Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
How Does Adding Mass Affect the Angular Velocity of a Merry-Go-Round?
- melissa_y
- · Replies 2 ·
Where Can I Find a Free Font with the Electric Field Symbol for Word?
- El Hombre Invisible
- · Replies 19 ·
3 charges arranged in the form of an equilateral triangle
- mr_coffee
- · Replies 8 ·
Lightly Damped Harmonic Oscillator
- e(ho0n3
- · Replies 2 ·
How Does Mass Affect Angular Velocity in Rotational Systems?
- melissa_y
- · Replies 1 ·
Setting up a salt tank mixing problem with differential equations
- EvLer
- · Replies 9 ·
Solving Real Vector Space R>3 Bases Problems
- blanik
- · Replies 4 ·
Max Distance Mass M Can Be Placed Before Wire Breaks
- melissa_y
- · Replies 2 ·
Angular Velocity: Calculate New Speed After 4 People Step On
- melissa_y
- · Replies 2 ·
Angular Acceleration Problem/ Solid Cylinder
- melissa_y
- · Replies 2 ·
Angular Speed of Rolling Sphere: 32o Roof, L = 7.0 m, 12 kg, 13 cm
- melissa_y
- · Replies 2 ·
Max Charge Capacity on a Spherical Body: Calculating the Limit
- El Hombre Invisible
- · Replies 2 ·
Checking if a Java string is a valid binary number
- JasonJo
- · Replies 2 ·
How Many Unique Pizza Combinations Can You Order With Given Options?
- himurakenshin
- · Replies 8 ·
Will touching a 2 MV wire while standing on an insulator cause a shock?
- primarygun
- · Replies 4 ·
Varying the concentrations of half-cells
- ~angel~
- · Replies 2 ·
Plotting output response of system ot the input stimulus given
- Brian Moughtin
- · Replies 6 ·
Simplifying Square Root Equations
- frozen7
- · Replies 8 ·
Why is the distance always greater than or equal to the displacement?
- jacyh
- · Replies 6 ·
Calculating Angular Speed: 70 N-m Torque on a 160kg*m^2 Disk for 10s
- Gulheider
- · Replies 2 ·
Speed and its centripetal force of circling object
- bigman8424
- · Replies 2 ·
Airplane sound level with one jet engine shut down
- smith22
- · Replies 2 ·
Finding p so that A, B and C are collinear
- omicron
- · Replies 10 ·
How do I convert 500 km in 2 hr 15 min to speed in km/hr and m/s?
- nutsy76
- · Replies 2 ·
Two spaceships are orbiting a massive body
- CarlB
- · Replies 1 ·
Why Does Destructive Interference Occur at Different Frequencies?
- vroman
- · Replies 2 ·
If there is enough charge getting moved by a magnetic field
- michaelw
- · Replies 2 ·
One-Dimensional Kinematics problem
- tchronos
- · Replies 4 ·
Momentum head on collision problem
- recon
- · Replies 12 ·
What is the acceleration when the cord has been stretched?
- mahtab_lovelygirl
- · Replies 2 ·
At what angle does a skier lose contact with a frictionless snowball?
- Swatch
- · Replies 8 ·
Forced Vibration Questions: Solve Equations for Answers
- e(ho0n3
- · Replies 2 ·
Help with an identities theorem problem
- sitedesigner
- · Replies 14 ·
Why do nails have pointed ends and what stress types do they experience?
- ermines
- · Replies 2 ·
Tar sands excavator bucket position integral problem
- Mozart
- · Replies 16 ·
Identifying Coordination Compounds: [CU(CN)3]2- and [Ni(H2O)6]2+
- joejo
- · Replies 2 ·
How Does Gravity Affect the Acceleration Between Two People?
- bigman8424
- · Replies 2 ·
How to Calculate Volume Flow Rate Using a Venturi Meter
- sinedine
- · Replies 5 ·
Show that X = {x : 0 < x < p^m, x ≡ 1 (mod p)} forms a cyclic group
- AKG
- · Replies 12 ·
Cherenkov-effect + other EM relativity derivations: sources pls?
- Tsunami
- · Replies 2 ·
Angular frequency of oscillation
- jdstokes
- · Replies 4 ·
Van de Graaff generator energy question
- Aprilshowers
- · Replies 3 ·
System with complex eigenvalues and initial conditions
- VinnyCee
- · Replies 16 ·
Inhomogeneous linear system with matrix differential equation
- VinnyCee
- · Replies 4 ·
What Is the Internal Resistance of the Used Battery in This Circuit Problem?
- liajohnson
- · Replies 2 ·
Solving Infinite Series: a_n = \frac{2n}{3n+1}
- ziddy83
- · Replies 3 ·
Two wheels merging: angular velocity and kinetic energy change
- samemikejones
- · Replies 2 ·
Finding eigenvectors for 3×3 system of differential equations
- VinnyCee
- · Replies 4 ·
How Many Balloons Can .1m^3 He @ 150atm Blow Up?
- Erik Horwath
- · Replies 3 ·
Thermal Physics > Air and Internal Energy
- Ivegottheskill
- · Replies 3 ·
Does 1/√(n+1) count as a p-series with p = 1/2?
- Benny
- · Replies 4 ·
Electric Potential and Electric Field Strength
- ylem
- · Replies 7 ·
Solving tan^2 x + 6tanx - 7 Algebraically over 0 and 2π
- seiferseph
- · Replies 7 ·
Rigid Bodies and rotatational motion
- in10sivkid
- · Replies 4 ·
Understanding Initial Conditions for Solving Pendulum Motion
- EvLer
- · Replies 3 ·
Impulse from croquet mallete problem
- in10sivkid
- · Replies 5 ·
Circular motion of a tether ball
- in10sivkid
- · Replies 16 ·
What is the derivative for arctan(2/x)?
- EvLer
- · Replies 2 ·
Proving the matrix inverse formula with cofactors
- James Cutler
- · Replies 2 ·
Force between two electrons separated by distance r
- auee
- · Replies 2 ·
When is the force between two charged particles maximum?
- auee
- · Replies 2 ·
Find Constant Force F Vector Form: 34Nm Work Done A to B
- devious_
- · Replies 4 ·
Show acceleration makes 30° with radius vector in polar motion
- devious_
- · Replies 7 ·
Heat of combustion of methane using Hess's law
- joejo
- · Replies 24 ·
How Many Balloons Can a Helium Tank Fill?
- Erik Horwath
- · Replies 2 ·
Volume Question with cirular base and square top
- ktpr2
- · Replies 8 ·
Understanding Coulomb's Law: Calculating Force on a Line of Charges
- mr_coffee
- · Replies 3 ·
Finding limit of (x²+3x+2)/(2-|x|) as x approaches -2
- naicidrac
- · Replies 12 ·
Solving x^y = 9 and y^x = 8 simultaneously
- ssj5harsh
- · Replies 7 ·
Sin+cos solution undetermined coeff. de
- EvLer
- · Replies 2 ·
Wave equation properties and diffraction limit of the eye
- GingerFish
- · Replies 2 ·
Mechanical energy of a basketball
- texasgrl05
- · Replies 2 ·
What is the Ke value for the given reaction at 1800ºC?
- joejo
- · Replies 10 ·
Pie shaped loop of radius a carraying a current I
- aimee
- · Replies 2 ·
Why cathode ray velocity differs from textbook calculation
- Spastik_Relativity
- · Replies 5 ·
Weight of a person in a elevator going down
- stealthcataf
- · Replies 4 ·
What is the electric field between two charged particles?
- ajc9387
- · Replies 3 ·
Train acceleration and deceleration; pressure in a cylindrical tank
- jhaywood
- · Replies 7 ·
Question regarding Electrical conduction(Resistance)
- Sanosuke Sagara
- · Replies 4 ·
Resistance of wire wound into 200 coils on a cylinder
- Sanosuke Sagara
- · Replies 6 ·
Physics of Indiana Jones rope swing
- melissa_y
- · Replies 3 ·
Simple pendulum tension at different angles
- vroman
- · Replies 3 ·
Converging lens 15 cm focal length, object 53 cm away
- ajc9387
- · Replies 2 ·
How Do Laser Resonator Length and Deviations Affect He-Ne and VCSEL Lasers?
- Tsunami
- · Replies 2 ·
How Do You Apply Undetermined Coefficients to Solve Differential Equations?
- EvLer
- · Replies 4 ·
Can a Nontrivial Subspace Have the Same Dimension as Its Original Space?
- dan0
- · Replies 2 ·
The question is: Is the easier solution more accurate than the previous one?
- Craig113
- · Replies 7 ·
How Do You Calculate the Initial Velocity of a Bullet in a Momentum Problem?
- physics noob
- · Replies 3 ·
How can I improve my understanding of solving differential equations?
- Beez
- · Replies 5 ·
Finding the lowest point on a sphere-cone intersection using Lagrange multipliers
- Callisto
- · Replies 4 ·
Net force when pushing off a wall on a frictionless skateboard
- Banana15
- · Replies 4 ·
Change of variables in integrals
- Benny
- · Replies 6 ·
Calculating Angular Speed and Acceleration in Open-Reel Tape Decks
- texasgrl05
- · Replies 6 ·
Calculating Kinetic Friction of an 8kg Block
- Swatch
- · Replies 8 ·
Why Can't I Use V = Vo + at to Calculate Time for a Car Falling Off a Cliff?
- Struggling
- · Replies 2 ·
Calculating Speed on Earth's Equator and at Specific Latitude: A Physics Problem
- Nocturn888
- · Replies 2 ·
Why Is the Total Work Done by the Universe on You Zero?
- Link
- · Replies 2 ·
Integral of (2 − sin²x)(2 + sin²x)/cos²x
- Sabine
- · Replies 7 ·
What is the Limit of the Square Root Function Using L'Hopital's Rule?
- monet A
- · Replies 25 ·
Boyle's law and pressure problem
- zeithief
- · Replies 3 ·