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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Tension HW: Change in Coupling Bars A, B, C with 39 kg Removed
- TikiPost10
- · Replies 2 ·
Solving Potential Diff. on Capacitors Series Connection w/300V
- Hyperreality
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Distance, acceleration, and time
- HopeDagger
- · Replies 3 ·
Function composition and polynomial operations with fractions
- ability
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Can you help me solve this system of DEs with a tricky auxiliary equation?
- EvLer
- · Replies 5 ·
Balancing Chemical Reactions: 0.6 O2, 0.8 CO, 0.5 CO2
- Chocolaty
- · Replies 3 ·
Are Atoms Real or Just a Myth?
- ShadowChaotic
- · Replies 5 ·
Why is a Cyclist Not Transforming Chemical Energy into Kinetic Energy?
- DeathKnight
- · Replies 2 ·
How can I solve logarithms with multiple solutions in the complex plane?
- andyman20
- · Replies 19 ·
Calculating torque for a small horizontal strip
- Swatch
- · Replies 5 ·
Why do electrons not fall into the nucleus of an atom?
- TheSpeed=DUCK!
- · Replies 28 ·
Solving inequalities, need some confirmation
- ability
- · Replies 2 ·
Work done on box from gravitational force
- frozen7
- · Replies 2 ·
Modular arithmetic + some other stuff on numbers
- Benny
- · Replies 3 ·
Popeye throwing himself thru the air
- cronodragon
- · Replies 3 ·
How Is the Average Acceleration Calculated for a Bouncing Ball?
- courtrigrad
- · Replies 2 ·
Why Is My Line Integral Calculation Incorrect?
- asdf1
- · Replies 4 ·
Proof of |g> = A|f> implies <g| = <f|B
- rayveldkamp
- · Replies 4 ·
Solve Spring Mechanics Problem with Hooke's Law - Vanchin
- vanchin
- · Replies 8 ·
How Do You Calculate the Potential of an Electric Dipole at a Distance?
- asdf1
- · Replies 10 ·
Simple Harmonic Motion of skydiver
- BDR
- · Replies 7 ·
Can You Solve These Challenging College Physics Problems?
- robbieholtz
- · Replies 2 ·
Finding the forces in equalibrium
- Ester
- · Replies 6 ·
Solving the Initial Value Problem with Euler's Method
- DivGradCurl
- · Replies 4 ·
What is the force applied by the handbrake to stop the car?
- baztack
- · Replies 11 ·
Solving the mass of the Earth using 17th and 18th Century tools
- Johnnymac
- · Replies 5 ·
Find Angle for Board Leaning on Wall w/o Friction
- Ester
- · Replies 2 ·
What is the maximum height a child reaches on a swing based on speed?
- tony873004
- · Replies 2 ·
What is the Angular Acceleration of a Free-Rotating Rod at a Specific Angle?
- rlmurra2
- · Replies 2 ·
How Is the Volume of a Sphere Calculated in Higher Dimensions?
- rocket
- · Replies 2 ·
What is a closed form and why is every closed form on U exact?
- rocket
- · Replies 2 ·
Electric field from charged filament at three distances
- cronxeh
- · Replies 3 ·
Prove Diagonals of Parallelograms Bisect w/ Vector Method
- kanki
- · Replies 5 ·
Gauss's Law and E field problem
- gravenewworld
- · Replies 2 ·
Flux linkage with sphere of radius R placed at x=x0
- Nipun
- · Replies 4 ·
How do I write a formula for a laser power curve that repeats 4 times per 360° rotation?
- SimonHollas
- · Replies 2 ·
Finding an unknown vector from a known resultant force
- relativitydude
- · Replies 8 ·
Space Shuttle SRB Operation Question.
- jeeptraveler
- · Replies 6 ·
Improve Problem Solving Skills in Year 10
- aricho
- · Replies 2 ·
How Do You Graphically Add Vectors A and B in Coordinate Plane?
- nike
- · Replies 6 ·
Torque and angular acceleration problem
- feather
- · Replies 3 ·
Difference between double and repeated integrals
- Benny
- · Replies 4 ·
Solving A * C = Y when A is not square
- cAm
- · Replies 14 ·
Physics Formulary: Printable Resource for High-School Exam
- JBS
- · Replies 2 ·
How does the EM field travel outward from a current-carrying wire?
- Dathascome
- · Replies 7 ·
Help with moment of inertia, torque, and rotational motion problems
- confused05
- · Replies 16 ·
EM Wave direction and frequency
- physics noob
- · Replies 5 ·
How Can We Prove This Combinatorial Identity?
- Pietjuh
- · Replies 2 ·
T vs MOSFET: Which one is better for current flow control?
- pmfinnegan2
- · Replies 2 ·
Proton and electron 1 meter apart with velocity-dependent medium force
- twits
- · Replies 19 ·
Why Isn't My Wavelength Calculation Correct?
- StotleD
- · Replies 3 ·
Finding the charge on the outer surface of the conductor
- mr_coffee
- · Replies 3 ·
Solving a DE Involving Derivatives of y and x
- Benny
- · Replies 20 ·
Utility companies AC instead of DC?
- pmfinnegan2
- · Replies 6 ·
Work and energy in spring, kinematics, friction, and incline problems
- mOreNa405
- · Replies 2 ·
Why is the space of complex functions infinite dimensional?
- Dathascome
- · Replies 5 ·
Constant acceleration physics problem
- Gadget
- · Replies 4 ·
Using the Fundamental Theorem of Line Integrals on 2ydx + 2xdy
- mattmns
- · Replies 4 ·
Understanding Commuting and Noncommuting Symmetries in Quantum Mechanics
- AKG
- · Replies 29 ·
Proving Matrix Symmetries of A with Inverse Matrix
- shomey
- · Replies 4 ·
Dirac delta function and electrostatic boundary conditions
- asdf1
- · Replies 2 ·
Physics Hwk Problem on Convex Mirrors
- shawonna23
- · Replies 2 ·
What is the reactance of the capacitor at 1.00 kHz?
- hotstuff
- · Replies 2 ·
Change in thermal energy with heat and work on gas
- in10sivkid
- · Replies 2 ·
Plank tipping point, muscle force, and moment of inertia of three-legged stool
- SJustice21
- · Replies 2 ·
Inelastic Collisions in One Dimension
- beatbama85
- · Replies 2 ·
How Do Electric Fields Behave in Nested Spherical Charge Distributions?
- leright
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How Does an Electron's Trajectory Change Near a Current-Carrying Wire?
- huk
- · Replies 6 ·
What is the relationship between wavelength and frequency in a stationary wave?
- hotel
- · Replies 5 ·
Substance dissolving problem (D.E.)
- Beez
- · Replies 4 ·
Physics books for a meteorologist
- nike
- · Replies 5 ·
How Do You Calculate Current in a Circuit with a Coil and Resistor in Parallel?
- Clari
- · Replies 9 ·
Calculate the forward driving force which accelerates the car down the slope.
- DeathKnight
- · Replies 3 ·
Calculate Charge on Catfish Parallel Plate Capacitor
- hotstuff
- · Replies 2 ·
By what fraction does H atom mass decrease in n=7 to n=5 transition?
- Jodi
- · Replies 6 ·
Find Minimum High h and Compression X for a Cart Going Around a Loop-the-Loop
- Aki Yamaguchi
- · Replies 5 ·
What are the Best Resources for Studying AP Physics B and C?
- sr6622
- · Replies 15 ·
Integral, an algebra problem actually
- mattmns
- · Replies 3 ·
How Long Does It Take for a Copper Sphere's Potential to Increase by 1000V?
- Hyperreality
- · Replies 3 ·
Redrawing Circuit for Equivalent Resistance Calculation
- trickae
- · Replies 3 ·
Calculating Work: Solving a Skiing Problem on a 30 Degree Slope
- ashkitten21
- · Replies 2 ·
Calculating Honeybee's Electrostatic Charge
- hotstuff
- · Replies 2 ·
Just took my midterm, can someone explain a problem I missed
- nperk7288
- · Replies 3 ·
How Does an Explosion Affect the Center of Mass in Projectile Motion?
- pez
- · Replies 1 ·
Block on floor with spring: how far does it travel before stopping?
- huskydc
- · Replies 6 ·
Solving a Physics Problem: Calculating Ambulance Speed with Sound Waves
- pippermay
- · Replies 5 ·
Finding Cv values for Hydrogen and Water at high temperatures
- ZA
- · Replies 6 ·
Levi - Civita tensor and operations with it
- Yegor
- · Replies 7 ·
MOMENTUM and IMPULSE sample problems and solutions
- plucker_08
- · Replies 2 ·
Find energy dissipated due to air friction in a thrown ball
- Gashouse
- · Replies 2 ·
What is centrifugal force and what are its equations?
- net_nubie
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Ph meter or acid/base titration?
- PhHsSuga05
- · Replies 4 ·
Finding sequences with exactly 3 heads in 10 coin tosses
- mathwurkz
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Is 2/cos(x) equal to 2sec(x)?
- Mozart
- · Replies 15 ·
Calculating the Velocity of Pin P in a Rod A-Rod B System
- MarkL
- · Replies 4 ·
What is the % efficiency of this system ?
- PhysicsNoob88
- · Replies 5 ·
Spherical coordinates angles of phi
- mugzieee
- · Replies 5 ·
Exam Problem: Rounds per minute into Megabits per second
- Ramses The Pharaoh
- · Replies 4 ·