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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What forces contribute to a runner's forward propulsion?
- DeNovo
- · Replies 19 ·
What Physics Topics Relate to Ski Lifts?
- Chairliftop
- · Replies 3 ·
Finding magnitude and angle of Fnet (Concept question)
- A-linav
- · Replies 1 ·
Deciding the direction of magnetic field of a solenoid
- Pushoam
- · Replies 1 ·
If a steel ball were to fall, how far away would it land
- Thara
- · Replies 12 ·
How can I represent these resistances on a diagram?
- GaussianSurface
- · Replies 21 ·
How Do You Solve These Basic A/L Physics Problems?
- Nufi
- · Replies 4 ·
A cube of side L=2 m is made of a cooper cable with 2mm^2
- GaussianSurface
- · Replies 2 ·
Rolling Cylinders across a grid of bars
- Carbon123
- · Replies 26 ·
Final speed of ball : collision with vertical plank at top
- Pushoam
- · Replies 4 ·
Electron deflection in perpendicular electric fields
- CARL0001
- · Replies 3 ·
Rotation w/constant angular acceleration
- Ignitia
- · Replies 2 ·
Upward Projectile Motion (Which equation do I use?)
- A-linav
- · Replies 2 ·
Magnetic Flux through conductor coil
- Luk
- · Replies 21 ·
Probability of the polymer chain
- Kelly Lin
- · Replies 25 ·
Electrostatics problem involving a Cone
- Tanya Sharma
- · Replies 10 ·
Finding resultant velocity of truck and wind vectors
- A-linav
- · Replies 3 ·
Calculate the RMS current of an ac circuit
- randomgamernerd
- · Replies 3 ·
Finding the speed of rolling ball
- Pushoam
- · Replies 5 ·
Acceleration of two drums connected by metal tape
- Pushoam
- · Replies 1 ·
Frequency of oscillation of a rod with two springs
- Pushoam
- · Replies 5 ·
Magneto-static force and Newton's 3rd Law
- Pushoam
- · Replies 11 ·
Angular Acceleration of a Rod in an Uneven String Setup
- Vibhor
- · Replies 12 ·
Final speed when the mass hits the post
- Pushoam
- · Replies 21 ·
Solving Heat Transfer Problem with Melting Ice Cube
- david98999
- · Replies 4 ·
Electric flux through a square surface parallel to y-z plane
- GaussianSurface
- · Replies 4 ·
Finding angular speed by conservation of angular momentum
- Alexander350
- · Replies 7 ·
Conservation of Momentum for Magnets
- Student149
- · Replies 17 ·
Special Relativistic Gravitational Force Law
- Vrbic
- · Replies 9 ·
Special relativity, gradient of velocity
- Vrbic
- · Replies 4 ·
Can an undamped harmonic oscillator have a steady-state solution?
- Richardbryant
- · Replies 7 ·
Finding charge on two suspended spheres using Coulomb's law
- Medeiros
- · Replies 3 ·
Is My Thought Process Correct for Interference Patterns?
- echoi11
- · Replies 28 ·
Uniform Circular Motion Inside a Sphere of Charge
- Medeiros
- · Replies 7 ·
Total Resistance of Parallel Circuit Calculation
- Vaish
- · Replies 3 ·
Choosing a zero for potential for 2 batteries in parallel with capacitors
- EddiePhys
- · Replies 5 ·
Deriving mean free path from nearest neighbor distance
- FallenLeibniz
- · Replies 2 ·
Standing waves on string with increasing tension
- echoi11
- · Replies 3 ·
Electromagnetism - Linear charge
- Jon Blind
- · Replies 3 ·
Very difficult mechanics problem with friction
- Bestfrog
- · Replies 8 ·
Electric Field Lines: Charge Movement and Conductor/Insulator Interactions
- KodN919
- · Replies 2 ·
Period of Oscillation of a Cylinder Attached to Two Springs
- OlicityFangirl
- · Replies 17 ·
What is the Effect of Isothermal Movement on Internal Energy of a Gas?
- L_landau
- · Replies 2 ·
Solving for Ski Jumper Takeoff Speed: Using Energy and Motion Equations
- Confusedbiomedeng
- · Replies 1 ·
Work problem involving a variable force
- Fredimension
- · Replies 4 ·
How Does Conservation of Angular Momentum Apply in a Torque-Free System?
- Pushoam
- · Replies 12 ·
Allowed and Forbidden Electron-Photon Reactions
- Vrbic
- · Replies 4 ·
Charge given externally to a capacitor
- EddiePhys
- · Replies 2 ·
Rotational velocity of the ring
- Pushoam
- · Replies 2 ·
Choosing Axis of Rotation in Cylinder Oscillation Problem
- BBA Biochemistry
- · Replies 1 ·
Induced current when magnet moves through coil
- A-linav
- · Replies 3 ·
How much water is converted to ice?
- L_landau
- · Replies 1 ·
Problem with units for conduction rate?
- L_landau
- · Replies 1 ·
Calculating the Density and Buoyant Force of a Pear in Water with Added Salt
- Kikien
- · Replies 4 ·
Why wouldn't activating the switch make a difference?
- EddiePhys
- · Replies 9 ·
When is acceleration positive or negative?
- XTian
- · Replies 3 ·
Draw field lines for both magnetic fields
- A-linav
- · Replies 1 ·
Dropping a Block on a Spring with Completely Inelastic Collision
- SeventeenForever
- · Replies 11 ·
Steel Vibration Synthesizer: Crafting Musical Shapes
- Mustafa Umut
- · Replies 1 ·
Additional Velocity Required for a Satellite Already in Orbit to Escape
- SeventeenForever
- · Replies 4 ·
Angular Acceleration of a Pulley with Mass
- OlicityFangirl
- · Replies 4 ·
Equivalent capacitance and Kirchoff's laws
- EddiePhys
- · Replies 3 ·
Sketching the electric field of a bar electret
- Pushoam
- · Replies 21 ·
Nonlinear Equations with Four Variables: Solving for All Solutions
- dirk_mec1
- · Replies 2 ·
Why Is There a Discrepancy in the Bead and Hoop Velocity Calculations?
- Kelly Lin
- · Replies 7 ·
Quantum Mechanics: Outside a (in)Finite Well
- WWCY
- · Replies 3 ·
Energy stored in an electrostatic system
- Pushoam
- · Replies 1 ·
What is the pressure at point B in a moving liquid with density ρ?
- Bestfrog
- · Replies 2 ·
Reading of a voltmeter and an ammeter
- Jahnavi
- · Replies 4 ·
Check my solution for tensions in a mass-weight system
- aatari
- · Replies 2 ·
Electric field due to a uniformly polarized cylinder
- Pushoam
- · Replies 7 ·
Compute the angle θ that will maximize the height of h of the impact point
- Alexanddros81
- · Replies 8 ·
Ar (Gas) goes into spinner (Adiabatic Decompression): Power?
- Const@ntine
- · Replies 4 ·
Friction -- Newton's laws of motion
- Vv anand
- · Replies 7 ·
Angular acceleration of a rod - 2
- Vibhor
- · Replies 4 ·
Determining Acceleration of Hinge in a Beam and Hinge Structure
- Carbon123
- · Replies 1 ·
How Does Angular Frequency Impact Wave Calculations in Electromagnetic Theory?
- RememberYourAngles
- · Replies 16 ·
Extension Projectile Motion and Circulation motion questions
- jstretto
- · Replies 1 ·
Inverse bulk modulus / compression or shear?
- quicksilver123
- · Replies 10 ·
Does the Radial Probability Function Indicate Angular Nodes?
- I love physics
- · Replies 1 ·
Is my Rolling Body Mechanics Solution Correct?
- Carbon123
- · Replies 3 ·
What was Martha’s displacement before turning around?
- Snipes
- · Replies 4 ·
How Do You Graph Kinetic Energy Against Time and Distance?
- james123
- · Replies 6 ·
Resistivity of a wire that is wound close on a cylinder
- curiosity colour
- · Replies 2 ·
Calculating Height h from a Projectile Launched at A
- Alexanddros81
- · Replies 4 ·
Location of object on axis of concave mirror?
- jlmccart03
- · Replies 4 ·
Projectile Problem - Bullet from Raised ground
- aatari
- · Replies 10 ·
Motion of an Object in a SemiCircle
- Student149
- · Replies 32 ·
Attractive force in an atom near a point charge q
- Pushoam
- · Replies 12 ·
Resonance frequency of open tube with side hole at 0.8 m
- physics123
- · Replies 7 ·
Electric field of an infinitely long charge carrying wire
- Rahulrj
- · Replies 21 ·
Charge, conductors, voltage and EPE questions?
- Medeiros
- · Replies 2 ·
Acceleration of a box across a rough horizontal plane
- Confusedbiomedeng
- · Replies 1 ·
Finding initial pressure for airgun to shoot lead ball at 120 m/s
- Const@ntine
- · Replies 19 ·
Magnetic Field of a Rectangular Loop at Point P
- says
- · Replies 17 ·
Minimum Mass required to lift up an object from a spring
- I love physics
- · Replies 20 ·
Finding tangential acceleration of a rotating disk
- AfronPie
- · Replies 4 ·
Relation between s=d/t and length contraction ?
- Frank_Mennella
- · Replies 1 ·
Forces of 3 charges in an equilateral triangle?
- Medeiros
- · Replies 1 ·
Deriving the potential energy of a dipole
- Pushoam
- · Replies 10 ·