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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Pressure difference between two bulbs measured by a mercury manometer
- Bane
- · Replies 1 ·
Why is the electric field zero inside a conducting shell?
- bigplanet401
- · Replies 1 ·
Why does relativistic velocity addition give 1c instead of 0.81c?
- Lynny
- · Replies 2 ·
Work and force: frictionless rollercoaster
- yvonne1313
- · Replies 4 ·
Calculating Doppler Shift for Radar Gun and Moving Ambulance
- mexqwerty
- · Replies 1 ·
Calculating Speed and Kinetic Energy in a Car Collision
- RachelT
- · Replies 8 ·
What Is the Speed of a Tennis Ball Dropped from 20m?
- RachelT
- · Replies 5 ·
Representation of the wave crests
- mexqwerty
- · Replies 1 ·
Calculate Factor of Safety for Steel Hanger w/ 550 MPa Strength
- walleye3
- · Replies 13 ·
Simple position-time function question
- tarkovsky
- · Replies 2 ·
Estimated terminal velocity significantly less than estimated impact velocity
- FEllen
- · Replies 6 ·
(x1, ct1) = (25m, 25m) - What do the 'm' represent? (SR)
- seasponges
- · Replies 4 ·
Parallel Circuit: Current with 4 vs 3 Resistors
- Durfys
- · Replies 3 ·
Time dilation and length contraction in a 0.80c spacecraft scenario
- Peter G.
- · Replies 12 ·
Discussion Questions in University physics by young
- madah12
- · Replies 7 ·
Angle of fuzzy dice when moving Just want to check
- coneheadceo
- · Replies 1 ·
How Does Torque Maintain Equilibrium in a Ladder Supported by Two People?
- jiayingsim123
- · Replies 1 ·
Car passing a 1km train at different speeds and directions
- monkfishkev
- · Replies 2 ·
I think I get it now. Thanks for your help. You're welcome, happy to help!
- monkfishkev
- · Replies 5 ·
Sketching charging and discharging of the capacitor
- shashaeee
- · Replies 3 ·
A Child's Circular Adventure: Calculating Distance and Displacement
- nerdygirl4
- · Replies 2 ·
Why can you use energy conservation for a dropped tennis ball?
- RachelT
- · Replies 3 ·
Kinematics truck moving at 30m/s suddenly notices a moose 70m
- monkfishkev
- · Replies 1 ·
Quasars as indicators of distance?
- DJ-Smiles
- · Replies 4 ·
How to get initial and final velocity? thanks
- jamesblim168
- · Replies 53 ·
Same idea, but different approach. Faraday's Law
- Dens
- · Replies 6 ·
Work done by external force in a gravitational field.
- moatasim23
- · Replies 3 ·
Is my answer correct for finding the change in entropy?
- aruwin
- · Replies 1 ·
De Broglie Wavelength Calculation for an Electron with KE= 8.5 eV
- starthorn
- · Replies 5 ·
Find the resistance between points A and B in a complex circuit
- 1/2"
- · Replies 7 ·
Finding the Average Acceleration
- savva
- · Replies 4 ·
Calculating velocity in regards to the mass and kinetic energy of an object
- v3ra
- · Replies 2 ·
Electrical force between two down quarks at 10^-15 m
- Danny523
- · Replies 6 ·
How to calculate displacement from density?
- volpe
- · Replies 4 ·
What is the voltage across the capacitor plates?
- shashaeee
- · Replies 7 ·
The observed frequency of a 1,200 Hz wave
- warfreak131
- · Replies 5 ·
What is the magnitude of the charge?
- shashaeee
- · Replies 1 ·
Verifying: Solving Quadratic Equations for Time
- savva
- · Replies 1 ·
Acceleration of blocks on a slope
- Northbysouth
- · Replies 5 ·
Inertia with the parallel axis theorem
- Northbysouth
- · Replies 1 ·
What is the acceleration due to gravity on planet x based on the range formula?
- Northbysouth
- · Replies 6 ·
Block moving up an incline with friction
- Northbysouth
- · Replies 4 ·
5-point star resultant force question
- jfletch
- · Replies 3 ·
Solved: Harmonic Motion - A, T, v=0, Acceleration, & Phase
- BlueRiboon
- · Replies 3 ·
Lorentz velocity transformation problem
- Aziza
- · Replies 1 ·
Pressure, temperature and entropy vs. volume graphs
- RJWills
- · Replies 5 ·
How Fast Can a Truck Turn Without Losing Its Cargo?
- lo31415926535
- · Replies 6 ·
Effect of moment of inertia on rolling distance
- Poligon
- · Replies 2 ·
DeBroglie wavelength in infinite potential well
- lowcard2
- · Replies 1 ·
Increased acceleration in a pully system
- coneheadceo
- · Replies 4 ·
Calculating Velocity and Acceleration for Variable Motion
- monkfishkev
- · Replies 6 ·
An electric potential is given in volts by
- zhillyz
- · Replies 5 ·
What is the current enclosed by a rectangular loop with given magnetic fields?
- zhillyz
- · Replies 6 ·
Calculating Velocity for Energy Conservation in Rotating System
- Tiba
- · Replies 2 ·
Finding the resultant force on the block
- ameliapond
- · Replies 4 ·
Ground state of Potassium and Hydrogen
- shyguy79
- · Replies 3 ·
Astrophysics Problem (gravitational lensing)
- roam
- · Replies 1 ·
Electric Motor Starting: Increase or Decrease Current?
- Jimmy25
- · Replies 5 ·
Strain and stress related to young modulus
- songoku
- · Replies 4 ·
Tension in cord at 30.0 degrees
- Kennedy111
- · Replies 2 ·
Finding magnitude of electric field at center of square
- s-f
- · Replies 4 ·
What is the Coefficient of Static Friction in This Physics Problem?
- HHenderson90
- · Replies 3 ·
Two blocks of mass connect to a pulley
- kitsunebell74
- · Replies 2 ·
Momentum of pendulum at its lowest point
- xpc123456789
- · Replies 1 ·
Solving 1D Motion Question with x>0, v<0, a>0
- mttal24
- · Replies 1 ·
Finding approx. minimum value for 'v'
- xiphoid
- · Replies 17 ·
Atomic Clock Time Dilation Experiment
- HarleyM
- · Replies 10 ·
Centroid of a TILTED Semi circle
- durty53
- · Replies 1 ·
Roller coaster friction calculations
- thestudent101
- · Replies 4 ·
Finding net force with forces in different directions
- ameliapond
- · Replies 3 ·
Acceleration on a Frictionless Wedge
- nobodyuknow
- · Replies 1 ·
What is the value of Ts in seconds?
- DLHill
- · Replies 5 ·
Finding momentum; I'm doing something wrong
- Apollinaria
- · Replies 7 ·
Electric Potential: Why Is It Equal in Both Spheres?
- Jalo
- · Replies 3 ·
Electrons - Relativistic velocity addition
- charmedbeauty
- · Replies 4 ·
How Fast Does a Ball Travel When Dropped from a Height?
- Physics-Pure
- · Replies 3 ·
General Physics- Frictional Forces on Objects
- Physics-Pure
- · Replies 15 ·
Kirchoff's circuits and the Electric Field
- Dens
- · Replies 2 ·
Efficiency of Low-Speed vs. High-Speed Chairlifts
- Kennedy111
- · Replies 2 ·
How Long Does It Take for a Capacitor to Charge to 80% of Its Maximum Voltage?
- Cetullah
- · Replies 8 ·
Parametric equations, find speed and direction
- Mushroom79
- · Replies 2 ·
Double Cart Inverted Pendulum Mechanics
- CandidClam
- · Replies 2 ·
Beryllium atom in a weak magnetic field
- fluidistic
- · Replies 1 ·
How much current does the motor draw to produce the required torque?
- xSnoopy
- · Replies 2 ·
Why does a chairlift need more energy to start than to keep running?
- Kennedy111
- · Replies 1 ·
Elastic Collision with a Spring Constant
- Drstevebrule
- · Replies 2 ·
Impulse-momentum theorem for rotating disk
- freshbox
- · Replies 28 ·
Calculate Force of Friction on Hockey Puck Slowing to 10m/s
- Kennedy111
- · Replies 2 ·
The Potential Difference between 2 points
- simion
- · Replies 3 ·
Eliminating h from a kinematic equation
- !!!
- · Replies 3 ·
Doppler Effect source/observer both moving
- smsport
- · Replies 6 ·
How Does Rain Affect a Train's Power Output?
- Tiba
- · Replies 11 ·
Electron in a box. Finding the length of the box. (infinite well)
- aaron-physics
- · Replies 1 ·
How did v come out of this derivative?
- Dens
- · Replies 4 ·
Employee A makes widgets twice as slowly as employee B
- aifan
- · Replies 9 ·
How Do Different Media Affect Pendulum Damping?
- Swetasuria
- · Replies 2 ·
Temperature (Thermal Expansion) problem
- bcd201115
- · Replies 7 ·
Calculating Energy Stored in a Capacitor?
- Dodgers31296
- · Replies 1 ·
Jetfighter Acceleration and Time
- Hurly
- · Replies 6 ·
What is the correct electric potential of a rod?
- Jalo
- · Replies 1 ·