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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Relative velocity of a ball on a train
- MickeyBlue
- · Replies 2 ·
Maximum and minimum transverse speeds at an antinode
- Taniaz
- · Replies 6 ·
Understanding the Time & Speed Difference on Earth & Moon
- Vibhor
- · Replies 16 ·
Minimum distance between bomb and shell
- Akhilesh Prasad
- · Replies 5 ·
Density of star from hydrostatic equilibrium and pressure
- Dazed&Confused
- · Replies 9 ·
Skater's Force on Wall: Finding Average Force with Given Variables
- Erenjaeger
- · Replies 9 ·
Question about strength of magnetic field down coil (solenoid)
- RoboNerd
- · Replies 11 ·
Wheatstone bridge with capacitances
- Conductivity
- · Replies 8 ·
Finding amplitude and wave speed in a sinusoidal wave.
- Taniaz
- · Replies 4 ·
What Determines the Speed of Sound in an Organ Pipe?
- Taniaz
- · Replies 31 ·
Can Conservation of Energy Explain Pulley and Inclined Plane Mechanics?
- showzen
- · Replies 5 ·
Free Body Diagram and directions
- Bauxiet
- · Replies 4 ·
Frictionless problem including momentum
- Erenjaeger
- · Replies 5 ·
Thickness of components for equal strength
- Noel Clause
- · Replies 1 ·
Wave Equation for a Progressive Wave
- Taniaz
- · Replies 16 ·
Velocity of Comet at a given distance
- Hamish Taylor
- · Replies 2 ·
Volumentric or surface charge density
- Fernandopozasaura
- · Replies 8 ·
Ball Lightning: Uncovering the Mystery of N_7^{14}, H_1^1, & O_8^{16}
- Karol
- · Replies 21 ·
Velocity of a Helium-atom in a double slit experiment
- laguna
- · Replies 5 ·
Standing wave in a column of methane, find gamma of methane
- Taniaz
- · Replies 8 ·
Age of radioactive sample from sample
- Incand
- · Replies 6 ·
Calculating Net Torque for an Inclined Wheel: A Problem in Applied Physics
- Erenjaeger
- · Replies 4 ·
Two converging lens, find the final image....
- AdkinsJr
- · Replies 1 ·
How Do You Find the Total Energy in Simple Harmonic Motion?
- Erenjaeger
- · Replies 22 ·
How Do You Calculate Initial Velocity in a Vertical Ball Throw?
- Erenjaeger
- · Replies 6 ·
Electric Field and Potential Calculation for Square of Charges | Coulomb's Law
- Clara Chung
- · Replies 5 ·
Age difference problem due to space travel
- Erenjaeger
- · Replies 2 ·
Calculating moment of inertia and torsion constant
- Erenjaeger
- · Replies 4 ·
Piston Pressure and Unit Conversion
- Nim R
- · Replies 2 ·
How do different path differences affect interference in sound waves?
- Taniaz
- · Replies 7 ·
Calculating molar heat capacity from electron contribution
- kent davidge
- · Replies 1 ·
Acceleration and Tension in a Pulley System
- Mongster
- · Replies 9 ·
Power Resistor Immersed In Water
- elements
- · Replies 4 ·
Entropy Change in a Reversible Process multiple phase change
- elements
- · Replies 1 ·
Tension of rod connecting two cylinders
- zemaitistrys
- · Replies 32 ·
What is the Temperature of the Low Temperature Reservoir in a Carnot Engine?
- JoeSmith1013
- · Replies 5 ·
Angular velocity of an atom in a magnetic field
- Dazed&Confused
- · Replies 3 ·
Show Energy Equality of Simple Pendulum with Equipartition
- Glenda
- · Replies 1 ·
Mass spectrometer problem -- Need help
- Ryan Gibbons
- · Replies 3 ·
Statics: Statically Indeterminate Unstable Plane Truss
- Soumalya
- · Replies 4 ·
Estimating Atmospheric Params w/ Autocorrelation & Spectral Density Funcs.
- Firben
- · Replies 1 ·
Need help understanding Lenz's Law
- · Replies 3 ·
Power Dissipated By Resistor is LRC Circuit
- mj23
- · Replies 3 ·
Use of floor and ceiling functions in physics problems
- Agustin
- · Replies 16 ·
Rotational Motion of a pendulum
- xxphysics
- · Replies 6 ·
P wave and S wave Seismic velocity
- Caeser
- · Replies 2 ·
Two Rotating Disks Contacting Along Edge
- BrianK
- · Replies 2 ·
Solving Hydraulic & Pneumatic Problems in HNC Course
- braceman
- · Replies 1 ·
Find time at which position vector points towards origin
- Taniaz
- · Replies 34 ·
How Long Does It Take a Sled to Reach 24 m/s on an Incline?
- Nanu Nana
- · Replies 6 ·
Solve Kinematics Q13: Golf Ball Height & Distance
- John A
- · Replies 6 ·
Partial Derivatives and the Linear Wave Equation
- Taulant Sholla
- · Replies 4 ·
Vector Confusion In Applying Coulomb's Law
- PurelyPhysical
- · Replies 5 ·
What is the difference between first and second moments in mechanics?
- chetzread
- · Replies 12 ·
What Is the Angle of Reflection in a Plane Mirror?
- Coco Hwang
- · Replies 11 ·
Calculating Final Angular Speed of a Rotating Disk with a Horizontal Axis
- ooohffff
- · Replies 8 ·
Motion of 2 Wheels: Proving Constant Annular Area with Math
- Hamal_Arietis
- · Replies 18 ·
Efficiency of Ramp: Solving Box Push Up Problem
- Zack K
- · Replies 3 ·
Young's Modulus Formula / Steel Cable
- Miguel Velasquez
- · Replies 5 ·
What Is the Work Done on a Body Taken from Earth's Surface to Infinity?
- Taniaz
- · Replies 42 ·
Kepler's third law implies force proportional to mass
- Dazed&Confused
- · Replies 10 ·
Coefficients of kinetic and static friction in a pulley
- marsupial
- · Replies 28 ·
Finding the Electric Field of a Parallel Plate Capacitor
- arileah
- · Replies 3 ·
Maxwell's equation has well defined divergence?
- flux!
- · Replies 1 ·
Question regarding concentration units
- Lassy
- · Replies 7 ·
Finding the Electric Field at the Midpoint of two rings
- arileah
- · Replies 2 ·
Thermodynamics -- Relation between ##dT## and ##dV##
- Vibhor
- · Replies 14 ·
Angular Position, Speed, and Acceleration of a Swinging Door at t=0s and t=3.10s
- Erenjaeger
- · Replies 15 ·
Physics Lab -- Don't Understand Procedure....
- John A
- · Replies 7 ·
Calculating Time for Constant Acceleration: Motorcycle Velocity Change
- Erenjaeger
- · Replies 4 ·
Finding direction of force vector
- Erenjaeger
- · Replies 3 ·
Calculating time of object given its speed
- Erenjaeger
- · Replies 3 ·
How can Bernoulli's equation be applied in this problem?
- Vibhor
- · Replies 18 ·
Solenoid Diagram Homework: Right Hand Rule Explained
- Daniaal
- · Replies 14 ·
Collisions between 3 particles (perfectly elastic)
- Taniaz
- · Replies 15 ·
Angular velocity of circular orbit, small oscillations
- Dazed&Confused
- · Replies 12 ·
Calculating Electric Flux Through a Rectangle with Given Electric Field
- arileah
- · Replies 2 ·
Calculating Acceleration and Direction of Objects on a Ramp
- goonking
- · Replies 4 ·
Calculating Image Height of Flower in Convex Mirror | Homework Question
- Brittany King
- · Replies 3 ·
What is the Maximum Weight of Mass C on a Tipping Barrel?
- goonking
- · Replies 10 ·
How Do Forces Affect Particle Motion in Different Vertical Circle Scenarios?
- Taniaz
- · Replies 25 ·
New orbit of satellite deflected by Jupiter
- Dazed&Confused
- · Replies 2 ·
Dry vs. Humid Air: Refractive Index Differences
- Firben
- · Replies 2 ·
Deriving to find speed (angular motion)
- Erenjaeger
- · Replies 3 ·
Collision and time to stop a block
- Happiness
- · Replies 7 ·
Problem finding time, position, and velocity
- Snowhite525
- · Replies 3 ·
Solving for the Centre of Mass in an Astronaut Space Walk
- JenL
- · Replies 6 ·
What Are the Internal and External Forces Acting on a Steel Rod?
- chetzread
- · Replies 21 ·
What is the Coefficient of Restitution Between A and B?
- Hamal_Arietis
- · Replies 1 ·
Moment of uniformly distributed load
- chetzread
- · Replies 6 ·
Gravitational Formulas for Solving Energy-Based Questions
- Clara Chung
- · Replies 7 ·
Friction & movement in a system with body above moving body
- TheCapacitor
- · Replies 9 ·
Sound frequency from distance b/w first minimum and maximum
- kennyadams1317
- · Replies 1 ·
Verification of my solution to a problem of Magnetism
- Swapnil Das
- · Replies 2 ·
Instantaneous angular speed question
- Erenjaeger
- · Replies 1 ·
How do I Calculate GMm with Given a and T for Gravitation Problem?
- Clara Chung
- · Replies 6 ·
I would like to know what the dynamic force load is....
- omarmorocci
- · Replies 68 ·
Initial Velocity and Energy Conservation for Disk Collision
- xxphysics
- · Replies 1 ·
Gravitational field strength at a point
- Zack K
- · Replies 9 ·
How Do Entropy and Mass Relate in Black Hole Thermodynamics?
- MrPhysicsGuy
- · Replies 1 ·