Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Solving √2 sin θ = √3 - cos θ for 0 < θ < 2π
- aisha
- · Replies 12 ·
Solve Traffic Accident: Who Was Lying?
- mohlam12
- · Replies 4 ·
What is the Velocity Ratio in an Elastic Collision?
- lookitzcathy
- · Replies 4 ·
Derivative of ln(cos(w-1))
- dec1ble
- · Replies 2 ·
Change of Momentum in Motion - Find J (Impulse)
- hotmail590
- · Replies 2 ·
Finding current through R2 when R1 carries 9 A
- nobb
- · Replies 7 ·
How Does Gauss's Law Calculate Charge on a Cylindrical Shell?
- qwerty123
- · Replies 4 ·
Determine the speed of the smaller mass
- Gughanath
- · Replies 2 ·
What does isoelectronic mean and how to identify it?
- courtrigrad
- · Replies 4 ·
Calculating Rocket Acceleration from Liftoff
- jenduncan
- · Replies 2 ·
Wire Loop in Equilibrium-Angle?
- GingerBread27
- · Replies 2 ·
Finding centripetal force for a roller coaster on a horizontal curve
- shorti2406
- · Replies 7 ·
Does current stay reduced after passing through a resistor?
- dayrinni
- · Replies 2 ·
Checking FTC integral calculations with substitution
- courtrigrad
- · Replies 9 ·
Why would a HCl molecule have a dipole moment?
- courtrigrad
- · Replies 2 ·
Instrumentation Amplifier question
- cyeokpeng
- · Replies 2 ·
Centre of mass speed and composite mass in relativistic collisions
- mike217
- · Replies 2 ·
Quadratic forms, linear algebra
- matrix_204
- · Replies 3 ·
What Energy Causes Motion in a Suspended Sphere Apparatus?
- evthis
- · Replies 6 ·
Equation is a parabola with a vertical axis of symmetry
- gillgill
- · Replies 2 ·
How do you calculate force on a mass swung along an arc on a string?
- Padj01
- · Replies 3 ·
Electric Potential at Cylinder Center: Calculating Error
- brichugh
- · Replies 2 ·
Look for a value of delta limit
- Benny
- · Replies 4 ·
Corner reflector reflecting light back parallel to incidence
- shaiqbashir
- · Replies 2 ·
Weight decrease of 1% at 45° latitude with elevation
- shaiqbashir
- · Replies 6 ·
NBA Salary Growth: Solving for Average Salary and Future Projections
- courtrigrad
- · Replies 7 ·
Solving Equations of Motion: When Will 100g Mass Overtake 1.5kg Shot Put?
- ][nstigator
- · Replies 2 ·
Example of only a single force occurence?
- llamaboy
- · Replies 2 ·
Anti Parallel Currents and Magnetic Field
- GingerBread27
- · Replies 2 ·
Proving Invariance of Polynomial Size Measurement for Positive n
- msmith12
- · Replies 2 ·
Build a Mousetrap Car for 5 Degree Incline - 14m Goal
- suesand
- · Replies 3 ·
Finding fuel mass to change rocket course by 24.8 degrees
- whereisccguys
- · Replies 4 ·
How Do You Calculate the Center of Mass of a Parabolic Plate?
- whereisccguys
- · Replies 3 ·
Momentum and Breaking force of car
- vitaly
- · Replies 2 ·
What Forces Keep Objects in Circular Motion?
- mark9159
- · Replies 2 ·
Right hand Rule - Check if i did this right
- Jacob87411
- · Replies 3 ·
How Much Does the Spring Compress When an Elevator Falls on It?
- whereisccguys
- · Replies 2 ·
Electric field needed to dissociate N_2 molecules
- quasar987
- · Replies 17 ·
Finding the tension of a string
- UrbanXrisis
- · Replies 5 ·
How does a Van de Graaff generator work?
- Femme06Fatale
- · Replies 2 ·
How Do You Calculate the Mass of a Rod with Non-Uniform Density?
- AstroturfHead
- · Replies 3 ·
Three common magnetism problems
- Kadomony
- · Replies 3 ·
How do you find a normal of a direction vector in 3 space?
- thomasrules
- · Replies 3 ·
Integrating an expression with a square root of a quadratic
- Sombra
- · Replies 4 ·
Calculating Force and Acceleration Vectors
- flower76
- · Replies 5 ·
What fraction of light is reflected from the air water interface?
- stunner5000pt
- · Replies 6 ·
Car braking from 25 m/s with 3.0 m/s² deceleration
- Power24
- · Replies 16 ·
Answer:Work-Energy Scaling: R_k,R_w = 3,1
- ProBasket
- · Replies 2 ·
Work and Kinetic Energy of a sled
- ProBasket
- · Replies 2 ·
How Many Revolutions Does a Proton Complete in a Cyclotron?
- andrew410
- · Replies 3 ·
What are the critical numbers for g(x) = x^2 + 2x^(2/3) on [-2,2]?
- jzq
- · Replies 16 ·
How Do You Solve This Equation?
- faramir12345
- · Replies 7 ·
Struggling with a Metric Space Problem: Show A is Closed
- mansi
- · Replies 2 ·
Force between 100g and 50g masses pushed with 1N applied force
- harhar
- · Replies 32 ·
What Software Can Create Smooth d/t and v/a Graphs with Tangents?
- Nx2
- · Replies 6 ·
Calculate Torque Exerted by Fish at 20° Angle
- UrbanXrisis
- · Replies 7 ·
Calculate Speed of Ambulance with Sound in Air Problem
- Eclypse
- · Replies 2 ·
How Do Quantum Mechanics Handle Particles at Potential Steps with E<V_0?
- relinquished™
- · Replies 9 ·
Bifurcation Diagrams: How to Plot Stability
- matpo39
- · Replies 2 ·
Is Simpson or Trapezium Rule Better for Calculating Area Under a Curve?
- Link
- · Replies 6 ·
What is the equilibrium position of a ball attached to two springs?
- tony873004
- · Replies 2 ·
What is the maximum angle for a bob to slide upwards in a rotating funnel?
- stunner5000pt
- · Replies 2 ·
2 Questions on Ohm's Law and Power
- Lovely
- · Replies 3 ·
Use a GEOCENTRIC reference frame to explain the earth's orbit
- stunner5000pt
- · Replies 3 ·
How Do You Design a Circuit for a Triple-Scale Voltmeter?
- ericamandi16
- · Replies 2 ·
20x20 square puzzle with cycling numbers and 10x10 zero region
- C Squiz
- · Replies 4 ·
Cross sectional area of cylinder?
- ElectricMile
- · Replies 3 ·
Centripetal/angular acceleration
- UrbanXrisis
- · Replies 10 ·
Why does an elevator scale read the normal force, not net force?
- tony873004
- · Replies 7 ·
Proving the BAC CAB rule for vector triple products
- shaiqbashir
- · Replies 6 ·
How to Find the Displacement and Angle of a Drifting Balloon?
- shaiqbashir
- · Replies 3 ·
Calculating Zn Required for 2.00g of Au in Chemical Reaction
- gokugreene
- · Replies 2 ·
Finding Distance b/w Point A and B with Kinematic Formulas
- lektor
- · Replies 3 ·
A heat engine and determining Power
- JasonL
- · Replies 3 ·
Does 0.999 Equal 1? Maths Project
- chickenguy
- · Replies 3 ·
Physics of sailing project ideas for grade 11
- villiami
- · Replies 2 ·
What is the voltage across each capacitor in this circuit?
- thisisfudd
- · Replies 4 ·
Find the Derivative of a Quadratic Function with f(0)=-4 and Evaluate f'(0)
- ProBasket
- · Replies 2 ·
Energy required to ionize a hydrogen atom from n=1
- tony873004
- · Replies 2 ·
Calculating Plane Height from Radio Wave Interference
- lektor
- · Replies 2 ·
What is the center of mass of a lamina with variable density?
- tandoorichicken
- · Replies 3 ·
What Determines the Maximum Angular Velocity for a Coin on a Turntable?
- cstryker02
- · Replies 2 ·
Confusion with Electric Potential/Potential Energy
- sisigsarap
- · Replies 2 ·
Moment of Inertia: Easier Way to Determine Formula
- Tabe
- · Replies 4 ·
How Far Does the Diver Travel from Board to Stopping Point Underwater?
- jojo42586
- · Replies 2 ·
Volume under z = 2x + y² bounded by x = y² and x = y³
- tandoorichicken
- · Replies 11 ·
Power loss in electricity transmission at 12,000V vs 50,000V
- leolaw
- · Replies 4 ·
Confusing Physics Question: How Far Will a Car Travel Before Overtaking a Truck?
- jen333
- · Replies 3 ·
2 mp problems that I sorta understnad but dont?
- RhysticGenesis
- · Replies 5 ·
Boat moves 0.7m when Juliet walks across it—how does that work?
- Satoy
- · Replies 5 ·
Solving 5sinθ + 2√3 = √3 + 3sinθ for θ
- aisha
- · Replies 2 ·
Impulse and work done by a tennis racquet on a 0.06 kg ball
- Satoy
- · Replies 8 ·
Force when 2 blocks pushing against each other
- adrian783
- · Replies 4 ·
Projectile Motion: Designing a Launching Device for Basketball Hoop
- Physics_wiz
- · Replies 3 ·
Angular Acceleration of Rotating Object: $\frac{\pi}{8}$
- UrbanXrisis
- · Replies 2 ·
Why did the cotton ball insulated cup freeze the slowest?
- TooManyHours
- · Replies 5 ·
Spring work and velocity with friction and frictionless surfaces
- Hadou
- · Replies 2 ·
Method and circuit for an NTC thermistor experiment
- Noj
- · Replies 3 ·
How Much Heat Must Be Removed to Make 3.1 kg of Shaved Ice at 0°C?
- jmandas
- · Replies 2 ·
Currents and resistors and series and parallel you get the idea
- thisisfudd
- · Replies 18 ·