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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Seesaw: simple statics problem?
- ninjagowoowoo
- · Replies 2 ·
Sink and Sources in Fluid Mechanics: Attraction, Repulsion, and Vortices
- Raparicio
- · Replies 2 ·
Unstable particle decay distance and muon energy at 15 degrees
- panthera
- · Replies 9 ·
Unleashing the Power of a Mousetrap Engine: max Velocity of 50g Car
- Craig113
- · Replies 2 ·
Separate Ag^+, Ca^2+, and Ni^2+ ions from a solution
- howie222
- · Replies 7 ·
How to Find the Sum of Arctan Series?
- Yegor
- · Replies 24 ·
How to integrate int (x^2 + 4)^(-1/2) dx Is it a substitution?
- gordda
- · Replies 2 ·
Is v²=2ax dimensionally consistent?
- tony873004
- · Replies 2 ·
Fluid Mechanics - Torque at hinge of closed vessel
- Aerospace
- · Replies 3 ·
Percent Uncertainty in Volume of Spherical Beach Ball
- Struggling
- · Replies 4 ·
Angular Acceleration of Solid Cylinder: Mass, Force, Time
- melissa_y
- · Replies 2 ·
What system does this lagrangian represent?
- Jamoo
- · Replies 6 ·
How do Pauli Matrices form an Orthonormal Basis for 2x2 Complex Matrices?
- blanik
- · Replies 7 ·
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 ·