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 Light Behave When Passing Through Multiple Lenses?
- leolaw
- · Replies 10 ·
Ray diagram for 1-cm arrow 2 cm from 7-cm focal-length lens
- GingerBread27
- · Replies 4 ·
Bounds of g(t) = 2sin(t) + cos(2t) and complex equation solutions
- Danielll
- · Replies 2 ·
Ft = m*a = 3 kg * (9.81*26/1.5) = 441.13 N
- Naeem
- · Replies 2 ·
When did Einstein move to America?
- smeagol72087
- · Replies 2 ·
Help with 4 torque questions from a lab
- laker_gurl3
- · Replies 28 ·
Converting hydrated manganese nitrate and calcium acetate
- ~angel~
- · Replies 4 ·
Does circular motion affect different points on a car's wheels differently?
- SemperFiKandJ
- · Replies 14 ·
How Is the Period of a Pendulum Affected by Inertia and Center of Mass?
- stunner5000pt
- · Replies 10 ·
Calculating Interference Pattern Intensity for Double-Slit Experiment
- Honda47
- · Replies 3 ·
Mirror formula problems with concave and convex mirrors
- Kdawg
- · Replies 2 ·
How Does Changing Magnetic Flux Induce EMF?
- Femme06Fatale
- · Replies 2 ·
Square aluminum loop falling through a magnetic field boundary
- AKG
- · Replies 1 ·
Probability Density of x-Coordinate in Needle Movement
- cyberdeathreaper
- · Replies 5 ·
Find The Equation Of A Cubic Relationship Given This Data
- drunkenfool
- · Replies 10 ·
Two-Dimensional Kinematics, Projectile
- Naeem
- · Replies 2 ·
Rocket Car Acceleration: Solving for a0 with Latest Materials and Technology
- ProBasket
- · Replies 1 ·
Statics/rotational dynamics:hanging sign
- LoN
- · Replies 2 ·
Dual sensitivity problem involving transducer (ECE)
- vptran84
- · Replies 2 ·
How Far Must You Be from a Tornado Siren for a 15 dB Decrease in Sound?
- Jayhawk1
- · Replies 3 ·
Three forces acting on object, find net force
- Naeem
- · Replies 1 ·
Question regarding the d Orbitals
- mathzeroh
- · Replies 11 ·
Physics Problem - Total Heat Loss in a House w/60 People
- JoshHull
- · Replies 2 ·
Designing a Bungee Ride: Calculating Energy & Springs
- audi476
- · Replies 1 ·
Find the mass of the meter stick
- med9546
- · Replies 2 ·
Rescue boat reaching child in river with current
- Naeem
- · Replies 2 ·
Baseball: finding trajectory of ball
- Naeem
- · Replies 2 ·
Why is the area of a cross section not pi * r^2 for a rod?
- ktpr2
- · Replies 2 ·
Circular Motion: Solving for Tension and Speed of a Bead on a String
- flower76
- · Replies 3 ·
Help with homework problems from worksheet image
- wundumbbutt
- · Replies 6 ·
For what values of x is │x^2-4│ not differentiable?
- gillgill
- · Replies 2 ·
What Is the Coefficient of Kinetic Friction for a Block on an Incline?
- insertnamehere
- · Replies 2 ·
Solving Rope Length with Changing Mass Problem
- shraps
- · Replies 4 ·
Calculating the Period of Oscillations of a Homogenous Disc
- stunner5000pt
- · Replies 3 ·
Line Integrals (I'm missing something here)
- FrogPad
- · Replies 15 ·
Resistance Questions: Car Battery, Starter Motor, Headlamps
- T7
- · Replies 2 ·
Numerical riddle 2+2=44+4=8 142+468=621 3762+8271=?
- LakeMountD
- · Replies 10 ·
Why Does 3762 + 8271 Equal What It Does?
- bblueblob
- · Replies 3 ·
Finding Net Torque in Cable Car Turnaround
- cavery4
- · Replies 3 ·
SAT II Physics Practice Questions: Force and Energy Concepts
- Nimmy
- · Replies 2 ·
Geometric progression: first term 12, fourth term -3/2
- misogynisticfeminist
- · Replies 4 ·
Why does my quarter-mile calculation give 124 hp instead of my car's rated 103 hp?
- whozum
- · Replies 15 ·
Expert Help with Integration: Understanding the Area Under a Graph
- liz
- · Replies 13 ·
Calculus Max. and Min. Question
- laker_gurl3
- · Replies 3 ·
Intensely Loud Question~H/w check
- SwAnK
- · Replies 2 ·
Find the vector and cartesian equations of a plane
- ~angel~
- · Replies 2 ·
Derivate of geometrical product
- Raparicio
- · Replies 4 ·
Rotational motion about a fixed axis
- cavery4
- · Replies 2 ·
Calculating Total Current in Cylindrical Wire at 60 Hz
- AC
- · Replies 2 ·
How Do You Calculate Electron Speed and Particle Charge in Physics Problems?
- bybliz
- · Replies 4 ·
PROBLEM -> Amount of Extension of Spring
- IntellectIsStrength
- · Replies 3 ·
Having problems with a thermo. cycle
- flythisforme
- · Replies 2 ·
Uncertainties/error propogation
- ElectricMile
- · Replies 2 ·
Calculating Work Done to Move Arm from Position 1 to 2
- Haroon Pasha
- · Replies 4 ·
Efficiency of refrigerator unit
- confused1
- · Replies 2 ·
Fourier series of two isolated pulses with width w spaced at ±D
- AntonVrba
- · Replies 4 ·
How Do You Calculate the Final Concentration of a Mixed HCl Solution?
- mugzieee
- · Replies 2 ·
Definition of mutual inductance formula L_12
- Lomion
- · Replies 2 ·
How Do You Find the First Term in the nth Bracket of This Number Sequence?
- misogynisticfeminist
- · Replies 2 ·
Solving System of Linear Equations: Where is the Mistake?
- Nylex
- · Replies 3 ·
Calculate Gravitational Self-Energy of the Sun
- stunner5000pt
- · Replies 6 ·
Ampere's Law: Constant Magnetic Field b/w Non-Coaxial Cylinders
- Merrank
- · Replies 2 ·
Advice for the Euclid math contest
- MiniTank
- · Replies 8 ·
Does convex mirror magnification depend on object distance?
- Soaring Crane
- · Replies 3 ·
Heat and work per unit mass in a Brayton cycle with helium
- sportsrules
- · Replies 2 ·
Dimensions of an ellipse region a dog wanders
- aisha
- · Replies 7 ·
How does light travel through a vacuum without a medium?
- !Live_4Ever!
- · Replies 10 ·
Is {a_n} Bounded Above by 3 in Calculus?
- JasonRox
- · Replies 2 ·
Tennis ball dropped from 3.6 m: finding impact force and contact time
- Naeem
- · Replies 7 ·
Work done by air resistance on a dropped volleyball without mass
- Terrance
- · Replies 10 ·
Solving Thermodynamics Problems with Helium
- sportsrules
- · Replies 2 ·
Force needed to lift a concrete block out of water given only the lifting force in water
- srfrgrl727
- · Replies 3 ·
Why does gravity do no work on a bowling ball rolling along an alley?
- rwh
- · Replies 5 ·
Why V-engines Are Better Than In Line Engines?
- SHIVA SHANKAR.D
- · Replies 2 ·
Metal bar sliding down inclined rails in magnetic field
- Giuseppe
- · Replies 2 ·
Magnetic Reluctance: Correct Equation
- confusion321
- · Replies 2 ·
What is the Relationship Between Force, Power, and Work in a Particle System?
- sAXIn
- · Replies 5 ·
Multiple choice ? on center of mass
- srhly
- · Replies 2 ·
What Are the Requirements for Part B?
- Logistics
- · Replies 2 ·
How to Solve for CosA and T in a Conical Pendulum?
- sAXIn
- · Replies 2 ·
Physics B AP test advice
- jjjsarnis
- · Replies 4 ·
Designing a toy rocket to be launched by a spring
- ProBasket
- · Replies 2 ·
Solving the Pushy Astronaut Puzzle: Newton's Third Law
- Naeem
- · Replies 4 ·
At What Depth in Fresh Water Is the Density 1% Greater Than at the Surface?
- srfrgrl727
- · Replies 3 ·
Are x² + x + 2, x² - 3x + 1, and 5x² - 7x + 7 linearly dependent?
- Naeem
- · Replies 3 ·
Are These Functions Linearly Independent?
- Naeem
- · Replies 3 ·
Find the lowest frequency where the receiver is a node
- Physicsisfun2005
- · Replies 2 ·
Solving a Physics Problem: Finding the Right Units
- ProBasket
- · Replies 2 ·
Calculating the Amount of Ice Needed to Reach a Specific Temperature in Water
- Logistics
- · Replies 5 ·
Calculate Volume of Enclosed Region with Cylindrical Coordinates
- Imo
- · Replies 3 ·
Carnot refrigerator and work done
- sportsrules
- · Replies 2 ·
How Do You Find Negative Eigenvalues in Quantum Mechanics?
- skpang82
- · Replies 2 ·
Order of a differential equation refers to highest derivative, not function degree
- tandoorichicken
- · Replies 4 ·
Integration by parts for x sin(2x)
- UrbanXrisis
- · Replies 25 ·
Finding Heat Flow in a Brayton Cycle for Helium
- sportsrules
- · Replies 2 ·
Total internal reflection in optic fiber with index > 1.42
- leolaw
- · Replies 12 ·
Solving the Force of Reverse Thrust on Mars' Polar Lander
- Nx2
- · Replies 4 ·
How Does Electromagnetic Induction Power a Bicycle Generator?
- Quantum Cat
- · Replies 1 ·
Solving Torque and Power Problems with Drywall and Rotating Platforms
- squib
- · Replies 13 ·
Area of Polar Curve Region: Finding the Error
- ILoveBaseball
- · Replies 2 ·