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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Electric field of a charged cube
- Moara
- · Replies 17 ·
Banked circular road: conditions for equal normal forces
- Master1022
- · Replies 15 ·
Brayton cycle specific work calculation with temperature formula
- Master1022
- · Replies 8 ·
Find the Driving frequency and phase angle for this R-C phasor problem
- MedEx
- · Replies 5 ·
High school Physics - Simple Harmonic Motion
- bigbosswilly
- · Replies 6 ·
The Mystery of the "Man on a Boat" Problem with Easy Tips
- fartguy46
- · Replies 21 ·
Moment of Inertia of this combined system?
- jaewonjung
- · Replies 3 ·
Finding the change in velocity through a potential difference
- Patches1532
- · Replies 6 ·
Asymmetrical Static Equilibrium
- Mike94
- · Replies 11 ·
Find Tension Force for Cord Holding Gate
- solarcat
- · Replies 11 ·
Acceleration needed to keep an object from sliding down a windshield
- pochemuchka
- · Replies 15 ·
How to compare two measurements with uncertainties in terms of sigma?
- CCofADoa
- · Replies 2 ·
How Does Net Torque Affect Pulley Acceleration in an Atwood Machine?
- solarcat
- · Replies 3 ·
Find the tensions of two strings in mechanical equilibrium
- Davidllerenav
- · Replies 15 ·
How Is Internal Energy Calculated for an Ideal Gas Using Temperature Change?
- tuki
- · Replies 1 ·
Torque and Forces in Spool Movement: Solving for Net Torque and Static Friction
- jaewonjung
- · Replies 4 ·
Find the initial velocity of the second stone
- Josh chips
- · Replies 10 ·
Relative Velocity of Swimmer: How to Calculate Total Time for Different Paths?
- Taylor_1989
- · Replies 1 ·
Interpretation of distance mentioned as degrees
- JC2000
- · Replies 3 ·
Efficiency of a steam power plant
- TheBigDig
- · Replies 6 ·
How can I calculate the magnetic field using electromagnetic induction?
- themountain
- · Replies 1 ·
Velocity of a charged particle
- Kosta1234
- · Replies 11 ·
Relative velocity between a Bus and a Car
- buckybarnes
- · Replies 10 ·
Did You Calculate the Speed of Sound Correctly?
- Creed
- · Replies 5 ·
Find the incorrect relation from the figure
- Dhaneshragu
- · Replies 2 ·
Can you explain Automobile Kinematics?
- Dhenusha
- · Replies 1 ·
Using wave equation to find frequency from wavelength
- greent
- · Replies 8 ·
How Do Restitution Coefficients Affect Billiard Ball Trajectories?
- aturcotte16
- · Replies 17 ·
Rectangular loop falling through magnetic field boundary
- Jenny Physics
- · Replies 1 ·
Why does work depend on volume change for solids and liquids?
- Sarah0001
- · Replies 3 ·
Electron Speed in Conducting Shells
- branshims
- · Replies 7 ·
Dynamics of a string coupled pendulum
- physics_cosmos
- · Replies 6 ·
Understanding Force and Momentum in Angular Elastic Collisions
- PhysicS FAN
- · Replies 5 ·
Tension Force Problem: Solving for T1 with x and y components using trigonometry
- Susie
- · Replies 3 ·
How does trigonometry help determine the gravity component on an inclined plane?
- jaewonjung
- · Replies 6 ·
What is the maximum distance of projectile?
- melel
- · Replies 3 ·
How to Calculate Impulse in a Momentum Problem?
- Ariano AnnaG
- · Replies 6 ·
How can I solve for the sines and cosines in a harmonic oscillation problem?
- PhysicS FAN
- · Replies 6 ·
How to calculate what a voltmeter measures with multiple resistors?
- Rasias
- · Replies 4 ·
Finding the speed of the cylinder's point of mass
- Alif Yasa
- · Replies 1 ·
Intuition behind centre of mass equation for a rigid body
- Pochen Liu
- · Replies 1 ·
Find the equilibrium angle of this unusual driven pendulum geometry
- Alif Yasa
- · Replies 10 ·
Chain problem - velocity as the chain becomes completely vertical
- hi im nimdA
- · Replies 2 ·
Acceleration of an electron due to Magnetic and Electric fields
- Amadeo
- · Replies 1 ·
Calculations for a ball tossed vertically upward
- jaewonjung
- · Replies 2 ·
How Does Doubling the Temperature Affect the Mean Free Path in a Gas?
- Sarah0001
- · Replies 1 ·
Shear and moment diagrams for a beam with distributed load
- jd747
- · Replies 1 ·
Forces acting on a coil due to a varying magnetic field
- Zack K
- · Replies 12 ·
Rectilinear motion, not uniform accleration
- Terrycho
- · Replies 6 ·
Relative velocity between lift and screw
- robax25
- · Replies 17 ·
Induced charge on capacitor connected to coil in decreasing magnetic field
- John123
- · Replies 4 ·
Magnetic field of vector potential
- TheBigDig
- · Replies 3 ·
Why do electric field lines leave positive charges and enter negative ones?
- Guillem_dlc
- · Replies 12 ·
Finding Broglie wavelength after acceleration
- Physicsq
- · Replies 3 ·
Calculate the impact force when falling from a height
- Emilyyyyyyyyy
- · Replies 8 ·
What is the near-point of the eye-plus-spectacle?
- gungo
- · Replies 3 ·
Force and power applied to create a traveling wave
- Miles123K
- · Replies 12 ·
2 objects connected by a spring - Minimum Force required to move the objects
- EEristavi
- · Replies 4 ·
How can the time dilation equation explain faster moving clocks running slower?
- nopenopedynope
- · Replies 6 ·
Efficiency of the Rankine Cycle
- TheBigDig
- · Replies 4 ·
How to Interpret Missing Energy Levels in Atomic Spectra?
- Clara Chung
- · Replies 6 ·
Relation between Potential Field, Force, Kinetic Energy and Abs.Energy
- EEristavi
- · Replies 2 ·
Angle of depression with a 5 degree slope
- bnd_20191
- · Replies 5 ·
Stress and Strain to cause these deformations
- nerdeagle24
- · Replies 1 ·
Why don't incident and reflected waves cancel each other out?
- jeehoo
- · Replies 1 ·
Finding stress and elongation in piston
- nerdeagle24
- · Replies 4 ·
Impact of several variables on resulting projectile motion trajectory
- Badgun
- · Replies 3 ·
Relationship between k and E when deriving the density of states
- TIF141
- · Replies 1 ·
Slab on two supports: finding max weight before tipping
- tjosan
- · Replies 5 ·
Maximum Capillary Rise: Dynamic Treatment of Liquid in Motion?
- Rituraj131
- · Replies 3 ·
Graphing Kinetic Energy of a Toy Car Released from a Compressed Spring
- sp3sp2sp
- · Replies 13 ·
What is the angular acceleration of this cylindrical system?
- Np14
- · Replies 11 ·
Two particles approaching head-on with relative speed 0.890c
- rugerts
- · Replies 6 ·
Coulomb's Law: The distance between two charged spheres
- Valenciamar
- · Replies 1 ·
How can I derive the relativistic de Broglie equation?
- Boltzman Oscillation
- · Replies 23 ·
Work Problem -- Wood Block Sliding into a Spring
- Che8833
- · Replies 7 ·
Solving for acceleration of two blocks with two pulleys
- Che8833
- · Replies 1 ·
How do I find the radius of curvature?
- Hawking Jr
- · Replies 7 ·
Find the position of a proton in an E and B field
- zehkari
- · Replies 7 ·
What Is the Correct Current Equation to Induce Given Flux in a Circuit?
- Sarah0001
- · Replies 2 ·
Why does current decrease in a rotating wheel in a magnetic field?
- bdvjofrni
- · Replies 1 ·
Black Body radiation and Planck's radiation distribution
- Cocoleia
- · Replies 10 ·
How Do Mass and Windings Affect Disc Rotation Dynamics?
- oshin
- · Replies 1 ·
Find an expression for the power developed at the given rotation rate
- hi im nimdA
- · Replies 1 ·
Can the Maximum Efficiency of a Thermal Cycle Be 2/5?
- Clara Chung
- · Replies 5 ·
Trouble Understanding How to Apply Kirchhoff's Laws
- gibberingmouther
- · Replies 5 ·
Kirchoff's Voltage Law transposing problem
- JKhim
- · Replies 7 ·
Finding the ODE that describes this circuit + find its transfer function
- rugerts
- · Replies 6 ·
Finding the unitary matrix for a beam splitter
- phb1762
- · Replies 7 ·
Potential Energy and Equilibrium Position for a Circular Trajectory
- Lone Wolf
- · Replies 2 ·
Cannon shoots a bullet. What if it's not fixed to the platform?
- Ariano AnnaG
- · Replies 3 ·
Torque on circular current loop
- skyesthelimit
- · Replies 5 ·
Is the Energy Stored in a Capacitor Really QV Instead of QV/2?
- Clara Chung
- · Replies 5 ·
How do we calculate the temperature of a laser-heated substance?
- Pericle
- · Replies 4 ·
What is the tension force for this system in rotational equilibrium?
- Np14
- · Replies 3 ·
Resolving forces perpendicular to acceleration
- trew
- · Replies 10 ·
Is Ball Bouncing on a Surface a Simple Harmonic Motion?
- PhysicStud01
- · Replies 11 ·
Finding pressure and velocity in a 15mm central heating pipe with Bernoulli's equation
- ShaunG123
- · Replies 6 ·
Calculating the frequency of an electron orbiting in a magnetic field
- John Ker
- · Replies 3 ·
Problem about identical particles
- Lebnm
- · Replies 5 ·