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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Motion of an object dropped from a descending and ascending helicopter
- donking225
- · Replies 6 ·
Total thermal energy dissipated when capacitor discharges through resistor
- electrohau5
- · Replies 7 ·
Maximum working shear stress and working force?
- BlueCB
- · Replies 13 ·
Finding frequency, wavelength, speed from wave equations
- DavidCantwell
- · Replies 6 ·
Gallons of H20 needed to cool molten steel
- tconlon33
- · Replies 9 ·
How Do You Calculate the Power Supplied by Batteries A and B?
- electrohau5
- · Replies 7 ·
How Do You Calculate the Upward Force Needed to Keep a Board Level?
- gomathireddy
- · Replies 4 ·
Mousetrap Experimental Investigation
- DelToro
- · Replies 8 ·
Find acceleration given initial and final velocity, and displacement
- donking225
- · Replies 4 ·
What is the Tension in Steel Wires Supporting Aircraft Wing?
- BlueCB
- · Replies 13 ·
What is the Correct Final Temperature in an Ice-Water Heat Transfer Experiment?
- sunflowerzz
- · Replies 11 ·
Block pull, Problems with trig to isolate for theta.
- cambo86
- · Replies 2 ·
Shear and bending moment for beam with linearly varying distributed load
- yaro99
- · Replies 5 ·
Quadratic Air Drag and Bullet Motion: Solving for v^2 in Terms of x
- Outrageous
- · Replies 21 ·
Cycling on the Moon, no air resistance to cause terminal velocity.
- mrcotton
- · Replies 4 ·
Lennard-Jones potential equilibrium distance and dissociation work
- postfan
- · Replies 15 ·
Calculating Wind Speed for Suspended Cylinder
- Saitama
- · Replies 27 ·
Finding reaction forces at wheels with moment equilibrium
- BlueCB
- · Replies 17 ·
What Is the Final Velocity of the Black Ball After Collision?
- Dreaam
- · Replies 8 ·
How do I Find the Enclosed Charge of a Closed Surface?
- chipotleaway
- · Replies 1 ·
What Are the Answers to These Magnetism Questions?
- Sunturday
- · Replies 5 ·
How can an uncharged capacitor work as a short circuit?
- Instinctlol
- · Replies 10 ·
Finding valence electrons and bonding in ClO2+
- ikihi
- · Replies 1 ·
Under what conditions is a current generated w/ a magnet and solenoid?
- miaou5
- · Replies 6 ·
What Is Acceleration and How Does It Relate to Velocity and Time?
- oldspice1212
- · Replies 6 ·
Compton scattering with 90° photon and 21.4° electron
- Billy12
- · Replies 2 ·
How Do You Calculate the Average Kinetic Energy of Multiple Helium Atoms?
- Knightycloud
- · Replies 2 ·
How to Graph Potential Energy from Force Fx Along the x-axis?
- bestchemist
- · Replies 50 ·
Statics: Forces in a truss, method of joints
- yaro99
- · Replies 3 ·
Electric Field of a Polarized Sphere with Nonuniform Polarization
- Astrum
- · Replies 4 ·
How Can I Improve My Understanding of Mechanics in Physics?
- hbk69
- · Replies 17 ·
What is the Correct Value of Dx in Frame Analysis?
- yaro99
- · Replies 4 ·
Calculating Capacitance of a Parallel Plate Capacitor Using Integration
- sankalpmittal
- · Replies 8 ·
Reducing measurement errors in four experiments
- lauraanderson
- · Replies 1 ·
Principle of conservation of linear momentum equation
- SirPlus
- · Replies 3 ·
What is the final angular velocity when two rotating disks are pushed together?
- duplaimp
- · Replies 5 ·
15 kg block sliding down 35° incline with friction: find kinetic energy
- questtosuccess
- · Replies 10 ·
How does the moment of inertia scale?
- student34
- · Replies 2 ·
Can the fullness of a cylinder of water be determined by its frequency
- tsuwal
- · Replies 7 ·
Momentum of an object exploding into two separate objects
- bharat91
- · Replies 6 ·
Solve Rotational Problem 3: Max Angle for Rod+Clay
- Anthonyphy2013
- · Replies 2 ·
Elastic collision between two billiard balls
- phyme814
- · Replies 4 ·
Problem of Oscillation of mass attached to spring with external force
- Saurabh Sikchi
- · Replies 1 ·
Coefficient of drag of a ping pong ball
- Dayton
- · Replies 3 ·
Minimum distance around a track
- better361
- · Replies 1 ·
Problem on the magnetic force on a wire
- electrohau5
- · Replies 3 ·
Why does scaling down the universe make hand speed exceed light speed?
- patricktaylor
- · Replies 7 ·
Calculating total work using kinetic-work theorem
- tjw137
- · Replies 4 ·
Distance between zeroth and first order bright spots on a diffraction grating
- aChordate
- · Replies 10 ·
Torque on shaft of pulley question
- pjb73
- · Replies 11 ·
Battery and capacitor in series
- Qroid
- · Replies 9 ·
How many times must an 80 kg weight be lifted to burn off .5 kg of fat?
- ShizukaSm
- · Replies 4 ·
Why Does the IPhO 2012 Problem Assume ΔU=0 in a Collapsing Star Model?
- jaumzaum
- · Replies 19 ·
Coulombs force law in a three dimensional coordinate system problem
- SirPlus
- · Replies 8 ·
Accounting for Water Vapor Condensation in Charles' Law Experiment Measurements
- sunflowerzz
- · Replies 4 ·
Calculating Moment of Inertia for Square Particle System
- duplaimp
- · Replies 2 ·
Moment of inertia of a bar with two spheres
- duplaimp
- · Replies 6 ·
Jumping on a sliding board with no friction between surfaces.
- judas_priest
- · Replies 3 ·
What is the Centroid of a Wire and How to Calculate It Using Geometry?
- yaro99
- · Replies 5 ·
Calculating tsunami potential and kinetic energy from wave dimensions
- Dastan
- · Replies 2 ·
Ladder problem (statics) with 2 sources of friction
- natasha13100
- · Replies 2 ·
Scale reading for 50kg woman in accelerating elevator
- Anthonyphy2013
- · Replies 7 ·
How is the slope of the temperature graph determined?
- ShizukaSm
- · Replies 3 ·
Force on 500g Particle: Velocity at t = 2s
- bestchemist
- · Replies 4 ·
What is the Solution for IPhO 2013 Theoretical Problem 1?
- theultimate6
- · Replies 11 ·
Kinetic/Potential Energy Problem
- mathpat
- · Replies 11 ·
How Does Heron's Ancient Steam Engine Calculate Rotational Speed?
- Arcarius
- · Replies 2 ·
Torque / Pulley / Weight question
- pjb73
- · Replies 10 ·
Square loop, find the charge in the resistor
- thercias
- · Replies 7 ·
When will the induced current in the loop be maximal during acceleration?
- assaftolko
- · Replies 1 ·
Young’s double slit experiment
- aChordate
- · Replies 5 ·
How Does Slipping Affect the Acceleration of a Rolling Ball?
- CaptainP
- · Replies 1 ·
How Are Solutions -91.9 and 170 Derived Using the Quadratic Formula?
- Kimosabae
- · Replies 3 ·
Calculating Angular Displacement of CD with Radius 6.0 cm
- Anthonyphy2013
- · Replies 1 ·
Motion problem Final velocity of a dropped stone
- debjit625
- · Replies 4 ·
Total Magnification of Two Converging Lenses
- aChordate
- · Replies 9 ·
Index of refraction for antireflective coating on eyeglasses
- aChordate
- · Replies 7 ·
What Is the Particle's Speed When Its X Coordinate Reaches 15m?
- Anthonyphy2013
- · Replies 2 ·
Calculating Terminal Velocity for a Falling Object with Air Resistance
- Arcarius
- · Replies 4 ·
Two spheres travelling in opposite directions collide
- Woolyabyss
- · Replies 3 ·
Tension on a string and charge -
- thercias
- · Replies 4 ·
Calculating the Length of the Tortoise-Hare Race
- Anthonyphy2013
- · Replies 2 ·
Modified Twin Paradox in Special Relativity
- zytsang
- · Replies 6 ·
How Far Does the Block Travel Below Equilibrium After a Sharp Blow?
- RandomGuy1
- · Replies 3 ·
Calculate the velocity on which the pump will fill
- mzhades
- · Replies 1 ·
Balancing Forces on a Wooden Board: Determining the Point of Equilibrium
- SPiazzo
- · Replies 2 ·
Finding image distance when lens focal length changes from 11 cm to 32 cm
- aChordate
- · Replies 3 ·
Bullet fired vertically into 1 kg ballistic pendulum at 1000 m/s
- camel-man
- · Replies 1 ·
Conservation Laws and Symmetries Particle Physics
- highwayman1739
- · Replies 3 ·
When Should Driver B Start to Catch Driver A?
- duplaimp
- · Replies 9 ·
Resultant Force #2 - Calculating ##\vec{F}_R##
- STEMucator
- · Replies 2 ·
What Is the Correct Radial Acceleration for a Spinning Wheel?
- student34
- · Replies 2 ·
Resultant of two forces at 125° angle
- STEMucator
- · Replies 20 ·
What is the energy difference of a hydrogen atom in a magnetic field?
- knowLittle
- · Replies 18 ·
Heating pool with deuterium-tritium fusion: off by factor of 2
- weston.pace
- · Replies 4 ·
Airplane direction and wind direction
- JSan
- · Replies 2 ·
How Do You Calculate the Value of C1 in a Mixed Capacitor Circuit?
- mbaban
- · Replies 6 ·
Finding the Critical Angle for T.I.R.
- aChordate
- · Replies 1 ·
Why are C and E equipotential in this circuit?
- andyrk
- · Replies 7 ·
Magnetic force on a curved conductor
- carnot cycle
- · Replies 1 ·