement on the green
- niyati
- · Replies 1 ·
Solve Spring Compression Homework Problem
- andrewn
- · Replies 2 ·
Dropping coal on a platfrom (energy cons)
- mujadeo
- · Replies 2 ·
Challenging projectile question
- holden__lover
- · Replies 1 ·
Finding pressure and displacement amplitude from decibel level
- heartofaragorn
- · Replies 4 ·
Calculating Apparent Depth: Air vs Water
- Alyce777
- · Replies 1 ·