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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Block held at rest against a vertical wall by a horizontal force
- Magagagag
- · Replies 6 ·
Electric Flux Through a 1x1x1 cm Box
- absolutezer0es
- · Replies 7 ·
Simple special relativity problem
- jethomas3182
- · Replies 5 ·
Loop-the-loop with potentional and kinetic energy
- Yae Miteo
- · Replies 8 ·
Why is Arc Length Calculated as r*theta in Circular Motion?
- Redfire66
- · Replies 3 ·
Ways to solve mesh system equations
- homo-sapiens
- · Replies 1 ·
What does torque with respect to the y-axis mean?
- davidbenari
- · Replies 7 ·
Angular Magnification for a Microscope
- Temp0
- · Replies 1 ·
What is the tension in a horizontal rope on an inclined plane with friction?
- ohphysics
- · Replies 22 ·
Finding speed of sound from Doppler shift with moving car
- calculator20
- · Replies 14 ·
Calculating Tension and Friction in Newton's Second Law Problems
- TheRedDevil18
- · Replies 1 ·
Rocket thrust and acceleration at liftoff
- Abid Rizvi
- · Replies 2 ·
Calculating Velocity and Distance for Ascending Double Cone on Rails
- franceboy
- · Replies 52 ·
Quantum physics- kinetic energy of electron after collision
- desmond iking
- · Replies 9 ·
How Does Compton Scattering Affect Photon Wavelength in the Sun?
- oldspice1212
- · Replies 1 ·
Photoelectric exp - calculate intensity of incident light
- desmond iking
- · Replies 3 ·
Relationship between λ and max kinetic energy
- desmond iking
- · Replies 1 ·
Planet x orbiting the the earths orbital 180 degrees off phase
- ponces
- · Replies 5 ·
Measuring Torque of a Stepper Motor Using a Suspended Weight Method
- roam
- · Replies 6 ·
Period of a Proton's Orbit arount magnetic field
- Chase11
- · Replies 11 ·
What is the acceleration of a car with a hanging mass at an angle of 23 degrees?
- GovernorBob
- · Replies 1 ·
Solving a 10kg Sled Friction Problem on Ice
- gabemarkus
- · Replies 10 ·
How Many Degrees of Freedom Are in These Systems?
- sudipmaity
- · Replies 5 ·
Is Magnetic Susceptibility Always Accurately Represented in Textbooks?
- fayled
- · Replies 7 ·
Finding tensions in three tethers at 30° and 60° angles
- petormojer
- · Replies 11 ·
Professor added a twist to the conservation of energy problem.
- Randall
- · Replies 3 ·
Potential difference to acquire momentum
- desmond iking
- · Replies 4 ·
Flux integral and Gauss's theorem
- adgar
- · Replies 8 ·
What are the equations for interference patterns?
- Arun Raja
- · Replies 1 ·
Diverging and Converging Lenses
- slaw155
- · Replies 1 ·
Line of action for which the resultant force of the wrench passes
- imd
- · Replies 3 ·
Will water flow from a bucket with a hole in free fall?
- Rakshit Joshi
- · Replies 6 ·
Potential difference between conducting shell and insulating cylinder
- Richard Ros
- · Replies 2 ·
Carnot cycle problem - Is it thermodynamically possible to do 500J of work?
- cmkc109
- · Replies 2 ·
Tension Force Parallel to the Ground (Perpendicular to Gravity)
- Redfire66
- · Replies 1 ·
Find force and coefficient of friction between 2 stacked blocks in motion
- gabemarkus
- · Replies 2 ·
Applying conservation of energy to a chain sliding off a platform
- yugeci
- · Replies 12 ·
Hair in between two glass plates. Decreasing the distance between the maxima
- Hereformore
- · Replies 1 ·
Time for temperature of water to raise
- EnergyKitty
- · Replies 11 ·
Calculate Car Mass: 19,454 N Force at 201 mph Speed
- math989
- · Replies 5 ·
Wedge pushed horizontally up an inclined plane
- Seung Lee
- · Replies 3 ·
Circuit resistance equivalence
- homo-sapiens
- · Replies 1 ·
Determining point where net electric field is zero
- Fresh Coffee
- · Replies 7 ·
At what altitude should lunar lander's 30,000 N rocket fire to land safely at 1 m/s?
- That_EDGEy_KiD
- · Replies 8 ·
Integrating ma+kx=0 to get x(t)
- teme92
- · Replies 7 ·
3D Cartestian Coordinate Vector Problem
- FaraDazed
- · Replies 4 ·
Force and acceleration in a vibrating wire
- Karol
- · Replies 7 ·
Projectile motion: mortar fired at balloon 3m high
- navm1
- · Replies 10 ·
What Are the Microstates for N=3, E=0, n=1 and n=3 in an Isolated Atomic System?
- teme92
- · Replies 12 ·
Bungee jump cord length using Hooke's law and energy conservation
- Abid Rizvi
- · Replies 9 ·
Intro physics question involving magnitudes and vectors
- Kevin Bertham
- · Replies 3 ·
Finding the Electric Field as a Result of Two Point Charges
- Jefferson
- · Replies 1 ·
Quantum Mechanics Question - Photon-Proton Collision
- AKG
- · Replies 1 ·
Particle trapped in an infinite well (1d) - find probability
- Brianrofl
- · Replies 3 ·
Uniform Circular Motion: Why is the velocity changing?
- physicsbaig
- · Replies 3 ·
Did my teacher make a mistake? (Kirchoff's Rules)
- carpelumen
- · Replies 3 ·
Block pulled up rough incline: work and kinetic energy
- oligosaccharide
- · Replies 3 ·
Centripetal acceleration of fairgrounds ride
- plowboy15
- · Replies 5 ·
Calculating Oscillation Frequency and Max Acceleration of a String
- Tangeton
- · Replies 1 ·
Simple Harmonic Motion Guitar String Question
- Apothem
- · Replies 4 ·
A kinematics problem in which direction of velocity keeps changing.
- Satvik Pandey
- · Replies 12 ·
Moment of inertia ice skater problem
- jasonmoon
- · Replies 20 ·
Projectile Motion Neglecting air resistance
- JenniferT
- · Replies 3 ·
Magnitude of a ball's Acceleration
- PhysicsHelp152
- · Replies 4 ·
Relaxed spring between two carts
- um20018
- · Replies 5 ·
Net heat flux from seawater cooling from 20°C to 3°C
- geojon
- · Replies 15 ·
Simple Pendulum: The gradient of the graph of T^2 against length
- Tangeton
- · Replies 4 ·
Determine the Magnitude of the instantaneous Velocity
- Chris Carney
- · Replies 5 ·
Two stacked boxes and a pulley with a weight attached
- donveppy
- · Replies 1 ·
How Do You Calculate Cannonball Trajectory from a Cliff?
- Timmy96
- · Replies 3 ·
Solve Side Flash Problem: Current Through Person is 5000A
- Crush1986
- · Replies 4 ·
Why do you slide forward when a bus brakes if no force acts on you?
- logan3
- · Replies 9 ·
Finding the Effective resistance of a tree of resistors
- Ajonsight
- · Replies 14 ·
Falling from hot air balloon at 167 meters
- kevinxt
- · Replies 6 ·
How to Find Velocity-Time Graph from Position-Time Graph?
- teetar
- · Replies 1 ·
Bouncing Ball Dissipative Interaction
- B3NR4Y
- · Replies 3 ·
Calculating Time for Car B to Overtake Car A
- APett
- · Replies 1 ·
Calculating the Period of a Simple Pendulum
- Tangeton
- · Replies 6 ·
Three Reference Frame Relativity Problem - Velocity Addition or Proper Lengths
- mailman123
- · Replies 2 ·
Helicopter acceleration problem
- Turntbull
- · Replies 2 ·
Pendulum Velocity Homework: Find Mass's Speed at Bottom of Path
- Yae Miteo
- · Replies 5 ·
Pressing a Block against a Wall
- PokemonMaster
- · Replies 12 ·
Work done by a battery to move charge
- alanf
- · Replies 2 ·
Waves and optics pertaining to sinusoidal waves
- jweie29nh
- · Replies 13 ·
Find the magnitude of charge stored in the entire network
- rstein66
- · Replies 3 ·
Two particle system involving conservation laws
- ghostfolk
- · Replies 13 ·
What is the Best Expression for the Acceleration of a Moving Particle?
- dk_ch
- · Replies 9 ·
Calculating Flux Density and Induced Voltage in a Linear Induction Flashlight
- radaballer
- · Replies 5 ·
A Triangle of Equal Gravitational Forces?
- dhphysics
- · Replies 2 ·
Finding acceleration with circular motion
- David Mordigal
- · Replies 3 ·
Finding the focal length of a negative lens without another lens.
- kPepis
- · Replies 1 ·
Relativistic Conservation of Momentum Confusion
- Pezz
- · Replies 2 ·
Why is centripetal force different at top and bottom of a loop de loop?
- Jimmy87
- · Replies 10 ·
Maximum height at which a siphon can drain an open water tower
- Hereformore
- · Replies 6 ·
Error in gravitational acceleration due to uncertainty in r
- cam borrett
- · Replies 1 ·
A dropped stone falls past a window, determine it's initial height
- chickenonrice
- · Replies 3 ·
Acceleration, velocity and speed questions with worked solutions
- kirsten_2009
- · Replies 8 ·
Hydraulics and pressure problem
- justduy
- · Replies 4 ·
Potential difference between two spherical conductors
- alanf
- · Replies 3 ·
Finding Velocity from Position: How to Use Limits
- Chris Carney
- · Replies 2 ·