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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Finding tensions in two strings supporting a 20 kg mass
- Mathguy197
- · Replies 5 ·
How to Calculate Coupling Coefficient Without Mutual Inductance?
- seanhbailey
- · Replies 1 ·
What is the speed of the rock right before it hits the ground?
- turtledove
- · Replies 8 ·
Electric/Gravitational Forces
- thst1003
- · Replies 5 ·
Why divide the angle by 2 in the optical lever method
- dorkenstine00
- · Replies 1 ·
How Does Angle Affect Block Acceleration?
- shock7221
- · Replies 3 ·
Circular Motion and Universal Law of Gravitation Solutions Check Requested
- rain_ex
- · Replies 1 ·
Calculating uncertainty in data.
- Encarta
- · Replies 1 ·
Calculating Forces and Acceleration Between Charged Particles
- thst1003
- · Replies 1 ·
Finding complete solutions for Ohanian/Markert Physics for Engineers
- vitaebellaa
- · Replies 6 ·
How to find distance with the given information?
- jle1092
- · Replies 1 ·
TWO Point Charges on the x-axis and an electric field graph
- danielcheung1
- · Replies 2 ·
Adiabatic, Ideal gas, changing heat capacity, work calculation
- dhoyda
- · Replies 15 ·
Gauss's Law - Cube with point charge at centre
- roman15
- · Replies 14 ·
A man strikes a 460. Hz tuning fork and moves away from you
- Student3.41
- · Replies 6 ·
How Do You Determine the Phase of Waves from a Diagram?
- jegues
- · Replies 3 ·
Finding the First Three Terms of exp(z sin z) Taylor Series
- blueyellow
- · Replies 1 ·
Change in elect. PE given work, KE, charge
- kevnm67
- · Replies 5 ·
How Does Ampere's Law Treat External Currents in Magnetic Field Calculations?
- cupid.callin
- · Replies 4 ·
Calculating Curie Constant for Iron Ammonium Alum using Curie's Law
- AStaunton
- · Replies 5 ·
How Does SUVAT Calculate Displacement and Maximum Height of a Thrown Ball?
- Peter G.
- · Replies 7 ·
Light wavelength transmitted through oil slick to water
- IKonquer
- · Replies 1 ·
What is the configuration of 3 blocks connected by a line and its balance?
- mojki1
- · Replies 4 ·
How Do You Calculate the Moment of Inertia of a Cone Using a Triple Integral?
- homad2000
- · Replies 3 ·
How Is Force Calculated to Move Connected Masses on a Frictional Surface?
- tejas
- · Replies 5 ·
Sound traveling through air/concrete
- gmmstr827
- · Replies 16 ·
Absolute Uncertainty of a Volume
- Acstars
- · Replies 1 ·
What is the instantaneous speed of a bicycle at the 5m mark during a sprint?
- drwillis
- · Replies 2 ·
How Does Resistor Configuration Affect Circuit Resistance?
- joeeykn245
- · Replies 1 ·
What Initial Speed Makes Two Balls Meet Mid-Air?
- eophysics
- · Replies 3 ·
How Do You Calculate the Resultant Force on a Charge in an Electric Field?
- thst1003
- · Replies 1 ·
Frequency of an open/closed pipe
- gmmstr827
- · Replies 1 ·
How Is Power Calculated in a Circuit with Two Batteries and Resistors?
- tomrja
- · Replies 2 ·
Why Is the Constant Speed of an Elevator Ignored in a Free Fall Calculation?
- godkills
- · Replies 3 ·
Can Normal Force Actually Perform Work on an Object?
- Ahalp
- · Replies 10 ·
Math Physics: Lagrange Multiplier question
- randomperson8
- · Replies 1 ·
Find the Root-Mean-Square of the gas
- VitaX
- · Replies 6 ·
Finding F2 when F1 and net acceleration are known
- NeverSummer
- · Replies 4 ·
Calculating Velocity of a Car Rolling Off a Cliff
- loganblacke
- · Replies 4 ·
What Are the Differences Between Ferrous and Non-Ferrous Magnets?
- Stevay
- · Replies 3 ·
Mutual Inductance with Pulsating Current
- seanhbailey
- · Replies 9 ·
Problems about Electricity and Magnetism
- SPAMSPAMSPAM
- · Replies 7 ·
Human cannonball projectile range problem
- boringbum
- · Replies 3 ·
How long does it take for the angle of the javelin to change from 35 to 20?
- Ohoneo
- · Replies 5 ·
Electric Potential of Two Positive Charges at Point A on y-Axis
- lcam2
- · Replies 2 ·
Tension Between Objects in 1 Dimension
- Versaiteis
- · Replies 7 ·
Vectors: Finding Magnitude and Angle
- tensirk
- · Replies 3 ·
Which lens works best for projecting 60mm film onto a 9m screen 27m away
- baileya
- · Replies 10 ·
Blocks on pulley on incline plane
- Staerke
- · Replies 3 ·
Thermal conductivity through a concrete wall
- Xyius
- · Replies 5 ·
Diffraction grating angles for 520 nm and 630 nm light
- AClass
- · Replies 1 ·
Finding Electric Field due to hemispherical charge distribution
- S[e^x]=f(u)^n
- · Replies 3 ·
Designing an RC Circuit for RL Equivalent Voltage vs. Time
- dancergirlie
- · Replies 1 ·
How Do You Calculate the Time a Marble Takes to Travel from L to P?
- BraindeadX64
- · Replies 2 ·
Quick q on gauss' law (cylinders)
- channel1
- · Replies 2 ·
Effect of light and sound to opaque object
- songoku
- · Replies 3 ·
Equilibrium problem missing 2 problems
- internexus
- · Replies 1 ·
Finding pressure when fundamental frequency equals third harmonic in a tube with mercury
- 3ephemeralwnd
- · Replies 1 ·
Net Flux through a sphere (Gauss's Law)
- Alex G
- · Replies 9 ·
Governing Equations: Force on Damper w/ Damping Constant D
- abhishek ghos
- · Replies 2 ·
Does a car at rest after stopping have motion or distance?
- godkills
- · Replies 8 ·
Electric Point Forces in a Circle
- toosha88
- · Replies 3 ·
Does a rolling disk go higher with or without friction on an incline?
- joej24
- · Replies 10 ·
Thermodynamics problem- isobaric process
- mrdith007
- · Replies 1 ·
Relative Motion - What is your thought process?
- 03125
- · Replies 2 ·
Final Temperature of System with Ice Added
- mopar969
- · Replies 8 ·
What Is the Acceleration of Masses on a Frictionless Tabletop with Hanging Mass?
- Marioqwe
- · Replies 3 ·
Calculating Moment of Force Produced at Point A
- musicmar
- · Replies 2 ·
How Do You Calculate Force Output and Total Pressure in a Stacked Ball Setup?
- WehrdScience
- · Replies 3 ·
Electric Current - Parallel and Series equations
- unilliterate
- · Replies 3 ·
Current divider rule for parallel resistors with unknown R
- jti3066
- · Replies 2 ·
Finding currents in a five-resistor bridge circuit
- jess_vander
- · Replies 2 ·
Calculate Energy of System: Electron Gun, KE, Force, Acceleration, Time
- SpecialOps0
- · Replies 1 ·
Major Project on Physics of the Heart and Cardiovascular System
- lindsaykate
- · Replies 1 ·
What Is the Effective Temperature in a Population Inversion Scenario?
- bon
- · Replies 2 ·
How should a bird adjust its direction to fly north in a crosswind?
- Peter G.
- · Replies 3 ·
Critiquing velocity and acceleration graphs from hand position data
- zdickz
- · Replies 1 ·
Multiple choice questions on current
- cupid.callin
- · Replies 1 ·
De-acceleration of cars in wreck
- mljoslinak
- · Replies 2 ·
Determining the sign of Work in Electric Problems
- CaneAA
- · Replies 2 ·
Force Needed to Push a Box on an Inclined Plane
- Tastosis
- · Replies 14 ·
Baseball and Average Force Question
- kliang1234
- · Replies 5 ·
Solve Otto Cycle Problem: Max Pressure Lambo Murcielago w/r=11.0
- NavalChicken
- · Replies 2 ·
Charge change when Teflon fills a parallel plate capacitor
- ryan8642
- · Replies 3 ·
Calculate distance between two planets in elliptical orbits
- emilinus
- · Replies 17 ·
Finding acceleration from the last 100m of a 200m drop
- JohnDoeJD
- · Replies 7 ·
Electron moving in electric field
- cupid.callin
- · Replies 13 ·
Electric Fields & Potentials: A Point Charge Surrounded by a Spherical Shell
- awelex
- · Replies 14 ·
Design RC Circuit for V vs Time Characteristics
- dancergirlie
- · Replies 12 ·
Optimizing a Free Throw: Solving for Initial Speed and Angle
- Metaphysiks
- · Replies 1 ·
Graph Vout vs Time for RC Circuit Switch Closure
- dancergirlie
- · Replies 7 ·
How to Solve an Energy Change Equation Involving Temperature?
- mopar969
- · Replies 1 ·
Lens: object distance vs. image distance?
- Seadragon
- · Replies 3 ·
Finding Frequency for Rolling Motion of Sphere in Spherical Bowl
- NotMrX
- · Replies 13 ·
Electromagnetic and the weak force
- BieberFever!
- · Replies 1 ·
Damped oscillations in a vacuum chamber
- JJBladester
- · Replies 2 ·
The Relationship Between Length and Frequency in a Simple Pendulum
- marine192
- · Replies 1 ·
Relativistic Momentum and Kinetic Energy
- erok81
- · Replies 2 ·
Why Does Using W=QV Give the Wrong Answer for Work Done in Charging a Capacitor?
- CaneAA
- · Replies 2 ·